1 /* C Compatible Compiler Preprocessor (CCCP)
2 Copyright (C) 1986, 87, 89, 92, 93, 94, 1995 Free Software Foundation, Inc.
3 Written by Paul Rubin, June 1986
4 Adapted to ANSI C, Richard Stallman, Jan 1987
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
20 In other words, you are welcome to use, share and improve this program.
21 You are forbidden to forbid anyone else to use, share and improve
22 what you give them. Help stamp out software-hoarding! */
24 typedef unsigned char U_CHAR;
28 #include "../src/config.h"
36 /* The macro EMACS is defined when cpp is distributed as part of Emacs,
37 for the sake of machines with limited C compilers. */
40 #endif /* not EMACS */
42 #ifndef STANDARD_INCLUDE_DIR
43 #define STANDARD_INCLUDE_DIR "/usr/include"
46 #ifndef LOCAL_INCLUDE_DIR
47 #define LOCAL_INCLUDE_DIR "/usr/local/include"
50 #if 0 /* We can't get ptrdiff_t, so I arranged not to need PTR_INT_TYPE. */
52 #define PTR_INT_TYPE ptrdiff_t
54 #define PTR_INT_TYPE long
60 /* By default, colon separates directories in a path. */
61 #ifndef PATH_SEPARATOR
62 #define PATH_SEPARATOR ':'
65 /* In case config.h defines these. */
70 #include <sys/types.h>
78 #include <sys/time.h> /* for __DATE__ and __TIME__ */
79 #include <sys/resource.h>
86 /* This defines "errno" properly for VMS, and gives us EACCES. */
89 /* VMS-specific definitions */
93 #define O_RDONLY 0 /* Open arg for Read/Only */
94 #define O_WRONLY 1 /* Open arg for Write/Only */
95 #define read(fd,buf,size) VMS_read (fd,buf,size)
96 #define write(fd,buf,size) VMS_write (fd,buf,size)
97 #define open(fname,mode,prot) VMS_open (fname,mode,prot)
98 #define fopen(fname,mode) VMS_fopen (fname,mode)
99 #define freopen(fname,mode,ofile) VMS_freopen (fname,mode,ofile)
100 #define strncat(dst,src,cnt) VMS_strncat (dst,src,cnt)
101 static char * VMS_strncat ();
102 static int VMS_read ();
103 static int VMS_write ();
104 static int VMS_open ();
105 static FILE * VMS_fopen ();
106 static FILE * VMS_freopen ();
107 static void hack_vms_include_specification ();
108 typedef struct { unsigned :16, :16, :16; } vms_ino_t;
109 #define ino_t vms_ino_t
110 #define INCLUDE_LEN_FUDGE 10 /* leave room for VMS syntax conversion */
112 #define BSTRING /* VMS/GCC supplies the bstring routines */
113 #endif /* __GNUC__ */
116 extern char *index ();
117 extern char *rindex ();
125 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
126 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
128 /* Find the largest host integer type and set its size and type. */
130 #ifndef HOST_BITS_PER_WIDE_INT
132 #if HOST_BITS_PER_LONG > HOST_BITS_PER_INT
133 #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONG
134 #define HOST_WIDE_INT long
136 #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_INT
137 #define HOST_WIDE_INT int
143 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
147 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
150 /* Define a generic NULL if one hasn't already been defined. */
157 #if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
158 #define GENERIC_PTR void *
160 #define GENERIC_PTR char *
165 #define NULL_PTR ((GENERIC_PTR)0)
168 #ifndef INCLUDE_LEN_FUDGE
169 #define INCLUDE_LEN_FUDGE 0
172 /* Forward declarations. */
178 /* External declarations. */
180 extern char *getenv ();
181 extern FILE *fdopen ();
182 extern char *version_string;
183 extern struct tm *localtime ();
185 #ifndef HAVE_STRERROR
188 extern const char *const sys_errlist[];
190 extern char *sys_errlist[];
192 #else /* HAVE_STERRROR */
196 char *strerror (int,...);
198 extern int parse_escape ();
199 extern HOST_WIDE_INT parse_c_expression ();
205 /* Forward declarations. */
212 #if defined(USG) || defined(VMS)
220 /* These functions are declared to return int instead of void since they
221 are going to be placed in a table and some old compilers have trouble with
222 pointers to functions returning void. */
224 static int do_define ();
225 static int do_line ();
226 static int do_include ();
227 static int do_undef ();
228 static int do_error ();
229 static int do_pragma ();
230 static int do_ident ();
232 static int do_xifdef ();
233 static int do_else ();
234 static int do_elif ();
235 static int do_endif ();
236 static int do_sccs ();
237 static int do_once ();
238 static int do_assert ();
239 static int do_unassert ();
240 static int do_warning ();
242 static void add_import ();
243 static void append_include_chain ();
244 static void deps_output ();
245 static void make_undef ();
246 static void make_definition ();
247 static void make_assertion ();
248 static void path_include ();
249 static void initialize_builtins ();
250 static void initialize_char_syntax ();
251 static void dump_arg_n ();
252 static void dump_defn_1 ();
253 static void delete_macro ();
254 static void trigraph_pcp ();
255 static void rescan ();
256 static void finclude ();
257 static void validate_else ();
258 static int comp_def_part ();
259 static void error_from_errno ();
260 static void error_with_line ();
262 void pedwarn_with_line ();
263 static void pedwarn_with_file_and_line ();
264 static void fatal ();
266 static void pfatal_with_name ();
267 static void perror_with_name ();
268 static void pipe_closed ();
269 static void print_containing_files ();
270 static int lookup_import ();
271 static int redundant_include_p ();
272 static is_system_include ();
273 static struct file_name_map *read_name_map ();
274 static char *read_filename_string ();
275 static int open_include_file ();
276 static int check_preconditions ();
277 static void pcfinclude ();
278 static void pcstring_used ();
279 static void write_output ();
280 static int check_macro_name ();
281 static int compare_defs ();
282 static int compare_token_lists ();
283 static HOST_WIDE_INT eval_if_expression ();
284 static int discard_comments ();
285 static int change_newlines ();
286 static int line_for_error ();
288 static int file_size_and_mode ();
290 static struct arglist *read_token_list ();
291 static void free_token_list ();
293 static struct hashnode *install ();
294 struct hashnode *lookup ();
296 static struct assertion_hashnode *assertion_install ();
297 static struct assertion_hashnode *assertion_lookup ();
299 static char *xrealloc ();
300 static char *xcalloc ();
301 static char *savestring ();
303 static void delete_assertion ();
304 static void macroexpand ();
305 static void dump_all_macros ();
306 static void conditional_skip ();
307 static void skip_if_group ();
308 static void output_line_command ();
310 /* Last arg to output_line_command. */
311 enum file_change_code {same_file, enter_file, leave_file};
313 static int grow_outbuf ();
314 static int handle_directive ();
315 static void memory_full ();
317 static U_CHAR *macarg1 ();
318 static char *macarg ();
320 static U_CHAR *skip_to_end_of_comment ();
321 static U_CHAR *skip_quoted_string ();
322 static U_CHAR *skip_paren_group ();
323 static char *quote_string ();
325 static char *check_precompiled ();
326 /* static struct macrodef create_definition (); [moved below] */
327 static void dump_single_macro ();
328 static void output_dots ();
330 #ifndef FAILURE_EXIT_CODE
331 #define FAILURE_EXIT_CODE 33 /* gnu cc command understands this */
334 #ifndef SUCCESS_EXIT_CODE
335 #define SUCCESS_EXIT_CODE 0 /* 0 means success on Unix. */
338 /* Name under which this program was invoked. */
340 static char *progname;
342 /* Nonzero means use extra default include directories for C++. */
344 static int cplusplus;
346 /* Nonzero means handle cplusplus style comments */
348 static int cplusplus_comments;
350 /* Nonzero means handle #import, for objective C. */
354 /* Nonzero means this is an assembly file, and allow
355 unknown directives, which could be comments. */
359 /* Current maximum length of directory names in the search path
360 for include files. (Altered as we get more of them.) */
362 static int max_include_len;
364 /* Nonzero means turn NOTREACHED into #pragma NOTREACHED etc */
366 static int for_lint = 0;
368 /* Nonzero means copy comments into the output file. */
370 static int put_out_comments = 0;
372 /* Nonzero means don't process the ANSI trigraph sequences. */
374 static int no_trigraphs = 0;
376 /* Nonzero means print the names of included files rather than
377 the preprocessed output. 1 means just the #include "...",
378 2 means #include <...> as well. */
380 static int print_deps = 0;
382 /* Nonzero if missing .h files in -M output are assumed to be generated
383 files and not errors. */
385 static int print_deps_missing_files = 0;
387 /* Nonzero means print names of header files (-H). */
389 static int print_include_names = 0;
391 /* Nonzero means don't output line number information. */
393 static int no_line_commands;
395 /* Nonzero means output the text in failing conditionals,
396 inside #failed ... #endfailed. */
398 static int output_conditionals;
400 /* dump_only means inhibit output of the preprocessed text
401 and instead output the definitions of all user-defined
402 macros in a form suitable for use as input to cccp.
403 dump_names means pass #define and the macro name through to output.
404 dump_definitions means pass the whole definition (plus #define) through
407 static enum {dump_none, dump_only, dump_names, dump_definitions}
408 dump_macros = dump_none;
410 /* Nonzero means pass all #define and #undef directives which we actually
411 process through to the output stream. This feature is used primarily
412 to allow cc1 to record the #defines and #undefs for the sake of
413 debuggers which understand about preprocessor macros, but it may
414 also be useful with -E to figure out how symbols are defined, and
415 where they are defined. */
416 static int debug_output = 0;
418 /* Nonzero indicates special processing used by the pcp program. The
419 special effects of this mode are:
421 Inhibit all macro expansion, except those inside #if directives.
423 Process #define directives normally, and output their contents
426 Output preconditions to pcp_outfile indicating all the relevant
427 preconditions for use of this file in a later cpp run.
429 static FILE *pcp_outfile;
431 /* Nonzero means we are inside an IF during a -pcp run. In this mode
432 macro expansion is done, and preconditions are output for all macro
433 uses requiring them. */
434 static int pcp_inside_if;
436 /* Nonzero means never to include precompiled files.
437 This is 1 since there's no way now to make precompiled files,
438 so it's not worth testing for them. */
439 static int no_precomp = 1;
441 /* Nonzero means give all the error messages the ANSI standard requires. */
445 /* Nonzero means try to make failure to fit ANSI C an error. */
447 static int pedantic_errors;
449 /* Nonzero means don't print warning messages. -w. */
451 static int inhibit_warnings = 0;
453 /* Nonzero means warn if slash-star appears in a comment. */
455 static int warn_comments;
457 /* Nonzero means warn if a macro argument is (or would be)
458 stringified with -traditional. */
460 static int warn_stringify;
462 /* Nonzero means warn if there are any trigraphs. */
464 static int warn_trigraphs;
466 /* Nonzero means warn if #import is used. */
468 static int warn_import = 1;
470 /* Nonzero means turn warnings into errors. */
472 static int warnings_are_errors;
474 /* Nonzero means try to imitate old fashioned non-ANSI preprocessor. */
478 /* Nonzero causes output not to be done,
479 but directives such as #define that have side effects
482 static int no_output;
484 /* Nonzero means this file was included with a -imacros or -include
485 command line and should not be recorded as an include file. */
487 static int no_record_file;
489 /* Nonzero means that we have finished processing the command line options.
490 This flag is used to decide whether or not to issue certain errors
493 static int done_initializing = 0;
495 /* Line where a newline was first seen in a string constant. */
497 static int multiline_string_line = 0;
499 /* I/O buffer structure.
500 The `fname' field is nonzero for source files and #include files
501 and for the dummy text used for -D and -U.
502 It is zero for rescanning results of macro expansion
503 and for expanding macro arguments. */
504 #define INPUT_STACK_MAX 400
505 static struct file_buf {
507 /* Filename specified with #line command. */
509 /* Record where in the search path this file was found.
510 For #include_next. */
511 struct file_name_list *dir;
516 /* Macro that this level is the expansion of.
517 Included so that we can reenable the macro
518 at the end of this level. */
519 struct hashnode *macro;
520 /* Value of if_stack at start of this file.
521 Used to prohibit unmatched #endif (etc) in an include file. */
522 struct if_stack *if_stack;
523 /* Object to be freed at end of input at this level. */
525 /* True if this is a header file included using <FILENAME>. */
526 char system_header_p;
527 } instack[INPUT_STACK_MAX];
529 static int last_error_tick; /* Incremented each time we print it. */
530 static int input_file_stack_tick; /* Incremented when the status changes. */
532 /* Current nesting level of input sources.
533 `instack[indepth]' is the level currently being read. */
534 static int indepth = -1;
535 #define CHECK_DEPTH(code) \
536 if (indepth >= (INPUT_STACK_MAX - 1)) \
538 error_with_line (line_for_error (instack[indepth].lineno), \
539 "macro or `#include' recursion too deep"); \
543 /* Current depth in #include directives that use <...>. */
544 static int system_include_depth = 0;
546 typedef struct file_buf FILE_BUF;
548 /* The output buffer. Its LENGTH field is the amount of room allocated
549 for the buffer, not the number of chars actually present. To get
550 that, subtract outbuf.buf from outbuf.bufp. */
552 #define OUTBUF_SIZE 10 /* initial size of output buffer */
553 static FILE_BUF outbuf;
555 /* Grow output buffer OBUF points at
556 so it can hold at least NEEDED more chars. */
558 #define check_expand(OBUF, NEEDED) \
559 (((OBUF)->length - ((OBUF)->bufp - (OBUF)->buf) <= (NEEDED)) \
560 ? grow_outbuf ((OBUF), (NEEDED)) : 0)
562 struct file_name_list
564 struct file_name_list *next;
566 /* If the following is nonzero, it is a macro name.
567 Don't include the file again if that macro is defined. */
568 U_CHAR *control_macro;
569 /* If the following is nonzero, it is a C-language system include
571 int c_system_include_path;
572 /* Mapping of file names for this directory. */
573 struct file_name_map *name_map;
574 /* Non-zero if name_map is valid. */
578 /* #include "file" looks in source file dir, then stack. */
579 /* #include <file> just looks in the stack. */
580 /* -I directories are added to the end, then the defaults are added. */
582 static struct default_include {
583 char *fname; /* The name of the directory. */
584 int cplusplus; /* Only look here if we're compiling C++. */
585 int cxx_aware; /* Includes in this directory don't need to
586 be wrapped in extern "C" when compiling
588 } include_defaults_array[]
589 #ifdef INCLUDE_DEFAULTS
593 /* Pick up GNU C++ specific include files. */
594 { GPLUSPLUS_INCLUDE_DIR, 1, 1 },
596 /* This is the dir for fixincludes. Put it just before
597 the files that we fix. */
598 { GCC_INCLUDE_DIR, 0, 0 },
599 /* For cross-compilation, this dir name is generated
600 automatically in Makefile.in. */
601 { CROSS_INCLUDE_DIR, 0, 0 },
602 /* This is another place that the target system's headers might be. */
603 { TOOL_INCLUDE_DIR, 0, 0 },
604 #else /* not CROSS_COMPILE */
605 /* This should be /usr/local/include and should come before
606 the fixincludes-fixed header files. */
607 { LOCAL_INCLUDE_DIR, 0, 1 },
608 /* This is here ahead of GCC_INCLUDE_DIR because assert.h goes here.
609 Likewise, behind LOCAL_INCLUDE_DIR, where glibc puts its assert.h. */
610 { TOOL_INCLUDE_DIR, 0, 0 },
611 /* This is the dir for fixincludes. Put it just before
612 the files that we fix. */
613 { GCC_INCLUDE_DIR, 0, 0 },
614 /* Some systems have an extra dir of include files. */
615 #ifdef SYSTEM_INCLUDE_DIR
616 { SYSTEM_INCLUDE_DIR, 0, 0 },
618 { STANDARD_INCLUDE_DIR, 0, 0 },
619 #endif /* not CROSS_COMPILE */
622 #endif /* no INCLUDE_DEFAULTS */
624 /* The code looks at the defaults through this pointer, rather than through
625 the constant structure above. This pointer gets changed if an environment
626 variable specifies other defaults. */
627 static struct default_include *include_defaults = include_defaults_array;
629 static struct file_name_list *include = 0; /* First dir to search */
630 /* First dir to search for <file> */
631 /* This is the first element to use for #include <...>.
632 If it is 0, use the entire chain for such includes. */
633 static struct file_name_list *first_bracket_include = 0;
634 /* This is the first element in the chain that corresponds to
635 a directory of system header files. */
636 static struct file_name_list *first_system_include = 0;
637 static struct file_name_list *last_include = 0; /* Last in chain */
639 /* Chain of include directories to put at the end of the other chain. */
640 static struct file_name_list *after_include = 0;
641 static struct file_name_list *last_after_include = 0; /* Last in chain */
643 /* Chain to put at the start of the system include files. */
644 static struct file_name_list *before_system = 0;
645 static struct file_name_list *last_before_system = 0; /* Last in chain */
647 /* List of included files that contained #pragma once. */
648 static struct file_name_list *dont_repeat_files = 0;
650 /* List of other included files.
651 If ->control_macro if nonzero, the file had a #ifndef
652 around the entire contents, and ->control_macro gives the macro name. */
653 static struct file_name_list *all_include_files = 0;
655 /* Directory prefix that should replace `/usr' in the standard
656 include file directories. */
657 static char *include_prefix;
659 /* Global list of strings read in from precompiled files. This list
660 is kept in the order the strings are read in, with new strings being
661 added at the end through stringlist_tailp. We use this list to output
662 the strings at the end of the run.
664 static STRINGDEF *stringlist;
665 static STRINGDEF **stringlist_tailp = &stringlist;
668 /* Structure returned by create_definition */
669 typedef struct macrodef MACRODEF;
672 struct definition *defn;
677 static struct macrodef create_definition ();
680 enum sharp_token_type {
681 NO_SHARP_TOKEN, /* token not present */
683 SHARP_TOKEN = '#', /* token spelled with # only */
684 WHITE_SHARP_TOKEN, /* token spelled with # and white space */
686 PERCENT_COLON_TOKEN = '%', /* token spelled with %: only */
687 WHITE_PERCENT_COLON_TOKEN /* token spelled with %: and white space */
690 /* Structure allocated for every #define. For a simple replacement
693 nargs = -1, the `pattern' list is null, and the expansion is just
694 the replacement text. Nargs = 0 means a functionlike macro with no args,
696 #define getchar() getc (stdin) .
697 When there are args, the expansion is the replacement text with the
698 args squashed out, and the reflist is a list describing how to
699 build the output from the input: e.g., "3 chars, then the 1st arg,
700 then 9 chars, then the 3rd arg, then 0 chars, then the 2nd arg".
701 The chars here come from the expansion. Whatever is left of the
702 expansion after the last arg-occurrence is copied after that arg.
703 Note that the reflist can be arbitrarily long---
704 its length depends on the number of times the arguments appear in
705 the replacement text, not how many args there are. Example:
706 #define f(x) x+x+x+x+x+x+x would have replacement text "++++++" and
708 { (0, 1), (1, 1), (1, 1), ..., (1, 1), NULL }
709 where (x, y) means (nchars, argno). */
711 typedef struct definition DEFINITION;
714 int length; /* length of expansion string */
715 int predefined; /* True if the macro was builtin or */
716 /* came from the command line */
718 int line; /* Line number of definition */
719 char *file; /* File of definition */
720 char rest_args; /* Nonzero if last arg. absorbs the rest */
722 struct reflist *next;
724 enum sharp_token_type stringify; /* set if a # operator before arg */
725 enum sharp_token_type raw_before; /* set if a ## operator before arg */
726 enum sharp_token_type raw_after; /* set if a ## operator after arg */
728 char rest_args; /* Nonzero if this arg. absorbs the rest */
729 int nchars; /* Number of literal chars to copy before
730 this arg occurrence. */
731 int argno; /* Number of arg to substitute (origin-0) */
734 /* Names of macro args, concatenated in reverse order
735 with comma-space between them.
736 The only use of this is that we warn on redefinition
737 if this differs between the old and new definitions. */
742 /* different kinds of things that can appear in the value field
743 of a hash node. Actually, this may be useless now. */
751 * special extension string that can be added to the last macro argument to
752 * allow it to absorb the "rest" of the arguments when expanded. Ex:
753 * #define wow(a, b...) process (b, a, b)
754 * { wow (1, 2, 3); } -> { process (2, 3, 1, 2, 3); }
755 * { wow (one, two); } -> { process (two, one, two); }
756 * if this "rest_arg" is used with the concat token '##' and if it is not
757 * supplied then the token attached to with ## will not be outputted. Ex:
758 * #define wow (a, b...) process (b ## , a, ## b)
759 * { wow (1, 2); } -> { process (2, 1, 2); }
760 * { wow (one); } -> { process (one); {
762 static char rest_extension[] = "...";
763 #define REST_EXTENSION_LENGTH (sizeof (rest_extension) - 1)
765 /* The structure of a node in the hash table. The hash table
766 has entries for all tokens defined by #define commands (type T_MACRO),
767 plus some special tokens like __LINE__ (these each have their own
768 type, and the appropriate code is run when that type of node is seen.
769 It does not contain control words like "#define", which are recognized
770 by a separate piece of code. */
772 /* different flavors of hash nodes --- also used in keyword table */
774 T_DEFINE = 1, /* the `#define' keyword */
775 T_INCLUDE, /* the `#include' keyword */
776 T_INCLUDE_NEXT, /* the `#include_next' keyword */
777 T_IMPORT, /* the `#import' keyword */
778 T_IFDEF, /* the `#ifdef' keyword */
779 T_IFNDEF, /* the `#ifndef' keyword */
780 T_IF, /* the `#if' keyword */
781 T_ELSE, /* `#else' */
782 T_PRAGMA, /* `#pragma' */
783 T_ELIF, /* `#elif' */
784 T_UNDEF, /* `#undef' */
785 T_LINE, /* `#line' */
786 T_ERROR, /* `#error' */
787 T_WARNING, /* `#warning' */
788 T_ENDIF, /* `#endif' */
789 T_SCCS, /* `#sccs', used on system V. */
790 T_IDENT, /* `#ident', used on system V. */
791 T_ASSERT, /* `#assert', taken from system V. */
792 T_UNASSERT, /* `#unassert', taken from system V. */
793 T_SPECLINE, /* special symbol `__LINE__' */
794 T_DATE, /* `__DATE__' */
795 T_FILE, /* `__FILE__' */
796 T_BASE_FILE, /* `__BASE_FILE__' */
797 T_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
798 T_VERSION, /* `__VERSION__' */
799 T_SIZE_TYPE, /* `__SIZE_TYPE__' */
800 T_PTRDIFF_TYPE, /* `__PTRDIFF_TYPE__' */
801 T_WCHAR_TYPE, /* `__WCHAR_TYPE__' */
802 T_USER_LABEL_PREFIX_TYPE, /* `__USER_LABEL_PREFIX__' */
803 T_REGISTER_PREFIX_TYPE, /* `__REGISTER_PREFIX__' */
804 T_TIME, /* `__TIME__' */
805 T_CONST, /* Constant value, used by `__STDC__' */
806 T_MACRO, /* macro defined by `#define' */
807 T_DISABLED, /* macro temporarily turned off for rescan */
808 T_SPEC_DEFINED, /* special `defined' macro for use in #if statements */
809 T_PCSTRING, /* precompiled string (hashval is KEYDEF *) */
810 T_UNUSED /* Used for something not defined. */
814 struct hashnode *next; /* double links for easy deletion */
815 struct hashnode *prev;
816 struct hashnode **bucket_hdr; /* also, a back pointer to this node's hash
817 chain is kept, in case the node is the head
818 of the chain and gets deleted. */
819 enum node_type type; /* type of special token */
820 int length; /* length of token, for quick comparison */
821 U_CHAR *name; /* the actual name */
822 union hashval value; /* pointer to expansion, or whatever */
825 typedef struct hashnode HASHNODE;
827 /* Some definitions for the hash table. The hash function MUST be
828 computed as shown in hashf () below. That is because the rescan
829 loop computes the hash value `on the fly' for most tokens,
830 in order to avoid the overhead of a lot of procedure calls to
831 the hashf () function. Hashf () only exists for the sake of
832 politeness, for use when speed isn't so important. */
834 #define HASHSIZE 1403
835 static HASHNODE *hashtab[HASHSIZE];
836 #define HASHSTEP(old, c) ((old << 2) + c)
837 #define MAKE_POS(v) (v & 0x7fffffff) /* make number positive */
839 /* Symbols to predefine. */
841 #ifdef CPP_PREDEFINES
842 static char *predefs = CPP_PREDEFINES;
844 static char *predefs = "";
847 /* We let tm.h override the types used here, to handle trivial differences
848 such as the choice of unsigned int or long unsigned int for size_t.
849 When machines start needing nontrivial differences in the size type,
850 it would be best to do something here to figure out automatically
851 from other information what type to use. */
853 /* The string value for __SIZE_TYPE__. */
856 #define SIZE_TYPE "long unsigned int"
859 /* The string value for __PTRDIFF_TYPE__. */
862 #define PTRDIFF_TYPE "long int"
865 /* The string value for __WCHAR_TYPE__. */
868 #define WCHAR_TYPE "int"
870 char * wchar_type = WCHAR_TYPE;
873 /* The string value for __USER_LABEL_PREFIX__ */
875 #ifndef USER_LABEL_PREFIX
876 #define USER_LABEL_PREFIX ""
879 /* The string value for __REGISTER_PREFIX__ */
881 #ifndef REGISTER_PREFIX
882 #define REGISTER_PREFIX ""
885 /* In the definition of a #assert name, this structure forms
886 a list of the individual values asserted.
887 Each value is itself a list of "tokens".
888 These are strings that are compared by name. */
890 struct tokenlist_list {
891 struct tokenlist_list *next;
892 struct arglist *tokens;
895 struct assertion_hashnode {
896 struct assertion_hashnode *next; /* double links for easy deletion */
897 struct assertion_hashnode *prev;
898 /* also, a back pointer to this node's hash
899 chain is kept, in case the node is the head
900 of the chain and gets deleted. */
901 struct assertion_hashnode **bucket_hdr;
902 int length; /* length of token, for quick comparison */
903 U_CHAR *name; /* the actual name */
904 /* List of token-sequences. */
905 struct tokenlist_list *value;
908 typedef struct assertion_hashnode ASSERTION_HASHNODE;
910 /* Some definitions for the hash table. The hash function MUST be
911 computed as shown in hashf below. That is because the rescan
912 loop computes the hash value `on the fly' for most tokens,
913 in order to avoid the overhead of a lot of procedure calls to
914 the hashf function. hashf only exists for the sake of
915 politeness, for use when speed isn't so important. */
917 #define ASSERTION_HASHSIZE 37
918 static ASSERTION_HASHNODE *assertion_hashtab[ASSERTION_HASHSIZE];
920 /* Nonzero means inhibit macroexpansion of what seem to be
921 assertion tests, in rescan. For #if. */
922 static int assertions_flag;
924 /* `struct directive' defines one #-directive, including how to handle it. */
927 int length; /* Length of name */
928 int (*func)(); /* Function to handle directive */
929 char *name; /* Name of directive */
930 enum node_type type; /* Code which describes which directive. */
931 char angle_brackets; /* Nonzero => <...> is special. */
932 char traditional_comments; /* Nonzero: keep comments if -traditional. */
933 char pass_thru; /* Copy preprocessed directive to output file. */
936 /* Here is the actual list of #-directives, most-often-used first. */
938 static struct directive directive_table[] = {
939 { 6, do_define, "define", T_DEFINE, 0, 1},
940 { 2, do_if, "if", T_IF},
941 { 5, do_xifdef, "ifdef", T_IFDEF},
942 { 6, do_xifdef, "ifndef", T_IFNDEF},
943 { 5, do_endif, "endif", T_ENDIF},
944 { 4, do_else, "else", T_ELSE},
945 { 4, do_elif, "elif", T_ELIF},
946 { 4, do_line, "line", T_LINE},
947 { 7, do_include, "include", T_INCLUDE, 1},
948 { 12, do_include, "include_next", T_INCLUDE_NEXT, 1},
949 { 6, do_include, "import", T_IMPORT, 1},
950 { 5, do_undef, "undef", T_UNDEF},
951 { 5, do_error, "error", T_ERROR},
952 { 7, do_warning, "warning", T_WARNING},
953 #ifdef SCCS_DIRECTIVE
954 { 4, do_sccs, "sccs", T_SCCS},
956 { 6, do_pragma, "pragma", T_PRAGMA, 0, 0, 1},
957 { 5, do_ident, "ident", T_IDENT},
958 { 6, do_assert, "assert", T_ASSERT},
959 { 8, do_unassert, "unassert", T_UNASSERT},
960 { -1, 0, "", T_UNUSED},
963 /* When a directive handler is called,
964 this points to the # (or the : of the %:) that started the directive. */
965 U_CHAR *directive_start;
967 /* table to tell if char can be part of a C identifier. */
968 U_CHAR is_idchar[256];
969 /* table to tell if char can be first char of a c identifier. */
970 U_CHAR is_idstart[256];
971 /* table to tell if c is horizontal space. */
972 U_CHAR is_hor_space[256];
973 /* table to tell if c is horizontal or vertical space. */
974 static U_CHAR is_space[256];
975 /* names of some characters */
976 static char *char_name[256];
978 #define SKIP_WHITE_SPACE(p) do { while (is_hor_space[*p]) p++; } while (0)
979 #define SKIP_ALL_WHITE_SPACE(p) do { while (is_space[*p]) p++; } while (0)
981 static int errors = 0; /* Error counter for exit code */
983 /* Name of output file, for error messages. */
984 static char *out_fname;
986 /* Zero means dollar signs are punctuation.
987 -$ stores 0; -traditional may store 1. Default is 1 for VMS, 0 otherwise.
988 This must be 0 for correct processing of this ANSI C program:
990 #define lose(b) foo (b)
993 static int dollars_in_ident;
994 #ifndef DOLLARS_IN_IDENTIFIERS
995 #define DOLLARS_IN_IDENTIFIERS 1
998 static FILE_BUF expand_to_temp_buffer ();
1000 static DEFINITION *collect_expansion ();
1002 /* Stack of conditionals currently in progress
1003 (including both successful and failing conditionals). */
1006 struct if_stack *next; /* for chaining to the next stack frame */
1007 char *fname; /* copied from input when frame is made */
1008 int lineno; /* similarly */
1009 int if_succeeded; /* true if a leg of this if-group
1010 has been passed through rescan */
1011 U_CHAR *control_macro; /* For #ifndef at start of file,
1012 this is the macro name tested. */
1013 enum node_type type; /* type of last directive seen in this group */
1015 typedef struct if_stack IF_STACK_FRAME;
1016 static IF_STACK_FRAME *if_stack = NULL;
1018 /* Buffer of -M output. */
1019 static char *deps_buffer;
1021 /* Number of bytes allocated in above. */
1022 static int deps_allocated_size;
1024 /* Number of bytes used. */
1025 static int deps_size;
1027 /* Number of bytes since the last newline. */
1028 static int deps_column;
1030 /* Nonzero means -I- has been seen,
1031 so don't look for #include "foo" the source-file directory. */
1032 static int ignore_srcdir;
1034 /* Read LEN bytes at PTR from descriptor DESC, for file FILENAME,
1035 retrying if necessary. Return a negative value if an error occurs,
1036 otherwise return the actual number of bytes read,
1037 which must be LEN unless end-of-file was reached. */
1040 safe_read (desc, ptr, len)
1047 int nchars = read (desc, ptr, left);
1064 /* Write LEN bytes at PTR to descriptor DESC,
1065 retrying if necessary, and treating any real error as fatal. */
1068 safe_write (desc, ptr, len)
1074 int written = write (desc, ptr, len);
1081 pfatal_with_name (out_fname);
1099 char **pend_files = (char **) xmalloc (argc * sizeof (char *));
1100 char **pend_defs = (char **) xmalloc (argc * sizeof (char *));
1101 char **pend_undefs = (char **) xmalloc (argc * sizeof (char *));
1102 char **pend_assertions = (char **) xmalloc (argc * sizeof (char *));
1103 char **pend_includes = (char **) xmalloc (argc * sizeof (char *));
1105 /* Record the option used with each element of pend_assertions.
1106 This is preparation for supporting more than one option for making
1108 char **pend_assertion_options = (char **) xmalloc (argc * sizeof (char *));
1109 int inhibit_predefs = 0;
1110 int no_standard_includes = 0;
1111 int no_standard_cplusplus_includes = 0;
1112 int missing_newline = 0;
1114 /* Non-0 means don't output the preprocessed program. */
1115 int inhibit_output = 0;
1116 /* Non-0 means -v, so print the full set of include dirs. */
1119 /* File name which deps are being written to.
1120 This is 0 if deps are being written to stdout. */
1121 char *deps_file = 0;
1122 /* Fopen file mode to open deps_file with. */
1123 char *deps_mode = "a";
1124 /* Stream on which to print the dependency information. */
1125 FILE *deps_stream = 0;
1126 /* Target-name to write with the dependency information. */
1127 char *deps_target = 0;
1130 /* Get rid of any avoidable limit on stack size. */
1134 /* Set the stack limit huge so that alloca (particularly stringtab
1135 * in dbxread.c) does not fail. */
1136 getrlimit (RLIMIT_STACK, &rlim);
1137 rlim.rlim_cur = rlim.rlim_max;
1138 setrlimit (RLIMIT_STACK, &rlim);
1140 #endif /* RLIMIT_STACK defined */
1143 signal (SIGPIPE, pipe_closed);
1146 p = argv[0] + strlen (argv[0]);
1147 while (p != argv[0] && p[-1] != '/'
1148 #ifdef DIR_SEPARATOR
1149 && p[-1] != DIR_SEPARATOR
1157 /* Remove directories from PROGNAME. */
1160 if ((p = rindex (s, ':')) != 0) s = p + 1; /* skip device */
1161 if ((p = rindex (s, ']')) != 0) s = p + 1; /* skip directory */
1162 if ((p = rindex (s, '>')) != 0) s = p + 1; /* alternate (int'n'l) dir */
1163 s = progname = savestring (s);
1164 if ((p = rindex (s, ';')) != 0) *p = '\0'; /* strip version number */
1165 if ((p = rindex (s, '.')) != 0 /* strip type iff ".exe" */
1166 && (p[1] == 'e' || p[1] == 'E')
1167 && (p[2] == 'x' || p[2] == 'X')
1168 && (p[3] == 'e' || p[3] == 'E')
1177 /* Initialize is_idchar to allow $. */
1178 dollars_in_ident = 1;
1179 initialize_char_syntax ();
1180 dollars_in_ident = DOLLARS_IN_IDENTIFIERS > 0;
1182 no_line_commands = 0;
1184 dump_macros = dump_none;
1187 cplusplus_comments = 0;
1189 bzero ((char *) pend_files, argc * sizeof (char *));
1190 bzero ((char *) pend_defs, argc * sizeof (char *));
1191 bzero ((char *) pend_undefs, argc * sizeof (char *));
1192 bzero ((char *) pend_assertions, argc * sizeof (char *));
1193 bzero ((char *) pend_includes, argc * sizeof (char *));
1195 /* Process switches and find input file name. */
1197 for (i = 1; i < argc; i++) {
1198 if (argv[i][0] != '-') {
1199 if (out_fname != NULL)
1200 fatal ("Usage: %s [switches] input output", argv[0]);
1201 else if (in_fname != NULL)
1202 out_fname = argv[i];
1206 switch (argv[i][1]) {
1209 if (!strcmp (argv[i], "-include")) {
1211 fatal ("Filename missing after `-include' option");
1213 pend_includes[i] = argv[i+1], i++;
1215 if (!strcmp (argv[i], "-imacros")) {
1217 fatal ("Filename missing after `-imacros' option");
1219 pend_files[i] = argv[i+1], i++;
1221 if (!strcmp (argv[i], "-iprefix")) {
1223 fatal ("Filename missing after `-iprefix' option");
1225 include_prefix = argv[++i];
1227 if (!strcmp (argv[i], "-ifoutput")) {
1228 output_conditionals = 1;
1230 if (!strcmp (argv[i], "-isystem")) {
1231 struct file_name_list *dirtmp;
1234 fatal ("Filename missing after `-isystem' option");
1236 dirtmp = (struct file_name_list *)
1237 xmalloc (sizeof (struct file_name_list));
1239 dirtmp->control_macro = 0;
1240 dirtmp->c_system_include_path = 1;
1241 dirtmp->fname = (char *) xmalloc (strlen (argv[i+1]) + 1);
1242 strcpy (dirtmp->fname, argv[++i]);
1243 dirtmp->got_name_map = 0;
1245 if (before_system == 0)
1246 before_system = dirtmp;
1248 last_before_system->next = dirtmp;
1249 last_before_system = dirtmp; /* Tail follows the last one */
1251 /* Add directory to end of path for includes,
1252 with the default prefix at the front of its name. */
1253 if (!strcmp (argv[i], "-iwithprefix")) {
1254 struct file_name_list *dirtmp;
1257 if (include_prefix != 0)
1258 prefix = include_prefix;
1260 prefix = savestring (GCC_INCLUDE_DIR);
1261 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1262 if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
1263 prefix[strlen (prefix) - 7] = 0;
1266 dirtmp = (struct file_name_list *)
1267 xmalloc (sizeof (struct file_name_list));
1268 dirtmp->next = 0; /* New one goes on the end */
1269 dirtmp->control_macro = 0;
1270 dirtmp->c_system_include_path = 0;
1272 fatal ("Directory name missing after `-iwithprefix' option");
1274 dirtmp->fname = (char *) xmalloc (strlen (argv[i+1])
1275 + strlen (prefix) + 1);
1276 strcpy (dirtmp->fname, prefix);
1277 strcat (dirtmp->fname, argv[++i]);
1278 dirtmp->got_name_map = 0;
1280 if (after_include == 0)
1281 after_include = dirtmp;
1283 last_after_include->next = dirtmp;
1284 last_after_include = dirtmp; /* Tail follows the last one */
1286 /* Add directory to main path for includes,
1287 with the default prefix at the front of its name. */
1288 if (!strcmp (argv[i], "-iwithprefixbefore")) {
1289 struct file_name_list *dirtmp;
1292 if (include_prefix != 0)
1293 prefix = include_prefix;
1295 prefix = savestring (GCC_INCLUDE_DIR);
1296 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1297 if (!strcmp (prefix + strlen (prefix) - 8, "/include"))
1298 prefix[strlen (prefix) - 7] = 0;
1301 dirtmp = (struct file_name_list *)
1302 xmalloc (sizeof (struct file_name_list));
1303 dirtmp->next = 0; /* New one goes on the end */
1304 dirtmp->control_macro = 0;
1305 dirtmp->c_system_include_path = 0;
1307 fatal ("Directory name missing after `-iwithprefixbefore' option");
1309 dirtmp->fname = (char *) xmalloc (strlen (argv[i+1])
1310 + strlen (prefix) + 1);
1311 strcpy (dirtmp->fname, prefix);
1312 strcat (dirtmp->fname, argv[++i]);
1313 dirtmp->got_name_map = 0;
1315 append_include_chain (dirtmp, dirtmp);
1317 /* Add directory to end of path for includes. */
1318 if (!strcmp (argv[i], "-idirafter")) {
1319 struct file_name_list *dirtmp;
1321 dirtmp = (struct file_name_list *)
1322 xmalloc (sizeof (struct file_name_list));
1323 dirtmp->next = 0; /* New one goes on the end */
1324 dirtmp->control_macro = 0;
1325 dirtmp->c_system_include_path = 0;
1327 fatal ("Directory name missing after `-idirafter' option");
1329 dirtmp->fname = argv[++i];
1330 dirtmp->got_name_map = 0;
1332 if (after_include == 0)
1333 after_include = dirtmp;
1335 last_after_include->next = dirtmp;
1336 last_after_include = dirtmp; /* Tail follows the last one */
1341 if (out_fname != NULL)
1342 fatal ("Output filename specified twice");
1344 fatal ("Filename missing after -o option");
1345 out_fname = argv[++i];
1346 if (!strcmp (out_fname, "-"))
1351 if (!strcmp (argv[i], "-pedantic"))
1353 else if (!strcmp (argv[i], "-pedantic-errors")) {
1355 pedantic_errors = 1;
1356 } else if (!strcmp (argv[i], "-pcp")) {
1359 fatal ("Filename missing after -pcp option");
1360 pcp_fname = argv[++i];
1362 ((pcp_fname[0] != '-' || pcp_fname[1] != '\0')
1363 ? fopen (pcp_fname, "w")
1364 : fdopen (dup (fileno (stdout)), "w"));
1365 if (pcp_outfile == 0)
1366 pfatal_with_name (pcp_fname);
1372 if (!strcmp (argv[i], "-traditional")) {
1374 if (dollars_in_ident > 0)
1375 dollars_in_ident = 1;
1376 } else if (!strcmp (argv[i], "-trigraphs")) {
1382 if (! strcmp (argv[i], "-lang-c"))
1383 cplusplus = 0, cplusplus_comments = 0, objc = 0;
1384 if (! strcmp (argv[i], "-lang-c++"))
1385 cplusplus = 1, cplusplus_comments = 1, objc = 0;
1386 if (! strcmp (argv[i], "-lang-c-c++-comments"))
1387 cplusplus = 0, cplusplus_comments = 1, objc = 0;
1388 if (! strcmp (argv[i], "-lang-objc"))
1389 objc = 1, cplusplus = 0, cplusplus_comments = 1;
1390 if (! strcmp (argv[i], "-lang-objc++"))
1391 objc = 1, cplusplus = 1, cplusplus_comments = 1;
1392 if (! strcmp (argv[i], "-lang-asm"))
1394 if (! strcmp (argv[i], "-lint"))
1399 cplusplus = 1, cplusplus_comments = 1;
1403 inhibit_warnings = 1;
1407 if (!strcmp (argv[i], "-Wtrigraphs"))
1409 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1411 else if (!strcmp (argv[i], "-Wcomment"))
1413 else if (!strcmp (argv[i], "-Wno-comment"))
1415 else if (!strcmp (argv[i], "-Wcomments"))
1417 else if (!strcmp (argv[i], "-Wno-comments"))
1419 else if (!strcmp (argv[i], "-Wtraditional"))
1421 else if (!strcmp (argv[i], "-Wno-traditional"))
1423 else if (!strcmp (argv[i], "-Wimport"))
1425 else if (!strcmp (argv[i], "-Wno-import"))
1427 else if (!strcmp (argv[i], "-Werror"))
1428 warnings_are_errors = 1;
1429 else if (!strcmp (argv[i], "-Wno-error"))
1430 warnings_are_errors = 0;
1431 else if (!strcmp (argv[i], "-Wall"))
1439 /* The style of the choices here is a bit mixed.
1440 The chosen scheme is a hybrid of keeping all options in one string
1441 and specifying each option in a separate argument:
1442 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1443 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1444 -M[M][G][D file]. This is awkward to handle in specs, and is not
1446 /* ??? -MG must be specified in addition to one of -M or -MM.
1447 This can be relaxed in the future without breaking anything.
1448 The converse isn't true. */
1450 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1451 if (!strcmp (argv[i], "-MG"))
1453 print_deps_missing_files = 1;
1456 if (!strcmp (argv[i], "-M"))
1458 else if (!strcmp (argv[i], "-MM"))
1460 else if (!strcmp (argv[i], "-MD"))
1462 else if (!strcmp (argv[i], "-MMD"))
1464 /* For -MD and -MMD options, write deps on file named by next arg. */
1465 if (!strcmp (argv[i], "-MD")
1466 || !strcmp (argv[i], "-MMD")) {
1468 fatal ("Filename missing after %s option", argv[i]);
1470 deps_file = argv[i];
1473 /* For -M and -MM, write deps on standard output
1474 and suppress the usual output. */
1475 deps_stream = stdout;
1482 char *p = argv[i] + 2;
1485 /* Arg to -d specifies what parts of macros to dump */
1488 dump_macros = dump_only;
1492 dump_macros = dump_names;
1495 dump_macros = dump_definitions;
1503 if (argv[i][2] == '3')
1508 fprintf (stderr, "GNU CPP version %s", version_string);
1509 #ifdef TARGET_VERSION
1512 fprintf (stderr, "\n");
1517 print_include_names = 1;
1521 if (argv[i][2] != 0)
1522 pend_defs[i] = argv[i] + 2;
1523 else if (i + 1 == argc)
1524 fatal ("Macro name missing after -D option");
1526 i++, pend_defs[i] = argv[i];
1533 if (argv[i][2] != 0)
1535 else if (i + 1 == argc)
1536 fatal ("Assertion missing after -A option");
1540 if (!strcmp (p, "-")) {
1541 /* -A- eliminates all predefined macros and assertions.
1542 Let's include also any that were specified earlier
1543 on the command line. That way we can get rid of any
1544 that were passed automatically in from GCC. */
1546 inhibit_predefs = 1;
1547 for (j = 0; j < i; j++)
1548 pend_defs[j] = pend_assertions[j] = 0;
1550 pend_assertions[i] = p;
1551 pend_assertion_options[i] = "-A";
1556 case 'U': /* JF #undef something */
1557 if (argv[i][2] != 0)
1558 pend_undefs[i] = argv[i] + 2;
1559 else if (i + 1 == argc)
1560 fatal ("Macro name missing after -U option");
1562 pend_undefs[i] = argv[i+1], i++;
1566 put_out_comments = 1;
1569 case 'E': /* -E comes from cc -E; ignore it. */
1573 no_line_commands = 1;
1576 case '$': /* Don't include $ in identifiers. */
1577 dollars_in_ident = 0;
1580 case 'I': /* Add directory to path for includes. */
1582 struct file_name_list *dirtmp;
1584 if (! ignore_srcdir && !strcmp (argv[i] + 2, "-")) {
1586 /* Don't use any preceding -I directories for #include <...>. */
1587 first_bracket_include = 0;
1590 dirtmp = (struct file_name_list *)
1591 xmalloc (sizeof (struct file_name_list));
1592 dirtmp->next = 0; /* New one goes on the end */
1593 dirtmp->control_macro = 0;
1594 dirtmp->c_system_include_path = 0;
1595 if (argv[i][2] != 0)
1596 dirtmp->fname = argv[i] + 2;
1597 else if (i + 1 == argc)
1598 fatal ("Directory name missing after -I option");
1600 dirtmp->fname = argv[++i];
1601 dirtmp->got_name_map = 0;
1602 append_include_chain (dirtmp, dirtmp);
1608 if (!strcmp (argv[i], "-nostdinc"))
1609 /* -nostdinc causes no default include directories.
1610 You must specify all include-file directories with -I. */
1611 no_standard_includes = 1;
1612 else if (!strcmp (argv[i], "-nostdinc++"))
1613 /* -nostdinc++ causes no default C++-specific include directories. */
1614 no_standard_cplusplus_includes = 1;
1615 else if (!strcmp (argv[i], "-noprecomp"))
1620 /* Sun compiler passes undocumented switch "-undef".
1621 Let's assume it means to inhibit the predefined symbols. */
1622 inhibit_predefs = 1;
1625 case '\0': /* JF handle '-' as file name meaning stdin or stdout */
1626 if (in_fname == NULL) {
1629 } else if (out_fname == NULL) {
1632 } /* else fall through into error */
1635 fatal ("Invalid option `%s'", argv[i]);
1640 /* Add dirs from CPATH after dirs from -I. */
1641 /* There seems to be confusion about what CPATH should do,
1642 so for the moment it is not documented. */
1643 /* Some people say that CPATH should replace the standard include dirs,
1644 but that seems pointless: it comes before them, so it overrides them
1646 p = (char *) getenv ("CPATH");
1647 if (p != 0 && ! no_standard_includes)
1650 /* Now that dollars_in_ident is known, initialize is_idchar. */
1651 initialize_char_syntax ();
1653 /* Initialize output buffer */
1655 outbuf.buf = (U_CHAR *) xmalloc (OUTBUF_SIZE);
1656 outbuf.bufp = outbuf.buf;
1657 outbuf.length = OUTBUF_SIZE;
1659 /* Do partial setup of input buffer for the sake of generating
1660 early #line directives (when -g is in effect). */
1662 fp = &instack[++indepth];
1663 if (in_fname == NULL)
1665 fp->nominal_fname = fp->fname = in_fname;
1668 /* In C++, wchar_t is a distinct basic type, and we can expect
1669 __wchar_t to be defined by cc1plus. */
1671 wchar_type = "__wchar_t";
1673 /* Install __LINE__, etc. Must follow initialize_char_syntax
1674 and option processing. */
1675 initialize_builtins (fp, &outbuf);
1677 /* Do standard #defines and assertions
1678 that identify system and machine type. */
1680 if (!inhibit_predefs) {
1681 char *p = (char *) alloca (strlen (predefs) + 1);
1682 strcpy (p, predefs);
1685 while (*p == ' ' || *p == '\t')
1687 /* Handle -D options. */
1688 if (p[0] == '-' && p[1] == 'D') {
1690 while (*p && *p != ' ' && *p != '\t')
1695 output_line_command (fp, &outbuf, 0, same_file);
1696 make_definition (q, &outbuf);
1697 while (*p == ' ' || *p == '\t')
1699 } else if (p[0] == '-' && p[1] == 'A') {
1700 /* Handle -A options (assertions). */
1709 past_name = assertion;
1710 /* Locate end of name. */
1711 while (*past_name && *past_name != ' '
1712 && *past_name != '\t' && *past_name != '(')
1714 /* Locate `(' at start of value. */
1716 while (*value && (*value == ' ' || *value == '\t'))
1718 if (*value++ != '(')
1720 while (*value && (*value == ' ' || *value == '\t'))
1723 /* Locate end of value. */
1724 while (*past_value && *past_value != ' '
1725 && *past_value != '\t' && *past_value != ')')
1727 termination = past_value;
1728 while (*termination && (*termination == ' ' || *termination == '\t'))
1730 if (*termination++ != ')')
1732 if (*termination && *termination != ' ' && *termination != '\t')
1734 /* Temporarily null-terminate the value. */
1735 save_char = *termination;
1736 *termination = '\0';
1737 /* Install the assertion. */
1738 make_assertion ("-A", assertion);
1739 *termination = (char) save_char;
1741 while (*p == ' ' || *p == '\t')
1749 /* Now handle the command line options. */
1751 /* Do -U's, -D's and -A's in the order they were seen. */
1752 for (i = 1; i < argc; i++) {
1753 if (pend_undefs[i]) {
1755 output_line_command (fp, &outbuf, 0, same_file);
1756 make_undef (pend_undefs[i], &outbuf);
1760 output_line_command (fp, &outbuf, 0, same_file);
1761 make_definition (pend_defs[i], &outbuf);
1763 if (pend_assertions[i])
1764 make_assertion (pend_assertion_options[i], pend_assertions[i]);
1767 done_initializing = 1;
1769 { /* read the appropriate environment variable and if it exists
1770 replace include_defaults with the listed path. */
1772 switch ((objc << 1) + cplusplus)
1775 epath = getenv ("C_INCLUDE_PATH");
1778 epath = getenv ("CPLUS_INCLUDE_PATH");
1781 epath = getenv ("OBJC_INCLUDE_PATH");
1784 epath = getenv ("OBJCPLUS_INCLUDE_PATH");
1787 /* If the environment var for this language is set,
1788 add to the default list of include directories. */
1790 char *nstore = (char *) alloca (strlen (epath) + 2);
1792 char *startp, *endp;
1794 for (num_dirs = 1, startp = epath; *startp; startp++)
1795 if (*startp == PATH_SEPARATOR)
1798 = (struct default_include *) xmalloc ((num_dirs
1799 * sizeof (struct default_include))
1800 + sizeof (include_defaults_array));
1801 startp = endp = epath;
1804 /* Handle cases like c:/usr/lib:d:/gcc/lib */
1805 if ((*endp == PATH_SEPARATOR
1806 #if 0 /* Obsolete, now that we use semicolons as the path separator. */
1808 && (endp-startp != 1 || !isalpha (*startp))
1813 strncpy (nstore, startp, endp-startp);
1815 strcpy (nstore, ".");
1817 nstore[endp-startp] = '\0';
1819 include_defaults[num_dirs].fname = savestring (nstore);
1820 include_defaults[num_dirs].cplusplus = cplusplus;
1821 include_defaults[num_dirs].cxx_aware = 1;
1825 endp = startp = endp + 1;
1829 /* Put the usual defaults back in at the end. */
1830 bcopy ((char *) include_defaults_array,
1831 (char *) &include_defaults[num_dirs],
1832 sizeof (include_defaults_array));
1836 append_include_chain (before_system, last_before_system);
1837 first_system_include = before_system;
1839 /* Unless -fnostdinc,
1840 tack on the standard include file dirs to the specified list */
1841 if (!no_standard_includes) {
1842 struct default_include *p = include_defaults;
1843 char *specd_prefix = include_prefix;
1844 char *default_prefix = savestring (GCC_INCLUDE_DIR);
1845 int default_len = 0;
1846 /* Remove the `include' from /usr/local/lib/gcc.../include. */
1847 if (!strcmp (default_prefix + strlen (default_prefix) - 8, "/include")) {
1848 default_len = strlen (default_prefix) - 7;
1849 default_prefix[default_len] = 0;
1851 /* Search "translated" versions of GNU directories.
1852 These have /usr/local/lib/gcc... replaced by specd_prefix. */
1853 if (specd_prefix != 0 && default_len != 0)
1854 for (p = include_defaults; p->fname; p++) {
1855 /* Some standard dirs are only for C++. */
1856 if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
1857 /* Does this dir start with the prefix? */
1858 if (!strncmp (p->fname, default_prefix, default_len)) {
1859 /* Yes; change prefix and add to search list. */
1860 struct file_name_list *new
1861 = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
1862 int this_len = strlen (specd_prefix) + strlen (p->fname) - default_len;
1863 char *str = (char *) xmalloc (this_len + 1);
1864 strcpy (str, specd_prefix);
1865 strcat (str, p->fname + default_len);
1867 new->control_macro = 0;
1868 new->c_system_include_path = !p->cxx_aware;
1869 new->got_name_map = 0;
1870 append_include_chain (new, new);
1871 if (first_system_include == 0)
1872 first_system_include = new;
1876 /* Search ordinary names for GNU include directories. */
1877 for (p = include_defaults; p->fname; p++) {
1878 /* Some standard dirs are only for C++. */
1879 if (!p->cplusplus || (cplusplus && !no_standard_cplusplus_includes)) {
1880 struct file_name_list *new
1881 = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
1882 new->control_macro = 0;
1883 new->c_system_include_path = !p->cxx_aware;
1884 new->fname = p->fname;
1885 new->got_name_map = 0;
1886 append_include_chain (new, new);
1887 if (first_system_include == 0)
1888 first_system_include = new;
1893 /* Tack the after_include chain at the end of the include chain. */
1894 append_include_chain (after_include, last_after_include);
1895 if (first_system_include == 0)
1896 first_system_include = after_include;
1898 /* With -v, print the list of dirs to search. */
1900 struct file_name_list *p;
1901 fprintf (stderr, "#include \"...\" search starts here:\n");
1902 for (p = include; p; p = p->next) {
1903 if (p == first_bracket_include)
1904 fprintf (stderr, "#include <...> search starts here:\n");
1905 fprintf (stderr, " %s\n", p->fname);
1907 fprintf (stderr, "End of search list.\n");
1910 /* Scan the -imacros files before the main input.
1911 Much like #including them, but with no_output set
1912 so that only their macro definitions matter. */
1914 no_output++; no_record_file++;
1915 for (i = 1; i < argc; i++)
1916 if (pend_files[i]) {
1917 int fd = open (pend_files[i], O_RDONLY, 0666);
1919 perror_with_name (pend_files[i]);
1920 return FAILURE_EXIT_CODE;
1922 finclude (fd, pend_files[i], &outbuf, 0, NULL_PTR);
1924 no_output--; no_record_file--;
1926 /* Copy the entire contents of the main input file into
1927 the stacked input buffer previously allocated for it. */
1929 /* JF check for stdin */
1930 if (in_fname == NULL || *in_fname == 0) {
1933 } else if ((f = open (in_fname, O_RDONLY, 0666)) < 0)
1936 /* -MG doesn't select the form of output and must be specified with one of
1937 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
1938 inhibit compilation. */
1939 if (print_deps_missing_files && (print_deps == 0 || !inhibit_output))
1940 fatal ("-MG must be specified with one of -M or -MM");
1942 /* Either of two environment variables can specify output of deps.
1943 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
1944 where OUTPUT_FILE is the file to write deps info to
1945 and DEPS_TARGET is the target to mention in the deps. */
1948 && (getenv ("SUNPRO_DEPENDENCIES") != 0
1949 || getenv ("DEPENDENCIES_OUTPUT") != 0)) {
1950 char *spec = getenv ("DEPENDENCIES_OUTPUT");
1955 spec = getenv ("SUNPRO_DEPENDENCIES");
1962 /* Find the space before the DEPS_TARGET, if there is one. */
1963 /* This should use index. (mrs) */
1964 while (*s != 0 && *s != ' ') s++;
1966 deps_target = s + 1;
1967 output_file = (char *) xmalloc (s - spec + 1);
1968 bcopy (spec, output_file, s - spec);
1969 output_file[s - spec] = 0;
1976 deps_file = output_file;
1980 /* For -M, print the expected object file name
1981 as the target of this Make-rule. */
1983 deps_allocated_size = 200;
1984 deps_buffer = (char *) xmalloc (deps_allocated_size);
1990 deps_output (deps_target, ':');
1991 } else if (*in_fname == 0) {
1992 deps_output ("-", ':');
1997 /* Discard all directory prefixes from filename. */
1998 if ((q = rindex (in_fname, '/')) != NULL
1999 #ifdef DIR_SEPARATOR
2000 && (q = rindex (in_fname, DIR_SEPARATOR)) != NULL
2007 /* Copy remainder to mungable area. */
2008 p = (char *) alloca (strlen(q) + 8);
2011 /* Output P, but remove known suffixes. */
2015 && p[len - 2] == '.'
2016 && index("cCsSm", p[len - 1]))
2019 && p[len - 3] == '.'
2020 && p[len - 2] == 'c'
2021 && p[len - 1] == 'c')
2024 && p[len - 4] == '.'
2025 && p[len - 3] == 'c'
2026 && p[len - 2] == 'x'
2027 && p[len - 1] == 'x')
2030 && p[len - 4] == '.'
2031 && p[len - 3] == 'c'
2032 && p[len - 2] == 'p'
2033 && p[len - 1] == 'p')
2036 /* Supply our own suffix. */
2043 deps_output (p, ':');
2044 deps_output (in_fname, ' ');
2048 file_size_and_mode (f, &st_mode, &st_size);
2049 fp->nominal_fname = fp->fname = in_fname;
2051 fp->system_header_p = 0;
2052 /* JF all this is mine about reading pipes and ttys */
2053 if (! S_ISREG (st_mode)) {
2054 /* Read input from a file that is not a normal disk file.
2055 We cannot preallocate a buffer with the correct size,
2056 so we must read in the file a piece at the time and make it bigger. */
2063 fp->buf = (U_CHAR *) xmalloc (bsize + 2);
2065 cnt = safe_read (f, fp->buf + size, bsize - size);
2066 if (cnt < 0) goto perror; /* error! */
2068 if (size != bsize) break; /* End of file */
2070 fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
2074 /* Read a file whose size we can determine in advance.
2075 For the sake of VMS, st_size is just an upper bound. */
2076 fp->buf = (U_CHAR *) xmalloc (st_size + 2);
2077 fp->length = safe_read (f, fp->buf, st_size);
2078 if (fp->length < 0) goto perror;
2081 fp->if_stack = if_stack;
2083 /* Make sure data ends with a newline. And put a null after it. */
2085 if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
2086 /* Backslash-newline at end is not good enough. */
2087 || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
2088 fp->buf[fp->length++] = '\n';
2089 missing_newline = 1;
2091 fp->buf[fp->length] = '\0';
2093 /* Unless inhibited, convert trigraphs in the input. */
2098 /* Now that we know the input file is valid, open the output. */
2100 if (!out_fname || !strcmp (out_fname, ""))
2101 out_fname = "stdout";
2102 else if (! freopen (out_fname, "w", stdout))
2103 pfatal_with_name (out_fname);
2105 output_line_command (fp, &outbuf, 0, same_file);
2107 /* Scan the -include files before the main input. */
2110 for (i = 1; i < argc; i++)
2111 if (pend_includes[i]) {
2112 int fd = open (pend_includes[i], O_RDONLY, 0666);
2114 perror_with_name (pend_includes[i]);
2115 return FAILURE_EXIT_CODE;
2117 finclude (fd, pend_includes[i], &outbuf, 0, NULL_PTR);
2121 /* Scan the input, processing macros and directives. */
2123 rescan (&outbuf, 0);
2125 if (missing_newline)
2128 if (pedantic && missing_newline)
2129 pedwarn ("file does not end in newline");
2131 /* Now we have processed the entire input
2132 Write whichever kind of output has been requested. */
2134 if (dump_macros == dump_only)
2136 else if (! inhibit_output) {
2141 /* Don't actually write the deps file if compilation has failed. */
2143 if (deps_file && ! (deps_stream = fopen (deps_file, deps_mode)))
2144 pfatal_with_name (deps_file);
2145 fputs (deps_buffer, deps_stream);
2146 putc ('\n', deps_stream);
2148 if (ferror (deps_stream) || fclose (deps_stream) != 0)
2149 fatal ("I/O error on output");
2154 if (pcp_outfile && pcp_outfile != stdout
2155 && (ferror (pcp_outfile) || fclose (pcp_outfile) != 0))
2156 fatal ("I/O error on `-pcp' output");
2158 if (ferror (stdout) || fclose (stdout) != 0)
2159 fatal ("I/O error on output");
2162 exit (FAILURE_EXIT_CODE);
2163 exit (SUCCESS_EXIT_CODE);
2166 pfatal_with_name (in_fname);
2170 /* Given a colon-separated list of file names PATH,
2171 add all the names to the search path for include files. */
2185 struct file_name_list *dirtmp;
2187 /* Find the end of this name. */
2188 while (*q != 0 && *q != PATH_SEPARATOR) q++;
2190 /* An empty name in the path stands for the current directory. */
2191 name = (char *) xmalloc (2);
2195 /* Otherwise use the directory that is named. */
2196 name = (char *) xmalloc (q - p + 1);
2197 bcopy (p, name, q - p);
2201 dirtmp = (struct file_name_list *)
2202 xmalloc (sizeof (struct file_name_list));
2203 dirtmp->next = 0; /* New one goes on the end */
2204 dirtmp->control_macro = 0;
2205 dirtmp->c_system_include_path = 0;
2206 dirtmp->fname = name;
2207 dirtmp->got_name_map = 0;
2208 append_include_chain (dirtmp, dirtmp);
2210 /* Advance past this name. */
2214 /* Skip the colon. */
2219 /* Return the address of the first character in S that equals C.
2220 S is an array of length N, possibly containing '\0's, and followed by '\0'.
2221 Return 0 if there is no such character. Assume that C itself is not '\0'.
2222 If we knew we could use memchr, we could just invoke memchr (S, C, N),
2223 but unfortunately memchr isn't autoconfigured yet. */
2232 char *q = index (s, c);
2234 return (U_CHAR *) q;
2246 /* Pre-C-Preprocessor to translate ANSI trigraph idiocy in BUF
2247 before main CCCP processing. Name `pcp' is also in honor of the
2248 drugs the trigraph designers must have been on.
2250 Using an extra pass through the buffer takes a little extra time,
2251 but is infinitely less hairy than trying to handle trigraphs inside
2252 strings, etc. everywhere, and also makes sure that trigraphs are
2253 only translated in the top level of processing. */
2259 register U_CHAR c, *fptr, *bptr, *sptr, *lptr;
2262 fptr = bptr = sptr = buf->buf;
2263 lptr = fptr + buf->length;
2264 while ((sptr = (U_CHAR *) index0 (sptr, '?', lptr - sptr)) != NULL) {
2301 len = sptr - fptr - 2;
2303 /* BSD doc says bcopy () works right for overlapping strings. In ANSI
2304 C, this will be memmove (). */
2305 if (bptr != fptr && len > 0)
2306 bcopy ((char *) fptr, (char *) bptr, len);
2312 len = buf->length - (fptr - buf->buf);
2313 if (bptr != fptr && len > 0)
2314 bcopy ((char *) fptr, (char *) bptr, len);
2315 buf->length -= fptr - bptr;
2316 buf->buf[buf->length] = '\0';
2317 if (warn_trigraphs && fptr != bptr)
2318 warning ("%d trigraph(s) encountered", (fptr - bptr) / 2);
2321 /* Move all backslash-newline pairs out of embarrassing places.
2322 Exchange all such pairs following BP
2323 with any potentially-embarrassing characters that follow them.
2324 Potentially-embarrassing characters are / and *
2325 (because a backslash-newline inside a comment delimiter
2326 would cause it not to be recognized). */
2332 register U_CHAR *p = bp;
2334 /* First count the backslash-newline pairs here. */
2336 while (p[0] == '\\' && p[1] == '\n')
2339 /* What follows the backslash-newlines is not embarrassing. */
2341 if (*p != '/' && *p != '*')
2344 /* Copy all potentially embarrassing characters
2345 that follow the backslash-newline pairs
2346 down to where the pairs originally started. */
2348 while (*p == '*' || *p == '/')
2351 /* Now write the same number of pairs after the embarrassing chars. */
2358 /* Like newline_fix but for use within a directive-name.
2359 Move any backslash-newlines up past any following symbol constituents. */
2362 name_newline_fix (bp)
2365 register U_CHAR *p = bp;
2367 /* First count the backslash-newline pairs here. */
2368 while (p[0] == '\\' && p[1] == '\n')
2371 /* What follows the backslash-newlines is not embarrassing. */
2376 /* Copy all potentially embarrassing characters
2377 that follow the backslash-newline pairs
2378 down to where the pairs originally started. */
2380 while (is_idchar[*p])
2383 /* Now write the same number of pairs after the embarrassing chars. */
2390 /* Look for lint commands in comments.
2392 When we come in here, ibp points into a comment. Limit is as one expects.
2393 scan within the comment -- it should start, after lwsp, with a lint command.
2394 If so that command is returned as a (constant) string.
2396 Upon return, any arg will be pointed to with argstart and will be
2397 arglen long. Note that we don't parse that arg since it will just
2398 be printed out again.
2402 get_lintcmd (ibp, limit, argstart, arglen, cmdlen)
2403 register U_CHAR *ibp;
2404 register U_CHAR *limit;
2405 U_CHAR **argstart; /* point to command arg */
2406 int *arglen, *cmdlen; /* how long they are */
2409 register U_CHAR *numptr; /* temp for arg parsing */
2413 SKIP_WHITE_SPACE (ibp);
2415 if (ibp >= limit) return NULL;
2417 linsize = limit - ibp;
2419 /* Oh, I wish C had lexical functions... hell, I'll just open-code the set */
2420 if ((linsize >= 10) && !strncmp (ibp, "NOTREACHED", 10)) {
2422 return "NOTREACHED";
2424 if ((linsize >= 8) && !strncmp (ibp, "ARGSUSED", 8)) {
2428 if ((linsize >= 11) && !strncmp (ibp, "LINTLIBRARY", 11)) {
2430 return "LINTLIBRARY";
2432 if ((linsize >= 7) && !strncmp (ibp, "VARARGS", 7)) {
2434 ibp += 7; linsize -= 7;
2435 if ((linsize == 0) || ! isdigit (*ibp)) return "VARARGS";
2437 /* OK, read a number */
2438 for (numptr = *argstart = ibp; (numptr < limit) && isdigit (*numptr);
2440 *arglen = numptr - *argstart;
2447 * The main loop of the program.
2449 * Read characters from the input stack, transferring them to the
2452 * Macros are expanded and push levels on the input stack.
2453 * At the end of such a level it is popped off and we keep reading.
2454 * At the end of any other kind of level, we return.
2455 * #-directives are handled, except within macros.
2457 * If OUTPUT_MARKS is nonzero, keep Newline markers found in the input
2458 * and insert them when appropriate. This is set while scanning macro
2459 * arguments before substitution. It is zero when scanning for final output.
2460 * There are three types of Newline markers:
2461 * * Newline - follows a macro name that was not expanded
2462 * because it appeared inside an expansion of the same macro.
2463 * This marker prevents future expansion of that identifier.
2464 * When the input is rescanned into the final output, these are deleted.
2465 * These are also deleted by ## concatenation.
2466 * * Newline Space (or Newline and any other whitespace character)
2467 * stands for a place that tokens must be separated or whitespace
2468 * is otherwise desirable, but where the ANSI standard specifies there
2469 * is no whitespace. This marker turns into a Space (or whichever other
2470 * whitespace char appears in the marker) in the final output,
2471 * but it turns into nothing in an argument that is stringified with #.
2472 * Such stringified arguments are the only place where the ANSI standard
2473 * specifies with precision that whitespace may not appear.
2475 * During this function, IP->bufp is kept cached in IBP for speed of access.
2476 * Likewise, OP->bufp is kept in OBP. Before calling a subroutine
2477 * IBP, IP and OBP must be copied back to memory. IP and IBP are
2478 * copied back with the RECACHE macro. OBP must be copied back from OP->bufp
2479 * explicitly, and before RECACHE, since RECACHE uses OBP.
2483 rescan (op, output_marks)
2487 /* Character being scanned in main loop. */
2490 /* Length of pending accumulated identifier. */
2491 register int ident_length = 0;
2493 /* Hash code of pending accumulated identifier. */
2494 register int hash = 0;
2496 /* Current input level (&instack[indepth]). */
2499 /* Pointer for scanning input. */
2500 register U_CHAR *ibp;
2502 /* Pointer to end of input. End of scan is controlled by LIMIT. */
2503 register U_CHAR *limit;
2505 /* Pointer for storing output. */
2506 register U_CHAR *obp;
2508 /* REDO_CHAR is nonzero if we are processing an identifier
2509 after backing up over the terminating character.
2510 Sometimes we process an identifier without backing up over
2511 the terminating character, if the terminating character
2512 is not special. Backing up is done so that the terminating character
2513 will be dispatched on again once the identifier is dealt with. */
2516 /* 1 if within an identifier inside of which a concatenation
2517 marker (Newline -) has been seen. */
2518 int concatenated = 0;
2520 /* While scanning a comment or a string constant,
2521 this records the line it started on, for error messages. */
2524 /* Record position of last `real' newline. */
2525 U_CHAR *beg_of_line;
2527 /* Pop the innermost input stack level, assuming it is a macro expansion. */
2530 do { ip->macro->type = T_MACRO; \
2531 if (ip->free_ptr) free (ip->free_ptr); \
2532 --indepth; } while (0)
2534 /* Reload `rescan's local variables that describe the current
2535 level of the input stack. */
2538 do { ip = &instack[indepth]; \
2540 limit = ip->buf + ip->length; \
2542 check_expand (op, limit - ibp); \
2544 obp = op->bufp; } while (0)
2546 if (no_output && instack[indepth].fname != 0)
2547 skip_if_group (&instack[indepth], 1, NULL);
2554 /* Our caller must always put a null after the end of
2555 the input at each input stack level. */
2565 if (*ibp == '\n' && !ip->macro) {
2566 /* At the top level, always merge lines ending with backslash-newline,
2567 even in middle of identifier. But do not merge lines in a macro,
2568 since backslash might be followed by a newline-space marker. */
2571 --obp; /* remove backslash from obuf */
2574 /* If ANSI, backslash is just another character outside a string. */
2577 /* Otherwise, backslash suppresses specialness of following char,
2578 so copy it here to prevent the switch from seeing it.
2579 But first get any pending identifier processed. */
2580 if (ident_length > 0)
2587 if (ident_length || ip->macro || traditional)
2589 if (ip->fname == 0 && beg_of_line == ip->buf)
2591 while (*ibp == '\\' && ibp[1] == '\n') {
2597 /* Treat this %: digraph as if it were #. */
2601 if (assertions_flag) {
2602 /* Copy #foo (bar lose) without macro expansion. */
2603 obp[-1] = '#'; /* In case it was '%'. */
2604 SKIP_WHITE_SPACE (ibp);
2605 while (is_idchar[*ibp])
2607 SKIP_WHITE_SPACE (ibp);
2610 skip_paren_group (ip);
2611 bcopy ((char *) ibp, (char *) obp, ip->bufp - ibp);
2612 obp += ip->bufp - ibp;
2617 /* If this is expanding a macro definition, don't recognize
2618 preprocessor directives. */
2621 /* If this is expand_into_temp_buffer, recognize them
2622 only after an actual newline at this level,
2623 not at the beginning of the input level. */
2624 if (ip->fname == 0 && beg_of_line == ip->buf)
2630 /* # keyword: a # must be first nonblank char on the line */
2631 if (beg_of_line == 0)
2636 /* Scan from start of line, skipping whitespace, comments
2637 and backslash-newlines, and see if we reach this #.
2638 If not, this # is not special. */
2640 /* If -traditional, require # to be at beginning of line. */
2643 if (is_hor_space[*bp])
2645 else if (*bp == '\\' && bp[1] == '\n')
2647 else if (*bp == '/' && bp[1] == '*') {
2649 while (!(*bp == '*' && bp[1] == '/'))
2653 /* There is no point in trying to deal with C++ // comments here,
2654 because if there is one, then this # must be part of the
2655 comment and we would never reach here. */
2661 while (bp[1] == '\\' && bp[2] == '\n')
2665 /* %: appears at start of line; skip past the ':' too. */
2674 /* This # can start a directive. */
2676 --obp; /* Don't copy the '#' */
2680 if (! handle_directive (ip, op)) {
2684 /* Not a known directive: treat it as ordinary text.
2685 IP, OP, IBP, etc. have not been changed. */
2686 if (no_output && instack[indepth].fname) {
2687 /* If not generating expanded output,
2688 what we do with ordinary text is skip it.
2689 Discard everything until next # directive. */
2690 skip_if_group (&instack[indepth], 1, 0);
2695 *obp++ = '#'; /* Copy # (even if it was originally %:). */
2696 /* Don't expand an identifier that could be a macro directive.
2697 (Section 3.8.3 of the ANSI C standard) */
2698 SKIP_WHITE_SPACE (ibp);
2699 if (is_idstart[*ibp])
2702 while (is_idchar[*ibp])
2710 /* A # directive has been successfully processed. */
2711 /* If not generating expanded output, ignore everything until
2712 next # directive. */
2713 if (no_output && instack[indepth].fname)
2714 skip_if_group (&instack[indepth], 1, 0);
2720 case '\"': /* skip quoted string */
2722 /* A single quoted string is treated like a double -- some
2723 programs (e.g., troff) are perverse this way */
2728 start_line = ip->lineno;
2730 /* Skip ahead to a matching quote. */
2734 if (ip->macro != 0) {
2735 /* try harder: this string crosses a macro expansion boundary.
2736 This can happen naturally if -traditional.
2737 Otherwise, only -D can make a macro with an unmatched quote. */
2743 error_with_line (line_for_error (start_line),
2744 "unterminated string or character constant");
2745 error_with_line (multiline_string_line,
2746 "possible real start of unterminated constant");
2747 multiline_string_line = 0;
2756 /* Traditionally, end of line ends a string constant with no error.
2757 So exit the loop and record the new line. */
2763 error_with_line (line_for_error (start_line),
2764 "unterminated character constant");
2767 if (pedantic && multiline_string_line == 0) {
2768 pedwarn_with_line (line_for_error (start_line),
2769 "string constant runs past end of line");
2771 if (multiline_string_line == 0)
2772 multiline_string_line = ip->lineno - 1;
2779 /* Backslash newline is replaced by nothing at all,
2780 but keep the line counts correct. */
2785 /* ANSI stupidly requires that in \\ the second \
2786 is *not* prevented from combining with a newline. */
2787 while (*ibp == '\\' && ibp[1] == '\n') {
2806 if (*ibp == '\\' && ibp[1] == '\n')
2810 && !(cplusplus_comments && *ibp == '/'))
2818 /* C++ style comment... */
2819 start_line = ip->lineno;
2821 --ibp; /* Back over the slash */
2824 /* Comments are equivalent to spaces. */
2825 if (! put_out_comments)
2828 /* must fake up a comment here */
2833 U_CHAR *before_bp = ibp+2;
2835 while (ibp < limit) {
2836 if (ibp[-1] != '\\' && *ibp == '\n') {
2837 if (put_out_comments) {
2838 bcopy ((char *) before_bp, (char *) obp, ibp - before_bp);
2839 obp += ibp - before_bp;
2845 /* Copy the newline into the output buffer, in order to
2846 avoid the pain of a #line every time a multiline comment
2848 if (!put_out_comments)
2859 /* Ordinary C comment. Skip it, optionally copying it to output. */
2861 start_line = ip->lineno;
2863 ++ibp; /* Skip the star. */
2865 /* If this cpp is for lint, we peek inside the comments: */
2869 char *lintcmd = get_lintcmd (ibp, limit, &argbp, &arglen, &cmdlen);
2871 if (lintcmd != NULL) {
2873 check_expand (op, cmdlen + arglen + 14);
2875 /* I believe it is always safe to emit this newline: */
2877 bcopy ("#pragma lint ", (char *) obp, 13);
2879 bcopy (lintcmd, (char *) obp, cmdlen);
2884 bcopy (argbp, (char *) obp, arglen);
2888 /* OK, now bring us back to the state we were in before we entered
2889 this branch. We need #line because the #pragma's newline always
2890 messes up the line count. */
2892 output_line_command (ip, op, 0, same_file);
2893 check_expand (op, limit - ibp + 2);
2899 /* Comments are equivalent to spaces.
2900 Note that we already output the slash; we might not want it.
2901 For -traditional, a comment is equivalent to nothing. */
2902 if (! put_out_comments) {
2912 U_CHAR *before_bp = ibp;
2914 while (ibp < limit) {
2917 if (warn_comments && *ibp == '*')
2918 warning ("`/*' within comment");
2921 if (*ibp == '\\' && ibp[1] == '\n')
2923 if (ibp >= limit || *ibp == '/')
2928 /* Copy the newline into the output buffer, in order to
2929 avoid the pain of a #line every time a multiline comment
2931 if (!put_out_comments)
2939 error_with_line (line_for_error (start_line),
2940 "unterminated comment");
2943 if (put_out_comments) {
2944 bcopy ((char *) before_bp, (char *) obp, ibp - before_bp);
2945 obp += ibp - before_bp;
2952 if (!dollars_in_ident)
2956 case '0': case '1': case '2': case '3': case '4':
2957 case '5': case '6': case '7': case '8': case '9':
2958 /* If digit is not part of identifier, it starts a number,
2959 which means that following letters are not an identifier.
2960 "0x5" does not refer to an identifier "x5".
2961 So copy all alphanumerics that follow without accumulating
2962 as an identifier. Periods also, for sake of "3.e7". */
2964 if (ident_length == 0) {
2966 while (ibp[0] == '\\' && ibp[1] == '\n') {
2971 if (!is_idchar[c] && c != '.') {
2976 /* A sign can be part of a preprocessing number
2977 if it follows an e. */
2978 if (c == 'e' || c == 'E') {
2979 while (ibp[0] == '\\' && ibp[1] == '\n') {
2983 if (*ibp == '+' || *ibp == '-') {
2985 /* But traditional C does not let the token go past the sign. */
2996 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
2997 case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
2998 case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
2999 case 's': case 't': case 'u': case 'v': case 'w': case 'x':
3001 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
3002 case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
3003 case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
3004 case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
3008 /* Compute step of hash function, to avoid a proc call on every token */
3009 hash = HASHSTEP (hash, c);
3013 if (ip->fname == 0 && *ibp == '-') {
3014 /* Newline - inhibits expansion of preceding token.
3015 If expanding a macro arg, we keep the newline -.
3016 In final output, it is deleted.
3017 We recognize Newline - in macro bodies and macro args. */
3018 if (! concatenated) {
3023 if (!output_marks) {
3026 /* If expanding a macro arg, keep the newline -. */
3032 /* If reprocessing a macro expansion, newline is a special marker. */
3033 else if (ip->macro != 0) {
3034 /* Newline White is a "funny space" to separate tokens that are
3035 supposed to be separate but without space between.
3036 Here White means any whitespace character.
3037 Newline - marks a recursive macro use that is not
3038 supposed to be expandable. */
3040 if (is_space[*ibp]) {
3041 /* Newline Space does not prevent expansion of preceding token
3042 so expand the preceding token and then come back. */
3043 if (ident_length > 0)
3046 /* If generating final output, newline space makes a space. */
3047 if (!output_marks) {
3049 /* And Newline Newline makes a newline, so count it. */
3050 if (obp[-1] == '\n')
3053 /* If expanding a macro arg, keep the newline space.
3054 If the arg gets stringified, newline space makes nothing. */
3057 } else abort (); /* Newline followed by something random? */
3061 /* If there is a pending identifier, handle it and come back here. */
3062 if (ident_length > 0)
3067 /* Update the line counts and output a #line if necessary. */
3070 if (ip->lineno != op->lineno) {
3072 output_line_command (ip, op, 1, same_file);
3073 check_expand (op, limit - ibp);
3078 /* Come here either after (1) a null character that is part of the input
3079 or (2) at the end of the input, because there is a null there. */
3082 /* Our input really contains a null character. */
3085 /* At end of a macro-expansion level, pop it and read next level. */
3086 if (ip->macro != 0) {
3089 /* If traditional, and we have an identifier that ends here,
3090 process it now, so we get the right error for recursion. */
3091 if (traditional && ident_length
3092 && ! is_idchar[*instack[indepth - 1].bufp]) {
3101 /* If we don't have a pending identifier,
3102 return at end of input. */
3103 if (ident_length == 0) {
3111 /* If we do have a pending identifier, just consider this null
3112 a special character and arrange to dispatch on it again.
3113 The second time, IDENT_LENGTH will be zero so we will return. */
3119 /* Handle the case of a character such as /, ', " or null
3120 seen following an identifier. Back over it so that
3121 after the identifier is processed the special char
3122 will be dispatched on again. */
3132 if (ident_length > 0) {
3133 register HASHNODE *hp;
3135 /* We have just seen an identifier end. If it's a macro, expand it.
3137 IDENT_LENGTH is the length of the identifier
3138 and HASH is its hash code.
3140 The identifier has already been copied to the output,
3141 so if it is a macro we must remove it.
3143 If REDO_CHAR is 0, the char that terminated the identifier
3144 has been skipped in the output and the input.
3145 OBP-IDENT_LENGTH-1 points to the identifier.
3146 If the identifier is a macro, we must back over the terminator.
3148 If REDO_CHAR is 1, the terminating char has already been
3149 backed over. OBP-IDENT_LENGTH points to the identifier. */
3151 if (!pcp_outfile || pcp_inside_if) {
3153 for (hp = hashtab[MAKE_POS (hash) % HASHSIZE]; hp != NULL;
3156 if (hp->length == ident_length) {
3157 int obufp_before_macroname;
3158 int op_lineno_before_macroname;
3159 register int i = ident_length;
3160 register U_CHAR *p = hp->name;
3161 register U_CHAR *q = obp - i;
3167 do { /* All this to avoid a strncmp () */
3172 /* We found a use of a macro name.
3173 see if the context shows it is a macro call. */
3175 /* Back up over terminating character if not already done. */
3181 /* Save this as a displacement from the beginning of the output
3182 buffer. We can not save this as a position in the output
3183 buffer, because it may get realloc'ed by RECACHE. */
3184 obufp_before_macroname = (obp - op->buf) - ident_length;
3185 op_lineno_before_macroname = op->lineno;
3187 if (hp->type == T_PCSTRING) {
3188 pcstring_used (hp); /* Mark the definition of this key
3189 as needed, ensuring that it
3191 break; /* Exit loop, since the key cannot have a
3192 definition any longer. */
3195 /* Record whether the macro is disabled. */
3196 disabled = hp->type == T_DISABLED;
3198 /* This looks like a macro ref, but if the macro was disabled,
3199 just copy its name and put in a marker if requested. */
3203 /* This error check caught useful cases such as
3204 #define foo(x,y) bar (x (y,0), y)
3207 error ("recursive use of macro `%s'", hp->name);
3211 check_expand (op, limit - ibp + 2);
3218 /* If macro wants an arglist, verify that a '(' follows.
3219 first skip all whitespace, copying it to the output
3220 after the macro name. Then, if there is no '(',
3221 decide this is not a macro call and leave things that way. */
3222 if ((hp->type == T_MACRO || hp->type == T_DISABLED)
3223 && hp->value.defn->nargs >= 0)
3225 U_CHAR *old_ibp = ibp;
3226 U_CHAR *old_obp = obp;
3227 int old_iln = ip->lineno;
3228 int old_oln = op->lineno;
3231 /* Scan forward over whitespace, copying it to the output. */
3232 if (ibp == limit && ip->macro != 0) {
3237 old_iln = ip->lineno;
3238 old_oln = op->lineno;
3240 /* A comment: copy it unchanged or discard it. */
3241 else if (*ibp == '/' && ibp[1] == '*') {
3242 if (put_out_comments) {
3245 } else if (! traditional) {
3249 while (ibp + 1 != limit
3250 && !(ibp[0] == '*' && ibp[1] == '/')) {
3251 /* We need not worry about newline-marks,
3252 since they are never found in comments. */
3254 /* Newline in a file. Count it. */
3258 if (put_out_comments)
3264 if (put_out_comments) {
3269 else if (is_space[*ibp]) {
3271 if (ibp[-1] == '\n') {
3272 if (ip->macro == 0) {
3273 /* Newline in a file. Count it. */
3276 } else if (!output_marks) {
3277 /* A newline mark, and we don't want marks
3278 in the output. If it is newline-hyphen,
3279 discard it entirely. Otherwise, it is
3280 newline-whitechar, so keep the whitechar. */
3290 /* A newline mark; copy both chars to the output. */
3298 /* It isn't a macro call.
3299 Put back the space that we just skipped. */
3302 ip->lineno = old_iln;
3303 op->lineno = old_oln;
3304 /* Exit the for loop. */
3309 /* This is now known to be a macro call.
3310 Discard the macro name from the output,
3311 along with any following whitespace just copied,
3312 but preserve newlines if not outputting marks since this
3313 is more likely to do the right thing with line numbers. */
3314 obp = op->buf + obufp_before_macroname;
3316 op->lineno = op_lineno_before_macroname;
3318 int newlines = op->lineno - op_lineno_before_macroname;
3319 while (0 < newlines--)
3323 /* Prevent accidental token-pasting with a character
3324 before the macro call. */
3325 if (!traditional && obp != op->buf) {
3327 case '!': case '%': case '&': case '*':
3328 case '+': case '-': case '/': case ':':
3329 case '<': case '=': case '>': case '^':
3331 /* If we are expanding a macro arg, make a newline marker
3332 to separate the tokens. If we are making real output,
3333 a plain space will do. */
3340 /* Expand the macro, reading arguments as needed,
3341 and push the expansion on the input stack. */
3344 macroexpand (hp, op);
3346 /* Reexamine input stack, since macroexpand has pushed
3347 a new level on it. */
3354 } /* End hash-table-search loop */
3356 ident_length = hash = 0; /* Stop collecting identifier */
3359 } /* End if (ident_length > 0) */
3361 } /* End per-char loop */
3363 /* Come here to return -- but first give an error message
3364 if there was an unterminated successful conditional. */
3366 if (if_stack != ip->if_stack)
3368 char *str = "unknown";
3370 switch (if_stack->type)
3389 error_with_line (line_for_error (if_stack->lineno),
3390 "unterminated `#%s' conditional", str);
3392 if_stack = ip->if_stack;
3396 * Rescan a string into a temporary buffer and return the result
3397 * as a FILE_BUF. Note this function returns a struct, not a pointer.
3399 * OUTPUT_MARKS nonzero means keep Newline markers found in the input
3400 * and insert such markers when appropriate. See `rescan' for details.
3401 * OUTPUT_MARKS is 1 for macroexpanding a macro argument separately
3402 * before substitution; it is 0 for other uses.
3405 expand_to_temp_buffer (buf, limit, output_marks, assertions)
3406 U_CHAR *buf, *limit;
3407 int output_marks, assertions;
3409 register FILE_BUF *ip;
3411 int length = limit - buf;
3413 int odepth = indepth;
3414 int save_assertions_flag = assertions_flag;
3416 assertions_flag = assertions;
3421 /* Set up the input on the input stack. */
3423 buf1 = (U_CHAR *) alloca (length + 1);
3425 register U_CHAR *p1 = buf;
3426 register U_CHAR *p2 = buf1;
3433 /* Set up to receive the output. */
3435 obuf.length = length * 2 + 100; /* Usually enough. Why be stingy? */
3436 obuf.bufp = obuf.buf = (U_CHAR *) xmalloc (obuf.length);
3441 CHECK_DEPTH ({return obuf;});
3445 ip = &instack[indepth];
3447 ip->nominal_fname = 0;
3448 ip->system_header_p = 0;
3451 ip->length = length;
3452 ip->buf = ip->bufp = buf1;
3453 ip->if_stack = if_stack;
3455 ip->lineno = obuf.lineno = 1;
3457 /* Scan the input, create the output. */
3458 rescan (&obuf, output_marks);
3460 /* Pop input stack to original state. */
3463 if (indepth != odepth)
3466 /* Record the output. */
3467 obuf.length = obuf.bufp - obuf.buf;
3469 assertions_flag = save_assertions_flag;
3474 * Process a # directive. Expects IP->bufp to point after the '#', as in
3475 * `#define foo bar'. Passes to the command handler
3476 * (do_define, do_include, etc.): the addresses of the 1st and
3477 * last chars of the command (starting immediately after the #
3478 * keyword), plus op and the keyword table pointer. If the command
3479 * contains comments it is copied into a temporary buffer sans comments
3480 * and the temporary buffer is passed to the command handler instead.
3481 * Likewise for backslash-newlines.
3483 * Returns nonzero if this was a known # directive.
3484 * Otherwise, returns zero, without advancing the input pointer.
3488 handle_directive (ip, op)
3491 register U_CHAR *bp, *cp;
3492 register struct directive *kt;
3493 register int ident_length;
3496 /* Nonzero means we must copy the entire command
3497 to get rid of comments or backslash-newlines. */
3498 int copy_command = 0;
3500 U_CHAR *ident, *after_ident;
3504 /* Record where the directive started. do_xifdef needs this. */
3505 directive_start = bp - 1;
3507 /* Skip whitespace and \-newline. */
3509 if (is_hor_space[*bp]) {
3510 if (*bp != ' ' && *bp != '\t' && pedantic)
3511 pedwarn ("%s in preprocessing directive", char_name[*bp]);
3513 } else if (*bp == '/' && (bp[1] == '*'
3514 || (cplusplus_comments && bp[1] == '/'))) {
3516 skip_to_end_of_comment (ip, &ip->lineno, 0);
3518 } else if (*bp == '\\' && bp[1] == '\n') {
3519 bp += 2; ip->lineno++;
3523 /* Now find end of directive name.
3524 If we encounter a backslash-newline, exchange it with any following
3525 symbol-constituents so that we end up with a contiguous name. */
3532 if (*cp == '\\' && cp[1] == '\n')
3533 name_newline_fix (cp);
3539 ident_length = cp - bp;
3543 /* A line of just `#' becomes blank. */
3545 if (ident_length == 0 && *after_ident == '\n') {
3546 ip->bufp = after_ident;
3550 if (ident_length == 0 || !is_idstart[*ident]) {
3552 while (is_idchar[*p]) {
3553 if (*p < '0' || *p > '9')
3557 /* Handle # followed by a line number. */
3558 if (p != ident && !is_idchar[*p]) {
3559 static struct directive line_directive_table[] = {
3560 { 4, do_line, "line", T_LINE},
3563 pedwarn ("`#' followed by integer");
3564 after_ident = ident;
3565 kt = line_directive_table;
3569 /* Avoid error for `###' and similar cases unless -pedantic. */
3571 while (*p == '#' || is_hor_space[*p]) p++;
3573 if (pedantic && !lang_asm)
3574 warning ("invalid preprocessor directive");
3580 error ("invalid preprocessor directive name");
3586 * Decode the keyword and call the appropriate expansion
3587 * routine, after moving the input pointer up to the next line.
3589 for (kt = directive_table; kt->length > 0; kt++) {
3590 if (kt->length == ident_length && !strncmp (kt->name, ident, ident_length)) {
3591 register U_CHAR *buf;
3592 register U_CHAR *limit;
3595 int *already_output;
3597 /* Nonzero means do not delete comments within the directive.
3598 #define needs this when -traditional. */
3603 limit = ip->buf + ip->length;
3606 keep_comments = traditional && kt->traditional_comments;
3607 /* #import is defined only in Objective C, or when on the NeXT. */
3608 if (kt->type == T_IMPORT && !(objc || lookup ("__NeXT__", -1, -1)))
3611 /* Find the end of this command (first newline not backslashed
3612 and not in a string or comment).
3613 Set COPY_COMMAND if the command must be copied
3614 (it contains a backslash-newline or a comment). */
3616 buf = bp = after_ident;
3617 while (bp < limit) {
3618 register U_CHAR c = *bp++;
3626 } else if (traditional)
3633 bp = skip_quoted_string (bp - 1, limit, ip->lineno, &ip->lineno, ©_command, &unterminated);
3634 /* Don't bother calling the directive if we already got an error
3635 message due to unterminated string. Skip everything and pretend
3636 we called the directive. */
3639 /* Traditional preprocessing permits unterminated strings. */
3648 /* <...> is special for #include. */
3650 if (!kt->angle_brackets)
3652 while (bp < limit && *bp != '>' && *bp != '\n') {
3653 if (*bp == '\\' && bp[1] == '\n') {
3663 if (*bp == '\\' && bp[1] == '\n')
3666 || (cplusplus_comments && *bp == '/')) {
3667 U_CHAR *obp = bp - 1;
3669 skip_to_end_of_comment (ip, &ip->lineno, 0);
3671 /* No need to copy the command because of a comment at the end;
3672 just don't include the comment in the directive. */
3673 if (bp == limit || *bp == '\n') {
3677 /* Don't remove the comments if -traditional. */
3678 if (! keep_comments)
3687 pedwarn ("%s in preprocessing directive", char_name[c]);
3691 --bp; /* Point to the newline */
3699 resume_p = ip->bufp;
3700 /* BP is the end of the directive.
3701 RESUME_P is the next interesting data after the directive.
3702 A comment may come between. */
3704 /* If a directive should be copied through, and -E was given,
3705 pass it through before removing comments. */
3706 if (!no_output && kt->pass_thru && put_out_comments) {
3709 /* Output directive name. */
3710 check_expand (op, kt->length + 2);
3711 /* Make sure # is at the start of a line */
3712 if (op->bufp > op->buf && op->bufp[-1] != '\n') {
3717 bcopy (kt->name, op->bufp, kt->length);
3718 op->bufp += kt->length;
3720 /* Output arguments. */
3722 check_expand (op, len);
3723 bcopy (buf, (char *) op->bufp, len);
3725 /* Take account of any (escaped) newlines just output. */
3727 if (buf[len] == '\n')
3730 already_output = &junk;
3731 } /* Don't we need a newline or #line? */
3734 register U_CHAR *xp = buf;
3735 /* Need to copy entire command into temp buffer before dispatching */
3737 cp = (U_CHAR *) alloca (bp - buf + 5); /* room for cmd plus
3741 /* Copy to the new buffer, deleting comments
3742 and backslash-newlines (and whitespace surrounding the latter). */
3745 register U_CHAR c = *xp++;
3750 abort (); /* A bare newline should never part of the line. */
3753 /* <...> is special for #include. */
3755 if (!kt->angle_brackets)
3757 while (xp < bp && c != '>') {
3759 if (c == '\\' && xp < bp && *xp == '\n')
3770 if (cp != buf && is_space[cp[-1]]) {
3771 while (cp != buf && is_space[cp[-1]]) cp--;
3773 SKIP_WHITE_SPACE (xp);
3774 } else if (is_space[*xp]) {
3776 SKIP_WHITE_SPACE (xp);
3778 } else if (traditional && xp < bp) {
3786 register U_CHAR *bp1
3787 = skip_quoted_string (xp - 1, bp, ip->lineno,
3788 NULL_PTR, NULL_PTR, NULL_PTR);
3802 || (cplusplus_comments && *xp == '/')) {
3804 /* If we already copied the command through,
3805 already_output != 0 prevents outputting comment now. */
3806 skip_to_end_of_comment (ip, already_output, 0);
3808 while (xp != ip->bufp)
3810 /* Delete or replace the slash. */
3811 else if (traditional)
3820 /* Null-terminate the copy. */
3826 ip->bufp = resume_p;
3828 /* Some directives should be written out for cc1 to process,
3829 just as if they were not defined. And sometimes we're copying
3830 definitions through. */
3832 if (!no_output && already_output == 0
3834 || (kt->type == T_DEFINE
3835 && (dump_macros == dump_names
3836 || dump_macros == dump_definitions)))) {
3839 /* Output directive name. */
3840 check_expand (op, kt->length + 1);
3842 bcopy (kt->name, (char *) op->bufp, kt->length);
3843 op->bufp += kt->length;
3845 if (kt->pass_thru || dump_macros == dump_definitions) {
3846 /* Output arguments. */
3848 check_expand (op, len);
3849 bcopy (buf, (char *) op->bufp, len);
3851 } else if (kt->type == T_DEFINE && dump_macros == dump_names) {
3854 SKIP_WHITE_SPACE (xp);
3856 while (is_idchar[*xp]) xp++;
3858 check_expand (op, len + 1);
3860 bcopy (yp, op->bufp, len);
3863 } /* Don't we need a newline or #line? */
3865 /* Call the appropriate command handler. buf now points to
3866 either the appropriate place in the input buffer, or to
3867 the temp buffer if it was necessary to make one. cp
3868 points to the first char after the contents of the (possibly
3869 copied) command, in either case. */
3870 (*kt->func) (buf, cp, op, kt);
3871 check_expand (op, ip->length - (ip->bufp - ip->buf));
3877 /* It is deliberate that we don't warn about undefined directives.
3878 That is the responsibility of cc1. */
3885 static struct tm *timebuf;
3887 time_t t = time ((time_t *)0);
3888 timebuf = localtime (&t);
3893 static char *monthnames[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
3894 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
3898 * expand things like __FILE__. Place the expansion into the output
3899 * buffer *without* rescanning.
3903 special_symbol (hp, op)
3910 FILE_BUF *ip = NULL;
3913 int paren = 0; /* For special `defined' keyword */
3915 if (pcp_outfile && pcp_inside_if
3916 && hp->type != T_SPEC_DEFINED && hp->type != T_CONST)
3917 error ("Predefined macro `%s' used inside `#if' during precompilation",
3920 for (i = indepth; i >= 0; i--)
3921 if (instack[i].fname != NULL) {
3926 error ("cccp error: not in any file?!");
3927 return; /* the show must go on */
3935 if (hp->type == T_FILE)
3936 string = ip->nominal_fname;
3938 string = instack[0].nominal_fname;
3942 buf = (char *) alloca (3 + 4 * strlen (string));
3943 quote_string (buf, string);
3951 case T_INCLUDE_LEVEL:
3953 for (i = indepth; i >= 0; i--)
3954 if (instack[i].fname != NULL)
3957 buf = (char *) alloca (8); /* Eight bytes ought to be more than enough */
3958 sprintf (buf, "%d", true_indepth - 1);
3962 buf = (char *) alloca (3 + strlen (version_string));
3963 sprintf (buf, "\"%s\"", version_string);
3966 #ifndef NO_BUILTIN_SIZE_TYPE
3972 #ifndef NO_BUILTIN_PTRDIFF_TYPE
3973 case T_PTRDIFF_TYPE:
3982 case T_USER_LABEL_PREFIX_TYPE:
3983 buf = USER_LABEL_PREFIX;
3986 case T_REGISTER_PREFIX_TYPE:
3987 buf = REGISTER_PREFIX;
3991 buf = hp->value.cpval;
3992 if (pcp_inside_if && pcp_outfile)
3993 /* Output a precondition for this macro use */
3994 fprintf (pcp_outfile, "#define %s %s\n", hp->name, buf);
3998 buf = (char *) alloca (10);
3999 sprintf (buf, "%d", ip->lineno);
4004 buf = (char *) alloca (20);
4005 timebuf = timestamp ();
4006 if (hp->type == T_DATE)
4007 sprintf (buf, "\"%s %2d %4d\"", monthnames[timebuf->tm_mon],
4008 timebuf->tm_mday, timebuf->tm_year + 1900);
4010 sprintf (buf, "\"%02d:%02d:%02d\"", timebuf->tm_hour, timebuf->tm_min,
4014 case T_SPEC_DEFINED:
4015 buf = " 0 "; /* Assume symbol is not defined */
4016 ip = &instack[indepth];
4017 SKIP_WHITE_SPACE (ip->bufp);
4018 if (*ip->bufp == '(') {
4020 ip->bufp++; /* Skip over the paren */
4021 SKIP_WHITE_SPACE (ip->bufp);
4024 if (!is_idstart[*ip->bufp])
4026 if (hp = lookup (ip->bufp, -1, -1)) {
4027 if (pcp_outfile && pcp_inside_if
4028 && (hp->type == T_CONST
4029 || (hp->type == T_MACRO && hp->value.defn->predefined)))
4030 /* Output a precondition for this macro use. */
4031 fprintf (pcp_outfile, "#define %s\n", hp->name);
4035 if (pcp_outfile && pcp_inside_if) {
4036 /* Output a precondition for this macro use */
4037 U_CHAR *cp = ip->bufp;
4038 fprintf (pcp_outfile, "#undef ");
4039 while (is_idchar[*cp]) /* Ick! */
4040 fputc (*cp++, pcp_outfile);
4041 putc ('\n', pcp_outfile);
4043 while (is_idchar[*ip->bufp])
4045 SKIP_WHITE_SPACE (ip->bufp);
4047 if (*ip->bufp != ')')
4055 error ("`defined' without an identifier");
4059 error ("cccp error: invalid special hash type"); /* time for gdb */
4063 check_expand (op, len);
4064 bcopy (buf, (char *) op->bufp, len);
4071 /* Routines to handle #directives */
4073 /* Handle #include and #import.
4074 This function expects to see "fname" or <fname> on the input. */
4077 do_include (buf, limit, op, keyword)
4078 U_CHAR *buf, *limit;
4080 struct directive *keyword;
4082 int importing = (keyword->type == T_IMPORT);
4083 int skip_dirs = (keyword->type == T_INCLUDE_NEXT);
4084 static int import_warning = 0;
4085 char *fname; /* Dynamically allocated fname buffer */
4088 U_CHAR *fbeg, *fend; /* Beginning and end of fname */
4090 struct file_name_list *search_start = include; /* Chain of dirs to search */
4091 struct file_name_list dsp[1]; /* First in chain, if #include "..." */
4092 struct file_name_list *searchptr = 0;
4095 int f; /* file number */
4097 int retried = 0; /* Have already tried macro
4098 expanding the include line*/
4099 int angle_brackets = 0; /* 0 for "...", 1 for <...> */
4104 f= -1; /* JF we iz paranoid! */
4106 if (importing && warn_import && !inhibit_warnings
4107 && !instack[indepth].system_header_p && !import_warning) {
4109 warning ("using `#import' is not recommended");
4110 fprintf (stderr, "The fact that a certain header file need not be processed more than once\n");
4111 fprintf (stderr, "should be indicated in the header file, not where it is used.\n");
4112 fprintf (stderr, "The best way to do this is with a conditional of this form:\n\n");
4113 fprintf (stderr, " #ifndef _FOO_H_INCLUDED\n");
4114 fprintf (stderr, " #define _FOO_H_INCLUDED\n");
4115 fprintf (stderr, " ... <real contents of file> ...\n");
4116 fprintf (stderr, " #endif /* Not _FOO_H_INCLUDED */\n\n");
4117 fprintf (stderr, "Then users can use `#include' any number of times.\n");
4118 fprintf (stderr, "GNU C automatically avoids processing the file more than once\n");
4119 fprintf (stderr, "when it is equipped with such a conditional.\n");
4125 SKIP_WHITE_SPACE (fbeg);
4126 /* Discard trailing whitespace so we can easily see
4127 if we have parsed all the significant chars we were given. */
4128 while (limit != fbeg && is_hor_space[limit[-1]]) limit--;
4134 /* Copy the operand text, concatenating the strings. */
4137 fbeg = (U_CHAR *) alloca (limit - fbeg + 1);
4139 while (fin != limit) {
4140 while (fin != limit && *fin != '\"')
4145 /* If not at the end, there had better be another string. */
4146 /* Skip just horiz space, and don't go past limit. */
4147 while (fin != limit && is_hor_space[*fin]) fin++;
4148 if (fin != limit && *fin == '\"')
4156 /* We have "filename". Figure out directory this source
4157 file is coming from and put it on the front of the list. */
4159 /* If -I- was specified, don't search current dir, only spec'd ones. */
4160 if (ignore_srcdir) break;
4162 for (fp = &instack[indepth]; fp >= instack; fp--)
4167 if ((nam = fp->nominal_fname) != NULL) {
4168 /* Found a named file. Figure out dir of the file,
4169 and put it in front of the search list. */
4170 dsp[0].next = search_start;
4173 ep = rindex (nam, '/');
4174 #ifdef DIR_SEPARATOR
4175 if (ep == NULL) ep = rindex (nam, DIR_SEPARATOR);
4177 char *tmp = rindex (nam, DIR_SEPARATOR);
4178 if (tmp != NULL && tmp > ep) ep = tmp;
4182 ep = rindex (nam, ']');
4183 if (ep == NULL) ep = rindex (nam, '>');
4184 if (ep == NULL) ep = rindex (nam, ':');
4185 if (ep != NULL) ep++;
4189 dsp[0].fname = (char *) alloca (n + 1);
4190 strncpy (dsp[0].fname, nam, n);
4191 dsp[0].fname[n] = '\0';
4192 if (n + INCLUDE_LEN_FUDGE > max_include_len)
4193 max_include_len = n + INCLUDE_LEN_FUDGE;
4195 dsp[0].fname = 0; /* Current directory */
4197 dsp[0].got_name_map = 0;
4206 while (fend != limit && *fend != '>') fend++;
4207 if (*fend == '>' && fend + 1 == limit) {
4209 /* If -I-, start with the first -I dir after the -I-. */
4210 if (first_bracket_include)
4211 search_start = first_bracket_include;
4219 * Support '#include xyz' like VAX-C to allow for easy use of all the
4220 * decwindow include files. It defaults to '#include <xyz.h>' (so the
4221 * code from case '<' is repeated here) and generates a warning.
4222 * (Note: macro expansion of `xyz' takes precedence.)
4224 if (retried && isalpha(*(--fbeg))) {
4226 while (fend != limit && (!isspace(*fend))) fend++;
4227 warning ("VAX-C-style include specification found, use '#include <filename.h>' !");
4228 if (fend == limit) {
4230 /* If -I-, start with the first -I dir after the -I-. */
4231 if (first_bracket_include)
4232 search_start = first_bracket_include;
4240 error ("`#%s' expects \"FILENAME\" or <FILENAME>", keyword->name);
4243 /* Expand buffer and then remove any newline markers.
4244 We can't just tell expand_to_temp_buffer to omit the markers,
4245 since it would put extra spaces in include file names. */
4248 trybuf = expand_to_temp_buffer (buf, limit, 1, 0);
4250 buf = (U_CHAR *) alloca (trybuf.bufp - trybuf.buf + 1);
4252 while (src != trybuf.bufp) {
4253 switch ((*limit++ = *src++)) {
4262 U_CHAR *src1 = skip_quoted_string (src - 1, trybuf.bufp, 0,
4263 NULL_PTR, NULL_PTR, NULL_PTR);
4277 /* For #include_next, skip in the search path
4278 past the dir in which the containing file was found. */
4281 for (fp = &instack[indepth]; fp >= instack; fp--)
4282 if (fp->fname != NULL) {
4283 /* fp->dir is null if the containing file was specified
4284 with an absolute file name. In that case, don't skip anything. */
4286 search_start = fp->dir->next;
4295 error ("empty file name in `#%s'", keyword->name);
4299 /* Allocate this permanently, because it gets stored in the definitions
4301 fname = (char *) xmalloc (max_include_len + flen + 4);
4302 /* + 2 above for slash and terminating null. */
4303 /* + 2 added for '.h' on VMS (to support '#include filename') */
4305 /* If specified file name is absolute, just open it. */
4308 #ifdef DIR_SEPARATOR
4309 || *fbeg == DIR_SEPARATOR
4312 strncpy (fname, fbeg, flen);
4314 if (redundant_include_p (fname))
4317 f = lookup_import (fname, NULL_PTR);
4319 f = open_include_file (fname, NULL_PTR);
4321 return 0; /* Already included this file */
4323 /* Search directory path, trying to open the file.
4324 Copy each filename tried into FNAME. */
4326 for (searchptr = search_start; searchptr; searchptr = searchptr->next) {
4327 if (searchptr->fname) {
4328 /* The empty string in a search path is ignored.
4329 This makes it possible to turn off entirely
4330 a standard piece of the list. */
4331 if (searchptr->fname[0] == 0)
4333 strcpy (fname, searchptr->fname);
4334 strcat (fname, "/");
4335 fname[strlen (fname) + flen] = 0;
4339 strncat (fname, fbeg, flen);
4341 /* Change this 1/2 Unix 1/2 VMS file specification into a
4342 full VMS file specification */
4343 if (searchptr->fname && (searchptr->fname[0] != 0)) {
4344 /* Fix up the filename */
4345 hack_vms_include_specification (fname);
4347 /* This is a normal VMS filespec, so use it unchanged. */
4348 strncpy (fname, fbeg, flen);
4350 /* if it's '#include filename', add the missing .h */
4351 if (index(fname,'.')==NULL) {
4352 strcat (fname, ".h");
4356 /* ??? There are currently 3 separate mechanisms for avoiding processing
4357 of redundant include files: #import, #pragma once, and
4358 redundant_include_p. It would be nice if they were unified. */
4359 if (redundant_include_p (fname))
4362 f = lookup_import (fname, searchptr);
4364 f = open_include_file (fname, searchptr);
4366 return 0; /* Already included this file */
4368 else if (f == -1 && errno == EACCES)
4369 warning ("Header file %s exists, but is not readable", fname);
4377 /* A file that was not found. */
4379 strncpy (fname, fbeg, flen);
4381 /* If generating dependencies and -MG was specified, we assume missing
4382 files are leaf files, living in the same directory as the source file
4383 or other similar place; these missing files may be generated from
4384 other files and may not exist yet (eg: y.tab.h). */
4385 if (print_deps_missing_files
4386 && print_deps > (angle_brackets || (system_include_depth > 0)))
4388 /* If it was requested as a system header file,
4389 then assume it belongs in the first place to look for such. */
4392 for (searchptr = search_start; searchptr; searchptr = searchptr->next)
4394 if (searchptr->fname)
4398 if (searchptr->fname[0] == 0)
4400 p = xmalloc (strlen (searchptr->fname)
4401 + strlen (fname) + 2);
4402 strcpy (p, searchptr->fname);
4405 deps_output (p, ' ');
4412 /* Otherwise, omit the directory, as if the file existed
4413 in the directory with the source. */
4414 deps_output (fname, ' ');
4417 /* If -M was specified, and this header file won't be added to the
4418 dependency list, then don't count this as an error, because we can
4419 still produce correct output. Otherwise, we can't produce correct
4420 output, because there may be dependencies we need inside the missing
4421 file, and we don't know what directory this missing file exists in. */
4423 && (print_deps <= (angle_brackets || (system_include_depth > 0))))
4424 warning ("No include path in which to find %s", fname);
4425 else if (search_start)
4426 error_from_errno (fname);
4428 error ("No include path in which to find %s", fname);
4430 /* Check to see if this include file is a once-only include file.
4433 struct file_name_list* ptr;
4435 for (ptr = dont_repeat_files; ptr; ptr = ptr->next) {
4436 if (!strcmp (ptr->fname, fname)) {
4438 return 0; /* This file was once'd. */
4442 for (ptr = all_include_files; ptr; ptr = ptr->next) {
4443 if (!strcmp (ptr->fname, fname))
4444 break; /* This file was included before. */
4448 /* This is the first time for this file. */
4449 /* Add it to list of files included. */
4451 ptr = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
4452 ptr->control_macro = 0;
4453 ptr->c_system_include_path = 0;
4454 ptr->next = all_include_files;
4455 all_include_files = ptr;
4456 ptr->fname = savestring (fname);
4457 ptr->got_name_map = 0;
4459 /* For -M, add this file to the dependencies. */
4460 if (print_deps > (angle_brackets || (system_include_depth > 0)))
4461 deps_output (fname, ' ');
4464 /* Handle -H option. */
4465 if (print_include_names) {
4466 output_dots (stderr, indepth);
4467 fprintf (stderr, "%s\n", fname);
4471 system_include_depth++;
4473 /* Actually process the file. */
4474 add_import (f, fname); /* Record file on "seen" list for #import. */
4476 pcftry = (char *) alloca (strlen (fname) + 30);
4487 sprintf (pcftry, "%s%d", fname, pcfnum++);
4489 pcf = open (pcftry, O_RDONLY, 0666);
4495 if (bcmp ((char *) &stat_f.st_ino, (char *) &s.st_ino,
4497 || stat_f.st_dev != s.st_dev)
4499 pcfbuf = check_precompiled (pcf, fname, &pcfbuflimit);
4500 /* Don't need it any more. */
4505 /* Don't need it at all. */
4510 } while (pcf != -1 && !pcfbuf);
4513 /* Actually process the file */
4515 pcfname = xmalloc (strlen (pcftry) + 1);
4516 strcpy (pcfname, pcftry);
4517 pcfinclude (pcfbuf, pcfbuflimit, fname, op);
4520 finclude (f, fname, op, is_system_include (fname), searchptr);
4523 system_include_depth--;
4528 /* Return nonzero if there is no need to include file NAME
4529 because it has already been included and it contains a conditional
4530 to make a repeated include do nothing. */
4533 redundant_include_p (name)
4536 struct file_name_list *l = all_include_files;
4537 for (; l; l = l->next)
4538 if (! strcmp (name, l->fname)
4540 && lookup (l->control_macro, -1, -1))
4545 /* Return nonzero if the given FILENAME is an absolute pathname which
4546 designates a file within one of the known "system" include file
4547 directories. We assume here that if the given FILENAME looks like
4548 it is the name of a file which resides either directly in a "system"
4549 include file directory, or within any subdirectory thereof, then the
4550 given file must be a "system" include file. This function tells us
4551 if we should suppress pedantic errors/warnings for the given FILENAME.
4553 The value is 2 if the file is a C-language system header file
4554 for which C++ should (on most systems) assume `extern "C"'. */
4557 is_system_include (filename)
4558 register char *filename;
4560 struct file_name_list *searchptr;
4562 for (searchptr = first_system_include; searchptr;
4563 searchptr = searchptr->next)
4564 if (searchptr->fname) {
4565 register char *sys_dir = searchptr->fname;
4566 register unsigned length = strlen (sys_dir);
4568 if (! strncmp (sys_dir, filename, length)
4569 && (filename[length] == '/'
4570 #ifdef DIR_SEPARATOR
4571 || filename[length] == DIR_SEPARATOR
4574 if (searchptr->c_system_include_path)
4583 /* The file_name_map structure holds a mapping of file names for a
4584 particular directory. This mapping is read from the file named
4585 FILE_NAME_MAP_FILE in that directory. Such a file can be used to
4586 map filenames on a file system with severe filename restrictions,
4587 such as DOS. The format of the file name map file is just a series
4588 of lines with two tokens on each line. The first token is the name
4589 to map, and the second token is the actual name to use. */
4591 struct file_name_map
4593 struct file_name_map *map_next;
4598 #define FILE_NAME_MAP_FILE "header.gcc"
4600 /* Read a space delimited string of unlimited length from a stdio
4604 read_filename_string (ch, f)
4612 set = alloc = xmalloc (len + 1);
4616 while ((ch = getc (f)) != EOF && ! is_space[ch])
4618 if (set - alloc == len)
4621 alloc = xrealloc (alloc, len + 1);
4622 set = alloc + len / 2;
4632 /* Read the file name map file for DIRNAME. */
4634 static struct file_name_map *
4635 read_name_map (dirname)
4638 /* This structure holds a linked list of file name maps, one per
4640 struct file_name_map_list
4642 struct file_name_map_list *map_list_next;
4643 char *map_list_name;
4644 struct file_name_map *map_list_map;
4646 static struct file_name_map_list *map_list;
4647 register struct file_name_map_list *map_list_ptr;
4651 for (map_list_ptr = map_list; map_list_ptr;
4652 map_list_ptr = map_list_ptr->map_list_next)
4653 if (! strcmp (map_list_ptr->map_list_name, dirname))
4654 return map_list_ptr->map_list_map;
4656 map_list_ptr = ((struct file_name_map_list *)
4657 xmalloc (sizeof (struct file_name_map_list)));
4658 map_list_ptr->map_list_name = savestring (dirname);
4659 map_list_ptr->map_list_map = NULL;
4661 name = (char *) alloca (strlen (dirname) + strlen (FILE_NAME_MAP_FILE) + 2);
4662 strcpy (name, dirname);
4665 strcat (name, FILE_NAME_MAP_FILE);
4666 f = fopen (name, "r");
4668 map_list_ptr->map_list_map = NULL;
4672 int dirlen = strlen (dirname);
4674 while ((ch = getc (f)) != EOF)
4677 struct file_name_map *ptr;
4681 from = read_filename_string (ch, f);
4682 while ((ch = getc (f)) != EOF && is_hor_space[ch])
4684 to = read_filename_string (ch, f);
4686 ptr = ((struct file_name_map *)
4687 xmalloc (sizeof (struct file_name_map)));
4688 ptr->map_from = from;
4690 /* Make the real filename absolute. */
4695 ptr->map_to = xmalloc (dirlen + strlen (to) + 2);
4696 strcpy (ptr->map_to, dirname);
4697 ptr->map_to[dirlen] = '/';
4698 strcpy (ptr->map_to + dirlen + 1, to);
4702 ptr->map_next = map_list_ptr->map_list_map;
4703 map_list_ptr->map_list_map = ptr;
4705 while ((ch = getc (f)) != '\n')
4712 map_list_ptr->map_list_next = map_list;
4713 map_list = map_list_ptr;
4715 return map_list_ptr->map_list_map;
4718 /* Try to open include file FILENAME. SEARCHPTR is the directory
4719 being tried from the include file search path. This function maps
4720 filenames on file systems based on information read by
4724 open_include_file (filename, searchptr)
4726 struct file_name_list *searchptr;
4728 register struct file_name_map *map;
4729 register char *from;
4732 if (searchptr && ! searchptr->got_name_map)
4734 searchptr->name_map = read_name_map (searchptr->fname
4735 ? searchptr->fname : ".");
4736 searchptr->got_name_map = 1;
4739 /* First check the mapping for the directory we are using. */
4740 if (searchptr && searchptr->name_map)
4743 if (searchptr->fname)
4744 from += strlen (searchptr->fname) + 1;
4745 for (map = searchptr->name_map; map; map = map->map_next)
4747 if (! strcmp (map->map_from, from))
4749 /* Found a match. */
4750 return open (map->map_to, O_RDONLY, 0666);
4755 /* Try to find a mapping file for the particular directory we are
4756 looking in. Thus #include <sys/types.h> will look up sys/types.h
4757 in /usr/include/header.gcc and look up types.h in
4758 /usr/include/sys/header.gcc. */
4759 p = rindex (filename, '/');
4760 #ifdef DIR_SEPARATOR
4761 if (! p) p = rindex (filename, DIR_SEPARATOR);
4763 char *tmp = rindex (filename, DIR_SEPARATOR);
4764 if (tmp != NULL && tmp > p) p = tmp;
4771 && strlen (searchptr->fname) == p - filename
4772 && ! strncmp (searchptr->fname, filename, p - filename))
4774 /* FILENAME is in SEARCHPTR, which we've already checked. */
4775 return open (filename, O_RDONLY, 0666);
4785 dir = (char *) alloca (p - filename + 1);
4786 bcopy (filename, dir, p - filename);
4787 dir[p - filename] = '\0';
4790 for (map = read_name_map (dir); map; map = map->map_next)
4791 if (! strcmp (map->map_from, from))
4792 return open (map->map_to, O_RDONLY, 0666);
4794 return open (filename, O_RDONLY, 0666);
4797 /* Process the contents of include file FNAME, already open on descriptor F,
4799 SYSTEM_HEADER_P is 1 if this file resides in any one of the known
4800 "system" include directories (as decided by the `is_system_include'
4802 DIRPTR is the link in the dir path through which this file was found,
4803 or 0 if the file name was absolute. */
4806 finclude (f, fname, op, system_header_p, dirptr)
4810 int system_header_p;
4811 struct file_name_list *dirptr;
4816 FILE_BUF *fp; /* For input stack frame */
4817 int missing_newline = 0;
4819 CHECK_DEPTH (return;);
4821 if (file_size_and_mode (f, &st_mode, &st_size) < 0)
4823 perror_with_name (fname);
4828 fp = &instack[indepth + 1];
4829 bzero ((char *) fp, sizeof (FILE_BUF));
4830 fp->nominal_fname = fp->fname = fname;
4833 fp->if_stack = if_stack;
4834 fp->system_header_p = system_header_p;
4837 if (S_ISREG (st_mode)) {
4838 fp->buf = (U_CHAR *) xmalloc (st_size + 2);
4841 /* Read the file contents, knowing that st_size is an upper bound
4842 on the number of bytes we can read. */
4843 fp->length = safe_read (f, fp->buf, st_size);
4844 if (fp->length < 0) goto nope;
4846 else if (S_ISDIR (st_mode)) {
4847 error ("directory `%s' specified in #include", fname);
4851 /* Cannot count its file size before reading.
4852 First read the entire file into heap and
4853 copy them into buffer on stack. */
4858 fp->buf = (U_CHAR *) xmalloc (bsize + 2);
4861 i = safe_read (f, fp->buf + st_size, bsize - st_size);
4863 goto nope; /* error! */
4865 if (st_size != bsize)
4866 break; /* End of file */
4868 fp->buf = (U_CHAR *) xrealloc (fp->buf, bsize + 2);
4871 fp->length = st_size;
4874 if ((fp->length > 0 && fp->buf[fp->length - 1] != '\n')
4875 /* Backslash-newline at end is not good enough. */
4876 || (fp->length > 1 && fp->buf[fp->length - 2] == '\\')) {
4877 fp->buf[fp->length++] = '\n';
4878 missing_newline = 1;
4880 fp->buf[fp->length] = '\0';
4882 /* Close descriptor now, so nesting does not use lots of descriptors. */
4885 /* Must do this before calling trigraph_pcp, so that the correct file name
4886 will be printed in warning messages. */
4889 input_file_stack_tick++;
4894 output_line_command (fp, op, 0, enter_file);
4897 if (missing_newline)
4900 if (pedantic && missing_newline)
4901 pedwarn ("file does not end in newline");
4904 input_file_stack_tick++;
4905 output_line_command (&instack[indepth], op, 0, leave_file);
4911 perror_with_name (fname);
4916 /* Record that inclusion of the file named FILE
4917 should be controlled by the macro named MACRO_NAME.
4918 This means that trying to include the file again
4919 will do something if that macro is defined. */
4922 record_control_macro (file, macro_name)
4926 struct file_name_list *new;
4928 for (new = all_include_files; new; new = new->next) {
4929 if (!strcmp (new->fname, file)) {
4930 new->control_macro = macro_name;
4935 /* If the file is not in all_include_files, something's wrong. */
4939 /* Maintain and search list of included files, for #import. */
4941 #define IMPORT_HASH_SIZE 31
4943 struct import_file {
4947 struct import_file *next;
4950 /* Hash table of files already included with #include or #import. */
4952 static struct import_file *import_hash_table[IMPORT_HASH_SIZE];
4954 /* Hash a file name for import_hash_table. */
4962 while (*f) val += *f++;
4963 return (val%IMPORT_HASH_SIZE);
4966 /* Search for file FILENAME in import_hash_table.
4967 Return -2 if found, either a matching name or a matching inode.
4968 Otherwise, open the file and return a file descriptor if successful
4969 or -1 if unsuccessful. */
4972 lookup_import (filename, searchptr)
4974 struct file_name_list *searchptr;
4976 struct import_file *i;
4982 hashval = import_hash (filename);
4984 /* Attempt to find file in list of already included files */
4985 i = import_hash_table[hashval];
4988 if (!strcmp (filename, i->name))
4989 return -2; /* return found */
4992 /* Open it and try a match on inode/dev */
4993 fd = open_include_file (filename, searchptr);
4997 for (h = 0; h < IMPORT_HASH_SIZE; h++) {
4998 i = import_hash_table[h];
5000 /* Compare the inode and the device.
5001 Supposedly on some systems the inode is not a scalar. */
5002 if (!bcmp ((char *) &i->inode, (char *) &sb.st_ino, sizeof (sb.st_ino))
5003 && i->dev == sb.st_dev) {
5005 return -2; /* return found */
5010 return fd; /* Not found, return open file */
5013 /* Add the file FNAME, open on descriptor FD, to import_hash_table. */
5016 add_import (fd, fname)
5020 struct import_file *i;
5024 hashval = import_hash (fname);
5026 i = (struct import_file *)xmalloc (sizeof (struct import_file));
5027 i->name = (char *)xmalloc (strlen (fname)+1);
5028 strcpy (i->name, fname);
5029 bcopy ((char *) &sb.st_ino, (char *) &i->inode, sizeof (sb.st_ino));
5031 i->next = import_hash_table[hashval];
5032 import_hash_table[hashval] = i;
5035 /* Load the specified precompiled header into core, and verify its
5036 preconditions. PCF indicates the file descriptor to read, which must
5037 be a regular file. FNAME indicates the file name of the original
5038 header. *LIMIT will be set to an address one past the end of the file.
5039 If the preconditions of the file are not satisfied, the buffer is
5040 freed and we return 0. If the preconditions are satisfied, return
5041 the address of the buffer following the preconditions. The buffer, in
5042 this case, should never be freed because various pieces of it will
5043 be referred to until all precompiled strings are output at the end of
5047 check_precompiled (pcf, fname, limit)
5061 if (file_size_and_mode (pcf, &st_mode, &st_size) < 0)
5064 if (S_ISREG (st_mode))
5066 buf = xmalloc (st_size + 2);
5067 length = safe_read (pcf, buf, st_size);
5074 if (length > 0 && buf[length-1] != '\n')
5075 buf[length++] = '\n';
5078 *limit = buf + length;
5080 /* File is in core. Check the preconditions. */
5081 if (!check_preconditions (buf))
5083 for (cp = buf; *cp; cp++)
5086 fprintf (stderr, "Using preinclude %s\n", fname);
5092 fprintf (stderr, "Cannot use preinclude %s\n", fname);
5098 /* PREC (null terminated) points to the preconditions of a
5099 precompiled header. These are a series of #define and #undef
5100 lines which must match the current contents of the hash
5103 check_preconditions (prec)
5110 lineend = (char *) index (prec, '\n');
5112 if (*prec++ != '#') {
5113 error ("Bad format encountered while reading precompiled file");
5116 if (!strncmp (prec, "define", 6)) {
5120 mdef = create_definition (prec, lineend, NULL_PTR);
5125 if ((hp = lookup (mdef.symnam, mdef.symlen, -1)) == NULL
5126 || (hp->type != T_MACRO && hp->type != T_CONST)
5127 || (hp->type == T_MACRO
5128 && !compare_defs (mdef.defn, hp->value.defn)
5129 && (mdef.defn->length != 2
5130 || mdef.defn->expansion[0] != '\n'
5131 || mdef.defn->expansion[1] != ' ')))
5133 } else if (!strncmp (prec, "undef", 5)) {
5138 while (is_hor_space[(U_CHAR) *prec])
5141 while (is_idchar[(U_CHAR) *prec])
5145 if (lookup (name, len, -1))
5148 error ("Bad format encountered while reading precompiled file");
5153 /* They all passed successfully */
5157 /* Process the main body of a precompiled file. BUF points to the
5158 string section of the file, following the preconditions. LIMIT is one
5159 character past the end. NAME is the name of the file being read
5160 in. OP is the main output buffer */
5162 pcfinclude (buf, limit, name, op)
5163 U_CHAR *buf, *limit, *name;
5170 /* First in the file comes 4 bytes indicating the number of strings, */
5171 /* in network byte order. (MSB first). */
5173 nstrings = (nstrings << 8) | *cp++;
5174 nstrings = (nstrings << 8) | *cp++;
5175 nstrings = (nstrings << 8) | *cp++;
5177 /* Looping over each string... */
5178 while (nstrings--) {
5179 U_CHAR *string_start;
5180 U_CHAR *endofthiskey;
5184 /* Each string starts with a STRINGDEF structure (str), followed */
5185 /* by the text of the string (string_start) */
5187 /* First skip to a longword boundary */
5188 /* ??? Why a 4-byte boundary? On all machines? */
5189 /* NOTE: This works correctly even if HOST_WIDE_INT
5190 is narrower than a pointer.
5191 Do not try risky measures here to get another type to use!
5192 Do not include stddef.h--it will fail! */
5193 if ((HOST_WIDE_INT) cp & 3)
5194 cp += 4 - ((HOST_WIDE_INT) cp & 3);
5196 /* Now get the string. */
5197 str = (STRINGDEF *) cp;
5198 string_start = cp += sizeof (STRINGDEF);
5200 for (; *cp; cp++) /* skip the string */
5203 /* We need to macro expand the string here to ensure that the
5204 proper definition environment is in place. If it were only
5205 expanded when we find out it is needed, macros necessary for
5206 its proper expansion might have had their definitions changed. */
5207 tmpbuf = expand_to_temp_buffer (string_start, cp++, 0, 0);
5208 /* Lineno is already set in the precompiled file */
5209 str->contents = tmpbuf.buf;
5210 str->len = tmpbuf.length;
5212 str->filename = name;
5213 str->output_mark = outbuf.bufp - outbuf.buf;
5216 *stringlist_tailp = str;
5217 stringlist_tailp = &str->chain;
5219 /* Next comes a fourbyte number indicating the number of keys */
5220 /* for this string. */
5222 nkeys = (nkeys << 8) | *cp++;
5223 nkeys = (nkeys << 8) | *cp++;
5224 nkeys = (nkeys << 8) | *cp++;
5226 /* If this number is -1, then the string is mandatory. */
5230 /* Otherwise, for each key, */
5231 for (; nkeys--; free (tmpbuf.buf), cp = endofthiskey + 1) {
5232 KEYDEF *kp = (KEYDEF *) cp;
5235 /* It starts with a KEYDEF structure */
5236 cp += sizeof (KEYDEF);
5238 /* Find the end of the key. At the end of this for loop we
5239 advance CP to the start of the next key using this variable. */
5240 endofthiskey = cp + strlen (cp);
5243 /* Expand the key, and enter it into the hash table. */
5244 tmpbuf = expand_to_temp_buffer (cp, endofthiskey, 0, 0);
5245 tmpbuf.bufp = tmpbuf.buf;
5247 while (is_hor_space[*tmpbuf.bufp])
5249 if (!is_idstart[*tmpbuf.bufp]
5250 || tmpbuf.bufp == tmpbuf.buf + tmpbuf.length) {
5255 hp = lookup (tmpbuf.bufp, -1, -1);
5258 install (tmpbuf.bufp, -1, T_PCSTRING, (char *) kp, -1);
5260 else if (hp->type == T_PCSTRING) {
5261 kp->chain = hp->value.keydef;
5262 hp->value.keydef = kp;
5268 /* This output_line_command serves to switch us back to the current
5269 input file in case some of these strings get output (which will
5270 result in line commands for the header file being output). */
5271 output_line_command (&instack[indepth], op, 0, enter_file);
5274 /* Called from rescan when it hits a key for strings. Mark them all */
5275 /* used and clean up. */
5282 for (kp = hp->value.keydef; kp; kp = kp->chain)
5283 kp->str->writeflag = 1;
5287 /* Write the output, interspersing precompiled strings in their */
5288 /* appropriate places. */
5292 STRINGDEF *next_string;
5293 U_CHAR *cur_buf_loc;
5294 int line_command_len = 80;
5295 char *line_command = xmalloc (line_command_len);
5298 /* In each run through the loop, either cur_buf_loc == */
5299 /* next_string_loc, in which case we print a series of strings, or */
5300 /* it is less than next_string_loc, in which case we write some of */
5302 cur_buf_loc = outbuf.buf;
5303 next_string = stringlist;
5305 while (cur_buf_loc < outbuf.bufp || next_string) {
5307 && cur_buf_loc - outbuf.buf == next_string->output_mark) {
5308 if (next_string->writeflag) {
5309 len = 4 * strlen (next_string->filename) + 32;
5310 while (len > line_command_len)
5311 line_command = xrealloc (line_command,
5312 line_command_len *= 2);
5313 sprintf (line_command, "\n# %d ", next_string->lineno);
5314 strcpy (quote_string (line_command + strlen (line_command),
5315 next_string->filename),
5317 safe_write (fileno (stdout), line_command, strlen (line_command));
5318 safe_write (fileno (stdout), next_string->contents, next_string->len);
5320 next_string = next_string->chain;
5324 ? (next_string->output_mark
5325 - (cur_buf_loc - outbuf.buf))
5326 : outbuf.bufp - cur_buf_loc);
5328 safe_write (fileno (stdout), cur_buf_loc, len);
5332 free (line_command);
5335 /* Pass a directive through to the output file.
5336 BUF points to the contents of the directive, as a contiguous string.
5337 LIMIT points to the first character past the end of the directive.
5338 KEYWORD is the keyword-table entry for the directive. */
5341 pass_thru_directive (buf, limit, op, keyword)
5342 U_CHAR *buf, *limit;
5344 struct directive *keyword;
5346 register unsigned keyword_length = keyword->length;
5348 check_expand (op, 1 + keyword_length + (limit - buf));
5350 bcopy (keyword->name, (char *) op->bufp, keyword_length);
5351 op->bufp += keyword_length;
5352 if (limit != buf && buf[0] != ' ')
5354 bcopy ((char *) buf, (char *) op->bufp, limit - buf);
5355 op->bufp += (limit - buf);
5358 /* Count the line we have just made in the output,
5359 to get in sync properly. */
5364 /* The arglist structure is built by do_define to tell
5365 collect_definition where the argument names begin. That
5366 is, for a define like "#define f(x,y,z) foo+x-bar*y", the arglist
5367 would contain pointers to the strings x, y, and z.
5368 Collect_definition would then build a DEFINITION node,
5369 with reflist nodes pointing to the places x, y, and z had
5370 appeared. So the arglist is just convenience data passed
5371 between these two routines. It is not kept around after
5372 the current #define has been processed and entered into the
5376 struct arglist *next;
5383 /* Create a DEFINITION node from a #define directive. Arguments are
5384 as for do_define. */
5386 create_definition (buf, limit, op)
5387 U_CHAR *buf, *limit;
5390 U_CHAR *bp; /* temp ptr into input buffer */
5391 U_CHAR *symname; /* remember where symbol name starts */
5392 int sym_length; /* and how long it is */
5393 int line = instack[indepth].lineno;
5394 char *file = instack[indepth].nominal_fname;
5398 int arglengths = 0; /* Accumulate lengths of arg names
5399 plus number of args. */
5404 while (is_hor_space[*bp])
5407 symname = bp; /* remember where it starts */
5408 sym_length = check_macro_name (bp, "macro");
5411 /* Lossage will occur if identifiers or control keywords are broken
5412 across lines using backslash. This is not the right place to take
5416 struct arglist *arg_ptrs = NULL;
5419 bp++; /* skip '(' */
5420 SKIP_WHITE_SPACE (bp);
5422 /* Loop over macro argument names. */
5423 while (*bp != ')') {
5424 struct arglist *temp;
5426 temp = (struct arglist *) alloca (sizeof (struct arglist));
5428 temp->next = arg_ptrs;
5429 temp->argno = argno++;
5430 temp->rest_args = 0;
5434 pedwarn ("another parameter follows `%s'",
5437 if (!is_idstart[*bp])
5438 pedwarn ("invalid character in macro parameter name");
5440 /* Find the end of the arg name. */
5441 while (is_idchar[*bp]) {
5443 /* do we have a "special" rest-args extension here? */
5444 if (limit - bp > REST_EXTENSION_LENGTH &&
5445 strncmp (rest_extension, bp, REST_EXTENSION_LENGTH) == 0) {
5447 temp->rest_args = 1;
5451 temp->length = bp - temp->name;
5453 bp += REST_EXTENSION_LENGTH;
5454 arglengths += temp->length + 2;
5455 SKIP_WHITE_SPACE (bp);
5456 if (temp->length == 0 || (*bp != ',' && *bp != ')')) {
5457 error ("badly punctuated parameter list in `#define'");
5462 SKIP_WHITE_SPACE (bp);
5463 /* A comma at this point can only be followed by an identifier. */
5464 if (!is_idstart[*bp]) {
5465 error ("badly punctuated parameter list in `#define'");
5470 error ("unterminated parameter list in `#define'");
5474 struct arglist *otemp;
5476 for (otemp = temp->next; otemp != NULL; otemp = otemp->next)
5477 if (temp->length == otemp->length &&
5478 strncmp (temp->name, otemp->name, temp->length) == 0) {
5481 name = (U_CHAR *) alloca (temp->length + 1);
5482 (void) strncpy (name, temp->name, temp->length);
5483 name[temp->length] = '\0';
5484 error ("duplicate argument name `%s' in `#define'", name);
5490 ++bp; /* skip paren */
5491 SKIP_WHITE_SPACE (bp);
5492 /* now everything from bp before limit is the definition. */
5493 defn = collect_expansion (bp, limit, argno, arg_ptrs);
5494 defn->rest_args = rest_args;
5496 /* Now set defn->args.argnames to the result of concatenating
5497 the argument names in reverse order
5498 with comma-space between them. */
5499 defn->args.argnames = (U_CHAR *) xmalloc (arglengths + 1);
5501 struct arglist *temp;
5503 for (temp = arg_ptrs; temp; temp = temp->next) {
5504 bcopy (temp->name, &defn->args.argnames[i], temp->length);
5506 if (temp->next != 0) {
5507 defn->args.argnames[i++] = ',';
5508 defn->args.argnames[i++] = ' ';
5511 defn->args.argnames[i] = 0;
5514 /* Simple expansion or empty definition. */
5518 if (is_hor_space[*bp]) {
5520 SKIP_WHITE_SPACE (bp);
5523 case '!': case '"': case '#': case '%': case '&': case '\'':
5524 case ')': case '*': case '+': case ',': case '-': case '.':
5525 case '/': case ':': case ';': case '<': case '=': case '>':
5526 case '?': case '[': case '\\': case ']': case '^': case '{':
5527 case '|': case '}': case '~':
5528 warning ("missing white space after `#define %.*s'",
5529 sym_length, symname);
5533 pedwarn ("missing white space after `#define %.*s'",
5534 sym_length, symname);
5539 /* Now everything from bp before limit is the definition. */
5540 defn = collect_expansion (bp, limit, -1, NULL_PTR);
5541 defn->args.argnames = (U_CHAR *) "";
5547 /* OP is null if this is a predefinition */
5548 defn->predefined = !op;
5550 mdef.symnam = symname;
5551 mdef.symlen = sym_length;
5560 /* Process a #define command.
5561 BUF points to the contents of the #define command, as a contiguous string.
5562 LIMIT points to the first character past the end of the definition.
5563 KEYWORD is the keyword-table entry for #define. */
5566 do_define (buf, limit, op, keyword)
5567 U_CHAR *buf, *limit;
5569 struct directive *keyword;
5574 /* If this is a precompiler run (with -pcp) pass thru #define commands. */
5575 if (pcp_outfile && op)
5576 pass_thru_directive (buf, limit, op, keyword);
5578 mdef = create_definition (buf, limit, op);
5582 hashcode = hashf (mdef.symnam, mdef.symlen, HASHSIZE);
5586 if ((hp = lookup (mdef.symnam, mdef.symlen, hashcode)) != NULL) {
5588 /* Redefining a precompiled key is ok. */
5589 if (hp->type == T_PCSTRING)
5591 /* Redefining a macro is ok if the definitions are the same. */
5592 else if (hp->type == T_MACRO)
5593 ok = ! compare_defs (mdef.defn, hp->value.defn);
5594 /* Redefining a constant is ok with -D. */
5595 else if (hp->type == T_CONST)
5596 ok = ! done_initializing;
5597 /* Print the warning if it's not ok. */
5599 U_CHAR *msg; /* what pain... */
5601 /* If we are passing through #define and #undef directives, do
5602 that for this re-definition now. */
5603 if (debug_output && op)
5604 pass_thru_directive (buf, limit, op, keyword);
5606 msg = (U_CHAR *) alloca (mdef.symlen + 22);
5608 bcopy ((char *) mdef.symnam, (char *) (msg + 1), mdef.symlen);
5609 strcpy ((char *) (msg + mdef.symlen + 1), "' redefined");
5611 if (hp->type == T_MACRO)
5612 pedwarn_with_file_and_line (hp->value.defn->file, hp->value.defn->line,
5613 "this is the location of the previous definition");
5615 /* Replace the old definition. */
5617 hp->value.defn = mdef.defn;
5619 /* If we are passing through #define and #undef directives, do
5620 that for this new definition now. */
5621 if (debug_output && op)
5622 pass_thru_directive (buf, limit, op, keyword);
5623 install (mdef.symnam, mdef.symlen, T_MACRO,
5624 (char *) mdef.defn, hashcode);
5635 /* Check a purported macro name SYMNAME, and yield its length.
5636 USAGE is the kind of name this is intended for. */
5639 check_macro_name (symname, usage)
5646 for (p = symname; is_idchar[*p]; p++)
5648 sym_length = p - symname;
5649 if (sym_length == 0)
5650 error ("invalid %s name", usage);
5651 else if (!is_idstart[*symname]) {
5652 U_CHAR *msg; /* what pain... */
5653 msg = (U_CHAR *) alloca (sym_length + 1);
5654 bcopy ((char *) symname, (char *) msg, sym_length);
5655 msg[sym_length] = 0;
5656 error ("invalid %s name `%s'", usage, msg);
5658 if (! strncmp (symname, "defined", 7) && sym_length == 7)
5659 error ("invalid %s name `defined'", usage);
5665 * return zero if two DEFINITIONs are isomorphic
5668 compare_defs (d1, d2)
5669 DEFINITION *d1, *d2;
5671 register struct reflist *a1, *a2;
5672 register U_CHAR *p1 = d1->expansion;
5673 register U_CHAR *p2 = d2->expansion;
5676 if (d1->nargs != d2->nargs)
5678 if (strcmp ((char *)d1->args.argnames, (char *)d2->args.argnames))
5680 for (a1 = d1->pattern, a2 = d2->pattern; a1 && a2;
5681 a1 = a1->next, a2 = a2->next) {
5682 if (!((a1->nchars == a2->nchars && ! strncmp (p1, p2, a1->nchars))
5683 || ! comp_def_part (first, p1, a1->nchars, p2, a2->nchars, 0))
5684 || a1->argno != a2->argno
5685 || a1->stringify != a2->stringify
5686 || a1->raw_before != a2->raw_before
5687 || a1->raw_after != a2->raw_after)
5695 if (comp_def_part (first, p1, d1->length - (p1 - d1->expansion),
5696 p2, d2->length - (p2 - d2->expansion), 1))
5701 /* Return 1 if two parts of two macro definitions are effectively different.
5702 One of the parts starts at BEG1 and has LEN1 chars;
5703 the other has LEN2 chars at BEG2.
5704 Any sequence of whitespace matches any other sequence of whitespace.
5705 FIRST means these parts are the first of a macro definition;
5706 so ignore leading whitespace entirely.
5707 LAST means these parts are the last of a macro definition;
5708 so ignore trailing whitespace entirely. */
5711 comp_def_part (first, beg1, len1, beg2, len2, last)
5713 U_CHAR *beg1, *beg2;
5717 register U_CHAR *end1 = beg1 + len1;
5718 register U_CHAR *end2 = beg2 + len2;
5720 while (beg1 != end1 && is_space[*beg1]) beg1++;
5721 while (beg2 != end2 && is_space[*beg2]) beg2++;
5724 while (beg1 != end1 && is_space[end1[-1]]) end1--;
5725 while (beg2 != end2 && is_space[end2[-1]]) end2--;
5727 while (beg1 != end1 && beg2 != end2) {
5728 if (is_space[*beg1] && is_space[*beg2]) {
5729 while (beg1 != end1 && is_space[*beg1]) beg1++;
5730 while (beg2 != end2 && is_space[*beg2]) beg2++;
5731 } else if (*beg1 == *beg2) {
5735 return (beg1 != end1) || (beg2 != end2);
5738 /* Read a replacement list for a macro with parameters.
5739 Build the DEFINITION structure.
5740 Reads characters of text starting at BUF until END.
5741 ARGLIST specifies the formal parameters to look for
5742 in the text of the definition; NARGS is the number of args
5743 in that list, or -1 for a macro name that wants no argument list.
5744 MACRONAME is the macro name itself (so we can avoid recursive expansion)
5745 and NAMELEN is its length in characters.
5747 Note that comments and backslash-newlines have already been deleted
5748 from the argument. */
5750 /* Leading and trailing Space, Tab, etc. are converted to markers
5751 Newline Space, Newline Tab, etc.
5752 Newline Space makes a space in the final output
5753 but is discarded if stringified. (Newline Tab is similar but
5754 makes a Tab instead.)
5756 If there is no trailing whitespace, a Newline Space is added at the end
5757 to prevent concatenation that would be contrary to the standard. */
5760 collect_expansion (buf, end, nargs, arglist)
5763 struct arglist *arglist;
5766 register U_CHAR *p, *limit, *lastp, *exp_p;
5767 struct reflist *endpat = NULL;
5768 /* Pointer to first nonspace after last ## seen. */
5770 /* Pointer to first nonspace after last single-# seen. */
5771 U_CHAR *stringify = 0;
5772 /* How those tokens were spelled. */
5773 enum sharp_token_type concat_sharp_token_type = NO_SHARP_TOKEN;
5774 enum sharp_token_type stringify_sharp_token_type = NO_SHARP_TOKEN;
5776 int expected_delimiter = '\0';
5778 /* Scan thru the replacement list, ignoring comments and quoted
5779 strings, picking up on the macro calls. It does a linear search
5780 thru the arg list on every potential symbol. Profiling might say
5781 that something smarter should happen. */
5786 /* Find the beginning of the trailing whitespace. */
5787 /* Find end of leading whitespace. */
5790 while (p < limit && is_space[limit[-1]]) limit--;
5791 while (p < limit && is_space[*p]) p++;
5793 /* Allocate space for the text in the macro definition.
5794 Leading and trailing whitespace chars need 2 bytes each.
5795 Each other input char may or may not need 1 byte,
5796 so this is an upper bound.
5797 The extra 2 are for invented trailing newline-marker and final null. */
5798 maxsize = (sizeof (DEFINITION)
5799 + 2 * (end - limit) + 2 * (p - buf)
5801 defn = (DEFINITION *) xcalloc (1, maxsize);
5803 defn->nargs = nargs;
5804 exp_p = defn->expansion = (U_CHAR *) defn + sizeof (DEFINITION);
5809 /* Convert leading whitespace to Newline-markers. */
5810 while (p < limit && is_space[*p]) {
5817 : p[0] == '%' && p[1] == ':' && p[2] == '%' && p[3] == ':') {
5818 error ("`##' at start of macro definition");
5819 p += p[0] == '#' ? 2 : 4;
5822 /* Process the main body of the definition. */
5824 int skipped_arg = 0;
5825 register U_CHAR c = *p++;
5833 if (expected_delimiter != '\0') {
5834 if (c == expected_delimiter)
5835 expected_delimiter = '\0';
5837 expected_delimiter = c;
5841 if (p < limit && expected_delimiter) {
5842 /* In a string, backslash goes through
5843 and makes next char ordinary. */
5849 if (!expected_delimiter && *p == ':') {
5850 /* %: is not a digraph if preceded by an odd number of '<'s. */
5852 while (buf < p0 && p0[-1] == '<')
5855 /* Treat %:%: as ## and %: as #. */
5856 if (p[1] == '%' && p[2] == ':') {
5858 goto sharp_sharp_token;
5869 /* # is ordinary inside a string. */
5870 if (expected_delimiter)
5874 /* ##: concatenate preceding and following tokens. */
5875 /* Take out the first #, discard preceding whitespace. */
5877 while (exp_p > lastp && is_hor_space[exp_p[-1]])
5879 /* Skip the second #. */
5881 concat_sharp_token_type = c;
5882 if (is_hor_space[*p]) {
5883 concat_sharp_token_type++;
5885 SKIP_WHITE_SPACE (p);
5889 error ("`##' at end of macro definition");
5890 } else if (nargs >= 0) {
5891 /* Single #: stringify following argument ref.
5892 Don't leave the # in the expansion. */
5895 stringify_sharp_token_type = c;
5896 if (is_hor_space[*p]) {
5897 stringify_sharp_token_type++;
5899 SKIP_WHITE_SPACE (p);
5901 if (! is_idstart[*p] || nargs == 0)
5902 error ("`#' operator is not followed by a macro argument name");
5909 /* In -traditional mode, recognize arguments inside strings and
5910 and character constants, and ignore special properties of #.
5911 Arguments inside strings are considered "stringified", but no
5912 extra quote marks are supplied. */
5916 if (expected_delimiter != '\0') {
5917 if (c == expected_delimiter)
5918 expected_delimiter = '\0';
5920 expected_delimiter = c;
5924 /* Backslash quotes delimiters and itself, but not macro args. */
5925 if (expected_delimiter != 0 && p < limit
5926 && (*p == expected_delimiter || *p == '\\')) {
5933 if (expected_delimiter != '\0') /* No comments inside strings. */
5936 /* If we find a comment that wasn't removed by handle_directive,
5937 this must be -traditional. So replace the comment with
5941 while (p < limit && !(p[-2] == '*' && p[-1] == '/'))
5944 /* Mark this as a concatenation-point, as if it had been ##. */
5952 /* Handle the start of a symbol. */
5953 if (is_idchar[c] && nargs > 0) {
5954 U_CHAR *id_beg = p - 1;
5958 while (p != limit && is_idchar[*p]) p++;
5959 id_len = p - id_beg;
5961 if (is_idstart[c]) {
5962 register struct arglist *arg;
5964 for (arg = arglist; arg != NULL; arg = arg->next) {
5965 struct reflist *tpat;
5967 if (arg->name[0] == c
5968 && arg->length == id_len
5969 && strncmp (arg->name, id_beg, id_len) == 0) {
5970 if (expected_delimiter && warn_stringify) {
5972 warning ("macro argument `%.*s' is stringified.",
5975 warning ("macro arg `%.*s' would be stringified with -traditional.",
5979 /* If ANSI, don't actually substitute inside a string. */
5980 if (!traditional && expected_delimiter)
5982 /* make a pat node for this arg and append it to the end of
5984 tpat = (struct reflist *) xmalloc (sizeof (struct reflist));
5987 = concat == id_beg ? concat_sharp_token_type : NO_SHARP_TOKEN;
5988 tpat->raw_after = NO_SHARP_TOKEN;
5989 tpat->rest_args = arg->rest_args;
5991 = ((traditional ? expected_delimiter : stringify == id_beg)
5992 ? stringify_sharp_token_type : NO_SHARP_TOKEN);
5995 defn->pattern = tpat;
5997 endpat->next = tpat;
6000 tpat->argno = arg->argno;
6001 tpat->nchars = exp_p - lastp;
6003 register U_CHAR *p1 = p;
6004 SKIP_WHITE_SPACE (p1);
6007 : p1[0]=='%' && p1[1]==':' && p1[2]=='%' && p1[3]==':')
6008 tpat->raw_after = p1[0] + (p != p1);
6010 lastp = exp_p; /* place to start copying from next time */
6017 /* If this was not a macro arg, copy it into the expansion. */
6018 if (! skipped_arg) {
6019 register U_CHAR *lim1 = p;
6023 if (stringify == id_beg)
6024 error ("`#' operator should be followed by a macro argument name");
6029 if (!traditional && expected_delimiter == 0) {
6030 /* There is no trailing whitespace, so invent some in ANSI mode.
6031 But not if "inside a string" (which in ANSI mode
6032 happens only for -D option). */
6039 defn->length = exp_p - defn->expansion;
6041 /* Crash now if we overrun the allocated size. */
6042 if (defn->length + 1 > maxsize)
6046 /* This isn't worth the time it takes. */
6047 /* give back excess storage */
6048 defn->expansion = (U_CHAR *) xrealloc (defn->expansion, defn->length + 1);
6055 do_assert (buf, limit, op, keyword)
6056 U_CHAR *buf, *limit;
6058 struct directive *keyword;
6060 U_CHAR *bp; /* temp ptr into input buffer */
6061 U_CHAR *symname; /* remember where symbol name starts */
6062 int sym_length; /* and how long it is */
6063 struct arglist *tokens = NULL;
6065 if (pedantic && done_initializing && !instack[indepth].system_header_p)
6066 pedwarn ("ANSI C does not allow `#assert'");
6070 while (is_hor_space[*bp])
6073 symname = bp; /* remember where it starts */
6074 sym_length = check_macro_name (bp, "assertion");
6076 /* #define doesn't do this, but we should. */
6077 SKIP_WHITE_SPACE (bp);
6079 /* Lossage will occur if identifiers or control tokens are broken
6080 across lines using backslash. This is not the right place to take
6084 error ("missing token-sequence in `#assert'");
6091 bp++; /* skip '(' */
6092 SKIP_WHITE_SPACE (bp);
6094 tokens = read_token_list (&bp, limit, &error_flag);
6098 error ("empty token-sequence in `#assert'");
6102 ++bp; /* skip paren */
6103 SKIP_WHITE_SPACE (bp);
6106 /* If this name isn't already an assertion name, make it one.
6107 Error if it was already in use in some other way. */
6110 ASSERTION_HASHNODE *hp;
6111 int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
6112 struct tokenlist_list *value
6113 = (struct tokenlist_list *) xmalloc (sizeof (struct tokenlist_list));
6115 hp = assertion_lookup (symname, sym_length, hashcode);
6117 if (sym_length == 7 && ! strncmp (symname, "defined", sym_length))
6118 error ("`defined' redefined as assertion");
6119 hp = assertion_install (symname, sym_length, hashcode);
6122 /* Add the spec'd token-sequence to the list of such. */
6123 value->tokens = tokens;
6124 value->next = hp->value;
6132 do_unassert (buf, limit, op, keyword)
6133 U_CHAR *buf, *limit;
6135 struct directive *keyword;
6137 U_CHAR *bp; /* temp ptr into input buffer */
6138 U_CHAR *symname; /* remember where symbol name starts */
6139 int sym_length; /* and how long it is */
6141 struct arglist *tokens = NULL;
6142 int tokens_specified = 0;
6144 if (pedantic && done_initializing && !instack[indepth].system_header_p)
6145 pedwarn ("ANSI C does not allow `#unassert'");
6149 while (is_hor_space[*bp])
6152 symname = bp; /* remember where it starts */
6153 sym_length = check_macro_name (bp, "assertion");
6155 /* #define doesn't do this, but we should. */
6156 SKIP_WHITE_SPACE (bp);
6158 /* Lossage will occur if identifiers or control tokens are broken
6159 across lines using backslash. This is not the right place to take
6165 bp++; /* skip '(' */
6166 SKIP_WHITE_SPACE (bp);
6168 tokens = read_token_list (&bp, limit, &error_flag);
6172 error ("empty token list in `#unassert'");
6176 tokens_specified = 1;
6178 ++bp; /* skip paren */
6179 SKIP_WHITE_SPACE (bp);
6183 ASSERTION_HASHNODE *hp;
6184 int hashcode = hashf (symname, sym_length, ASSERTION_HASHSIZE);
6185 struct tokenlist_list *tail, *prev;
6187 hp = assertion_lookup (symname, sym_length, hashcode);
6191 /* If no token list was specified, then eliminate this assertion
6193 if (! tokens_specified) {
6194 struct tokenlist_list *next;
6195 for (tail = hp->value; tail; tail = next) {
6197 free_token_list (tail->tokens);
6200 delete_assertion (hp);
6202 /* If a list of tokens was given, then delete any matching list. */
6207 struct tokenlist_list *next = tail->next;
6208 if (compare_token_lists (tail->tokens, tokens)) {
6212 hp->value = tail->next;
6213 free_token_list (tail->tokens);
6226 /* Test whether there is an assertion named NAME
6227 and optionally whether it has an asserted token list TOKENS.
6228 NAME is not null terminated; its length is SYM_LENGTH.
6229 If TOKENS_SPECIFIED is 0, then don't check for any token list. */
6232 check_assertion (name, sym_length, tokens_specified, tokens)
6235 int tokens_specified;
6236 struct arglist *tokens;
6238 ASSERTION_HASHNODE *hp;
6239 int hashcode = hashf (name, sym_length, ASSERTION_HASHSIZE);
6241 if (pedantic && !instack[indepth].system_header_p)
6242 pedwarn ("ANSI C does not allow testing assertions");
6244 hp = assertion_lookup (name, sym_length, hashcode);
6246 /* It is not an assertion; just return false. */
6249 /* If no token list was specified, then value is 1. */
6250 if (! tokens_specified)
6254 struct tokenlist_list *tail;
6258 /* If a list of tokens was given,
6259 then succeed if the assertion records a matching list. */
6262 if (compare_token_lists (tail->tokens, tokens))
6267 /* Fail if the assertion has no matching list. */
6272 /* Compare two lists of tokens for equality including order of tokens. */
6275 compare_token_lists (l1, l2)
6276 struct arglist *l1, *l2;
6279 if (l1->length != l2->length)
6281 if (strncmp (l1->name, l2->name, l1->length))
6287 /* Succeed if both lists end at the same time. */
6291 /* Read a space-separated list of tokens ending in a close parenthesis.
6292 Return a list of strings, in the order they were written.
6293 (In case of error, return 0 and store -1 in *ERROR_FLAG.)
6294 Parse the text starting at *BPP, and update *BPP.
6295 Don't parse beyond LIMIT. */
6297 static struct arglist *
6298 read_token_list (bpp, limit, error_flag)
6303 struct arglist *token_ptrs = 0;
6309 /* Loop over the assertion value tokens. */
6311 struct arglist *temp;
6315 /* Find the end of the token. */
6319 } else if (*bp == ')') {
6324 } else if (*bp == '"' || *bp == '\'')
6325 bp = skip_quoted_string (bp, limit, 0, NULL_PTR, NULL_PTR, &eofp);
6327 while (! is_hor_space[*bp] && *bp != '(' && *bp != ')'
6328 && *bp != '"' && *bp != '\'' && bp != limit)
6331 temp = (struct arglist *) xmalloc (sizeof (struct arglist));
6332 temp->name = (U_CHAR *) xmalloc (bp - beg + 1);
6333 bcopy ((char *) beg, (char *) temp->name, bp - beg);
6334 temp->name[bp - beg] = 0;
6335 temp->next = token_ptrs;
6337 temp->length = bp - beg;
6339 SKIP_WHITE_SPACE (bp);
6342 error ("unterminated token sequence in `#assert' or `#unassert'");
6349 /* We accumulated the names in reverse order.
6350 Now reverse them to get the proper order. */
6352 register struct arglist *prev = 0, *this, *next;
6353 for (this = token_ptrs; this; this = next) {
6363 free_token_list (tokens)
6364 struct arglist *tokens;
6367 struct arglist *next = tokens->next;
6368 free (tokens->name);
6375 * Install a name in the assertion hash table.
6377 * If LEN is >= 0, it is the length of the name.
6378 * Otherwise, compute the length by scanning the entire name.
6380 * If HASH is >= 0, it is the precomputed hash code.
6381 * Otherwise, compute the hash code.
6383 static ASSERTION_HASHNODE *
6384 assertion_install (name, len, hash)
6389 register ASSERTION_HASHNODE *hp;
6390 register int i, bucket;
6391 register U_CHAR *p, *q;
6393 i = sizeof (ASSERTION_HASHNODE) + len + 1;
6394 hp = (ASSERTION_HASHNODE *) xmalloc (i);
6396 hp->bucket_hdr = &assertion_hashtab[bucket];
6397 hp->next = assertion_hashtab[bucket];
6398 assertion_hashtab[bucket] = hp;
6400 if (hp->next != NULL)
6401 hp->next->prev = hp;
6404 hp->name = ((U_CHAR *) hp) + sizeof (ASSERTION_HASHNODE);
6407 for (i = 0; i < len; i++)
6414 * find the most recent hash node for name name (ending with first
6415 * non-identifier char) installed by install
6417 * If LEN is >= 0, it is the length of the name.
6418 * Otherwise, compute the length by scanning the entire name.
6420 * If HASH is >= 0, it is the precomputed hash code.
6421 * Otherwise, compute the hash code.
6423 static ASSERTION_HASHNODE *
6424 assertion_lookup (name, len, hash)
6429 register ASSERTION_HASHNODE *bucket;
6431 bucket = assertion_hashtab[hash];
6433 if (bucket->length == len && strncmp (bucket->name, name, len) == 0)
6435 bucket = bucket->next;
6441 delete_assertion (hp)
6442 ASSERTION_HASHNODE *hp;
6445 if (hp->prev != NULL)
6446 hp->prev->next = hp->next;
6447 if (hp->next != NULL)
6448 hp->next->prev = hp->prev;
6450 /* make sure that the bucket chain header that
6451 the deleted guy was on points to the right thing afterwards. */
6452 if (hp == *hp->bucket_hdr)
6453 *hp->bucket_hdr = hp->next;
6459 * interpret #line command. Remembers previously seen fnames
6460 * in its very own hash table.
6462 #define FNAME_HASHSIZE 37
6465 do_line (buf, limit, op, keyword)
6466 U_CHAR *buf, *limit;
6468 struct directive *keyword;
6470 register U_CHAR *bp;
6471 FILE_BUF *ip = &instack[indepth];
6474 enum file_change_code file_change = same_file;
6476 /* Expand any macros. */
6477 tem = expand_to_temp_buffer (buf, limit, 0, 0);
6479 /* Point to macroexpanded line, which is null-terminated now. */
6481 SKIP_WHITE_SPACE (bp);
6483 if (!isdigit (*bp)) {
6484 error ("invalid format `#line' command");
6488 /* The Newline at the end of this line remains to be processed.
6489 To put the next line at the specified line number,
6490 we must store a line number now that is one less. */
6491 new_lineno = atoi (bp) - 1;
6493 /* NEW_LINENO is one less than the actual line number here. */
6494 if (pedantic && new_lineno < 0)
6495 pedwarn ("line number out of range in `#line' command");
6497 /* skip over the line number. */
6498 while (isdigit (*bp))
6501 #if 0 /* #line 10"foo.c" is supposed to be allowed. */
6502 if (*bp && !is_space[*bp]) {
6503 error ("invalid format `#line' command");
6508 SKIP_WHITE_SPACE (bp);
6511 static HASHNODE *fname_table[FNAME_HASHSIZE];
6512 HASHNODE *hp, **hash_bucket;
6518 /* Turn the file name, which is a character string literal,
6519 into a null-terminated string. Do this in place. */
6522 switch ((*p++ = *bp++)) {
6524 error ("invalid format `#line' command");
6529 char *bpc = (char *) bp;
6530 int c = parse_escape (&bpc);
6531 bp = (U_CHAR *) bpc;
6544 fname_length = p - fname;
6546 SKIP_WHITE_SPACE (bp);
6549 pedwarn ("garbage at end of `#line' command");
6551 file_change = enter_file;
6552 else if (*bp == '2')
6553 file_change = leave_file;
6554 else if (*bp == '3')
6555 ip->system_header_p = 1;
6556 else if (*bp == '4')
6557 ip->system_header_p = 2;
6559 error ("invalid format `#line' command");
6564 SKIP_WHITE_SPACE (bp);
6566 ip->system_header_p = 1;
6568 SKIP_WHITE_SPACE (bp);
6571 ip->system_header_p = 2;
6573 SKIP_WHITE_SPACE (bp);
6576 error ("invalid format `#line' command");
6582 &fname_table[hashf (fname, fname_length, FNAME_HASHSIZE)];
6583 for (hp = *hash_bucket; hp != NULL; hp = hp->next)
6584 if (hp->length == fname_length &&
6585 strncmp (hp->value.cpval, fname, fname_length) == 0) {
6586 ip->nominal_fname = hp->value.cpval;
6590 /* Didn't find it; cons up a new one. */
6591 hp = (HASHNODE *) xcalloc (1, sizeof (HASHNODE) + fname_length + 1);
6592 hp->next = *hash_bucket;
6595 hp->length = fname_length;
6596 ip->nominal_fname = hp->value.cpval = ((char *) hp) + sizeof (HASHNODE);
6597 bcopy (fname, hp->value.cpval, fname_length);
6600 error ("invalid format `#line' command");
6604 ip->lineno = new_lineno;
6605 output_line_command (ip, op, 0, file_change);
6606 check_expand (op, ip->length - (ip->bufp - ip->buf));
6611 * remove the definition of a symbol from the symbol table.
6612 * according to un*x /lib/cpp, it is not an error to undef
6613 * something that has no definitions, so it isn't one here either.
6617 do_undef (buf, limit, op, keyword)
6618 U_CHAR *buf, *limit;
6620 struct directive *keyword;
6624 U_CHAR *orig_buf = buf;
6626 /* If this is a precompiler run (with -pcp) pass thru #undef commands. */
6627 if (pcp_outfile && op)
6628 pass_thru_directive (buf, limit, op, keyword);
6630 SKIP_WHITE_SPACE (buf);
6631 sym_length = check_macro_name (buf, "macro");
6633 while ((hp = lookup (buf, sym_length, -1)) != NULL) {
6634 /* If we are generating additional info for debugging (with -g) we
6635 need to pass through all effective #undef commands. */
6636 if (debug_output && op)
6637 pass_thru_directive (orig_buf, limit, op, keyword);
6638 if (hp->type != T_MACRO)
6639 warning ("undefining `%s'", hp->name);
6645 SKIP_WHITE_SPACE (buf);
6647 pedwarn ("garbage after `#undef' directive");
6653 * Report an error detected by the program we are processing.
6654 * Use the text of the line in the error message.
6655 * (We use error because it prints the filename & line#.)
6659 do_error (buf, limit, op, keyword)
6660 U_CHAR *buf, *limit;
6662 struct directive *keyword;
6664 int length = limit - buf;
6665 U_CHAR *copy = (U_CHAR *) xmalloc (length + 1);
6666 bcopy ((char *) buf, (char *) copy, length);
6668 SKIP_WHITE_SPACE (copy);
6669 error ("#error %s", copy);
6674 * Report a warning detected by the program we are processing.
6675 * Use the text of the line in the warning message, then continue.
6676 * (We use error because it prints the filename & line#.)
6680 do_warning (buf, limit, op, keyword)
6681 U_CHAR *buf, *limit;
6683 struct directive *keyword;
6685 int length = limit - buf;
6686 U_CHAR *copy = (U_CHAR *) xmalloc (length + 1);
6687 bcopy ((char *) buf, (char *) copy, length);
6689 SKIP_WHITE_SPACE (copy);
6690 warning ("#warning %s", copy);
6694 /* Remember the name of the current file being read from so that we can
6695 avoid ever including it again. */
6701 FILE_BUF *ip = NULL;
6703 for (i = indepth; i >= 0; i--)
6704 if (instack[i].fname != NULL) {
6710 struct file_name_list *new;
6712 new = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
6713 new->next = dont_repeat_files;
6714 dont_repeat_files = new;
6715 new->fname = savestring (ip->fname);
6716 new->control_macro = 0;
6717 new->got_name_map = 0;
6718 new->c_system_include_path = 0;
6723 /* #ident has already been copied to the output file, so just ignore it. */
6726 do_ident (buf, limit)
6727 U_CHAR *buf, *limit;
6731 FILE_BUF *op = &outbuf;
6733 /* Allow #ident in system headers, since that's not user's fault. */
6734 if (pedantic && !instack[indepth].system_header_p)
6735 pedwarn ("ANSI C does not allow `#ident'");
6737 trybuf = expand_to_temp_buffer (buf, limit, 0, 0);
6738 buf = (U_CHAR *) alloca (trybuf.bufp - trybuf.buf + 1);
6739 bcopy ((char *) trybuf.buf, (char *) buf, trybuf.bufp - trybuf.buf);
6740 limit = buf + (trybuf.bufp - trybuf.buf);
6741 len = (limit - buf);
6744 /* Output directive name. */
6745 check_expand (op, 7);
6746 bcopy ("#ident ", (char *) op->bufp, 7);
6749 /* Output the expanded argument line. */
6750 check_expand (op, len);
6751 bcopy ((char *) buf, (char *) op->bufp, len);
6757 /* #pragma and its argument line have already been copied to the output file.
6758 Just check for some recognized pragmas that need validation here. */
6761 do_pragma (buf, limit)
6762 U_CHAR *buf, *limit;
6764 SKIP_WHITE_SPACE (buf);
6765 if (!strncmp (buf, "once", 4)) {
6766 /* Allow #pragma once in system headers, since that's not the user's
6768 if (!instack[indepth].system_header_p)
6769 warning ("`#pragma once' is obsolete");
6773 if (!strncmp (buf, "implementation", 14)) {
6774 /* Be quiet about `#pragma implementation' for a file only if it hasn't
6775 been included yet. */
6776 struct file_name_list *ptr;
6777 U_CHAR *p = buf + 14, *fname, *inc_fname;
6778 SKIP_WHITE_SPACE (p);
6779 if (*p == '\n' || *p != '\"')
6783 if (p = (U_CHAR *) index (fname, '\"'))
6786 for (ptr = all_include_files; ptr; ptr = ptr->next) {
6787 inc_fname = (U_CHAR *) rindex (ptr->fname, '/');
6788 inc_fname = inc_fname ? inc_fname + 1 : (U_CHAR *) ptr->fname;
6789 if (inc_fname && !strcmp (inc_fname, fname))
6790 warning ("`#pragma implementation' for `%s' appears after file is included",
6799 /* This was a fun hack, but #pragma seems to start to be useful.
6800 By failing to recognize it, we pass it through unchanged to cc1. */
6803 * the behavior of the #pragma directive is implementation defined.
6804 * this implementation defines it as follows.
6811 if (open ("/dev/tty", O_RDONLY, 0666) != 0)
6814 if (open ("/dev/tty", O_WRONLY, 0666) != 1)
6816 execl ("/usr/games/hack", "#pragma", 0);
6817 execl ("/usr/games/rogue", "#pragma", 0);
6818 execl ("/usr/new/emacs", "-f", "hanoi", "9", "-kill", 0);
6819 execl ("/usr/local/emacs", "-f", "hanoi", "9", "-kill", 0);
6821 fatal ("You are in a maze of twisty compiler features, all different");
6825 /* Just ignore #sccs, on systems where we define it at all. */
6831 pedwarn ("ANSI C does not allow `#sccs'");
6836 * handle #if command by
6837 * 1) inserting special `defined' keyword into the hash table
6838 * that gets turned into 0 or 1 by special_symbol (thus,
6839 * if the luser has a symbol called `defined' already, it won't
6840 * work inside the #if command)
6841 * 2) rescan the input into a temporary output buffer
6842 * 3) pass the output buffer to the yacc parser and collect a value
6843 * 4) clean up the mess left from steps 1 and 2.
6844 * 5) call conditional_skip to skip til the next #endif (etc.),
6845 * or not, depending on the value from step 3.
6849 do_if (buf, limit, op, keyword)
6850 U_CHAR *buf, *limit;
6852 struct directive *keyword;
6854 HOST_WIDE_INT value;
6855 FILE_BUF *ip = &instack[indepth];
6857 value = eval_if_expression (buf, limit - buf);
6858 conditional_skip (ip, value == 0, T_IF, NULL_PTR, op);
6863 * handle a #elif directive by not changing if_stack either.
6864 * see the comment above do_else.
6868 do_elif (buf, limit, op, keyword)
6869 U_CHAR *buf, *limit;
6871 struct directive *keyword;
6873 HOST_WIDE_INT value;
6874 FILE_BUF *ip = &instack[indepth];
6876 if (if_stack == instack[indepth].if_stack) {
6877 error ("`#elif' not within a conditional");
6880 if (if_stack->type != T_IF && if_stack->type != T_ELIF) {
6881 error ("`#elif' after `#else'");
6882 fprintf (stderr, " (matches line %d", if_stack->lineno);
6883 if (if_stack->fname != NULL && ip->fname != NULL &&
6884 strcmp (if_stack->fname, ip->nominal_fname) != 0)
6885 fprintf (stderr, ", file %s", if_stack->fname);
6886 fprintf (stderr, ")\n");
6888 if_stack->type = T_ELIF;
6891 if (if_stack->if_succeeded)
6892 skip_if_group (ip, 0, op);
6894 value = eval_if_expression (buf, limit - buf);
6896 skip_if_group (ip, 0, op);
6898 ++if_stack->if_succeeded; /* continue processing input */
6899 output_line_command (ip, op, 1, same_file);
6906 * evaluate a #if expression in BUF, of length LENGTH,
6907 * then parse the result as a C expression and return the value as an int.
6909 static HOST_WIDE_INT
6910 eval_if_expression (buf, length)
6915 HASHNODE *save_defined;
6916 HOST_WIDE_INT value;
6918 save_defined = install ("defined", -1, T_SPEC_DEFINED, NULL_PTR, -1);
6920 temp_obuf = expand_to_temp_buffer (buf, buf + length, 0, 1);
6922 delete_macro (save_defined); /* clean up special symbol */
6924 value = parse_c_expression (temp_obuf.buf);
6926 free (temp_obuf.buf);
6932 * routine to handle ifdef/ifndef. Try to look up the symbol,
6933 * then do or don't skip to the #endif/#else/#elif depending
6934 * on what directive is actually being processed.
6938 do_xifdef (buf, limit, op, keyword)
6939 U_CHAR *buf, *limit;
6941 struct directive *keyword;
6944 FILE_BUF *ip = &instack[indepth];
6946 int start_of_file = 0;
6947 U_CHAR *control_macro = 0;
6949 /* Detect a #ifndef at start of file (not counting comments). */
6950 if (ip->fname != 0 && keyword->type == T_IFNDEF) {
6951 U_CHAR *p = ip->buf;
6952 while (p != directive_start) {
6956 else if (c == '/' && p != ip->bufp && *p == '*') {
6957 /* Skip this comment. */
6959 U_CHAR *save_bufp = ip->bufp;
6961 p = skip_to_end_of_comment (ip, &junk, 1);
6962 ip->bufp = save_bufp;
6967 /* If we get here, this conditional is the beginning of the file. */
6972 /* Discard leading and trailing whitespace. */
6973 SKIP_WHITE_SPACE (buf);
6974 while (limit != buf && is_hor_space[limit[-1]]) limit--;
6976 /* Find the end of the identifier at the beginning. */
6977 for (end = buf; is_idchar[*end]; end++);
6980 skip = (keyword->type == T_IFDEF);
6982 pedwarn (end == limit ? "`#%s' with no argument"
6983 : "`#%s' argument starts with punctuation",
6988 if (pedantic && buf[0] >= '0' && buf[0] <= '9')
6989 pedwarn ("`#%s' argument starts with a digit", keyword->name);
6990 else if (end != limit && !traditional)
6991 pedwarn ("garbage at end of `#%s' argument", keyword->name);
6993 hp = lookup (buf, end-buf, -1);
6996 /* Output a precondition for this macro. */
6998 (hp->type == T_CONST
6999 || (hp->type == T_MACRO && hp->value.defn->predefined)))
7000 fprintf (pcp_outfile, "#define %s\n", hp->name);
7003 fprintf (pcp_outfile, "#undef ");
7004 while (is_idchar[*cp]) /* Ick! */
7005 fputc (*cp++, pcp_outfile);
7006 putc ('\n', pcp_outfile);
7010 skip = (hp == NULL) ^ (keyword->type == T_IFNDEF);
7011 if (start_of_file && !skip) {
7012 control_macro = (U_CHAR *) xmalloc (end - buf + 1);
7013 bcopy ((char *) buf, (char *) control_macro, end - buf);
7014 control_macro[end - buf] = 0;
7018 conditional_skip (ip, skip, T_IF, control_macro, op);
7022 /* Push TYPE on stack; then, if SKIP is nonzero, skip ahead.
7023 If this is a #ifndef starting at the beginning of a file,
7024 CONTROL_MACRO is the macro name tested by the #ifndef.
7025 Otherwise, CONTROL_MACRO is 0. */
7028 conditional_skip (ip, skip, type, control_macro, op)
7031 enum node_type type;
7032 U_CHAR *control_macro;
7035 IF_STACK_FRAME *temp;
7037 temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
7038 temp->fname = ip->nominal_fname;
7039 temp->lineno = ip->lineno;
7040 temp->next = if_stack;
7041 temp->control_macro = control_macro;
7044 if_stack->type = type;
7047 skip_if_group (ip, 0, op);
7050 ++if_stack->if_succeeded;
7051 output_line_command (ip, &outbuf, 1, same_file);
7056 * skip to #endif, #else, or #elif. adjust line numbers, etc.
7057 * leaves input ptr at the sharp sign found.
7058 * If ANY is nonzero, return at next directive of any sort.
7061 skip_if_group (ip, any, op)
7066 register U_CHAR *bp = ip->bufp, *cp;
7067 register U_CHAR *endb = ip->buf + ip->length;
7068 struct directive *kt;
7069 IF_STACK_FRAME *save_if_stack = if_stack; /* don't pop past here */
7070 U_CHAR *beg_of_line = bp;
7071 register int ident_length;
7072 U_CHAR *ident, *after_ident;
7073 /* Save info about where the group starts. */
7074 U_CHAR *beg_of_group = bp;
7075 int beg_lineno = ip->lineno;
7077 if (output_conditionals && op != 0) {
7078 char *ptr = "#failed\n";
7079 int len = strlen (ptr);
7081 if (op->bufp > op->buf && op->bufp[-1] != '\n')
7086 check_expand (op, len);
7087 bcopy (ptr, (char *) op->bufp, len);
7090 output_line_command (ip, op, 1, 0);
7095 case '/': /* possible comment */
7096 if (*bp == '\\' && bp[1] == '\n')
7099 || (cplusplus_comments && *bp == '/')) {
7101 bp = skip_to_end_of_comment (ip, &ip->lineno, 0);
7106 bp = skip_quoted_string (bp - 1, endb, ip->lineno, &ip->lineno,
7107 NULL_PTR, NULL_PTR);
7110 /* Char after backslash loses its special meaning. */
7113 ++ip->lineno; /* But do update the line-count. */
7122 if (beg_of_line == 0 || traditional)
7125 while (bp[0] == '\\' && bp[1] == '\n')
7131 /* # keyword: a # must be first nonblank char on the line */
7132 if (beg_of_line == 0)
7136 /* Scan from start of line, skipping whitespace, comments
7137 and backslash-newlines, and see if we reach this #.
7138 If not, this # is not special. */
7140 /* If -traditional, require # to be at beginning of line. */
7143 if (is_hor_space[*bp])
7145 else if (*bp == '\\' && bp[1] == '\n')
7147 else if (*bp == '/' && bp[1] == '*') {
7149 while (!(*bp == '*' && bp[1] == '/'))
7153 /* There is no point in trying to deal with C++ // comments here,
7154 because if there is one, then this # must be part of the
7155 comment and we would never reach here. */
7159 if (bp != ip->bufp) {
7160 bp = ip->bufp + 1; /* Reset bp to after the #. */
7164 bp = ip->bufp + 1; /* Point after the '#' */
7165 if (ip->bufp[0] == '%') {
7166 /* Skip past the ':' again. */
7167 while (*bp == '\\') {
7174 /* Skip whitespace and \-newline. */
7176 if (is_hor_space[*bp])
7178 else if (*bp == '\\' && bp[1] == '\n')
7180 else if (*bp == '/' && bp[1] == '*') {
7182 while (!(*bp == '*' && bp[1] == '/')) {
7188 } else if (cplusplus_comments && *bp == '/' && bp[1] == '/') {
7190 while (bp[-1] == '\\' || *bp != '\n') {
7201 /* Now find end of directive name.
7202 If we encounter a backslash-newline, exchange it with any following
7203 symbol-constituents so that we end up with a contiguous name. */
7209 if (*bp == '\\' && bp[1] == '\n')
7210 name_newline_fix (bp);
7216 ident_length = bp - cp;
7220 /* A line of just `#' becomes blank. */
7222 if (ident_length == 0 && *after_ident == '\n') {
7226 if (ident_length == 0 || !is_idstart[*ident]) {
7228 while (is_idchar[*p]) {
7229 if (*p < '0' || *p > '9')
7233 /* Handle # followed by a line number. */
7234 if (p != ident && !is_idchar[*p]) {
7236 pedwarn ("`#' followed by integer");
7240 /* Avoid error for `###' and similar cases unless -pedantic. */
7242 while (*p == '#' || is_hor_space[*p]) p++;
7244 if (pedantic && !lang_asm)
7245 pedwarn ("invalid preprocessor directive");
7250 if (!lang_asm && pedantic)
7251 pedwarn ("invalid preprocessor directive name");
7255 for (kt = directive_table; kt->length >= 0; kt++) {
7256 IF_STACK_FRAME *temp;
7257 if (ident_length == kt->length
7258 && strncmp (cp, kt->name, kt->length) == 0) {
7259 /* If we are asked to return on next directive, do so now. */
7267 temp = (IF_STACK_FRAME *) xcalloc (1, sizeof (IF_STACK_FRAME));
7268 temp->next = if_stack;
7270 temp->lineno = ip->lineno;
7271 temp->fname = ip->nominal_fname;
7272 temp->type = kt->type;
7276 if (pedantic && if_stack != save_if_stack)
7279 if (if_stack == instack[indepth].if_stack) {
7280 error ("`#%s' not within a conditional", kt->name);
7283 else if (if_stack == save_if_stack)
7284 goto done; /* found what we came for */
7286 if (kt->type != T_ENDIF) {
7287 if (if_stack->type == T_ELSE)
7288 error ("`#else' or `#elif' after `#else'");
7289 if_stack->type = kt->type;
7294 if_stack = if_stack->next;
7301 /* Don't let erroneous code go by. */
7302 if (kt->length < 0 && !lang_asm && pedantic)
7303 pedwarn ("invalid preprocessor directive name");
7308 /* after this returns, rescan will exit because ip->bufp
7309 now points to the end of the buffer.
7310 rescan is responsible for the error message also. */
7313 if (output_conditionals && op != 0) {
7314 char *ptr = "#endfailed\n";
7315 int len = strlen (ptr);
7317 if (op->bufp > op->buf && op->bufp[-1] != '\n')
7322 check_expand (op, beg_of_line - beg_of_group);
7323 bcopy ((char *) beg_of_group, (char *) op->bufp,
7324 beg_of_line - beg_of_group);
7325 op->bufp += beg_of_line - beg_of_group;
7326 op->lineno += ip->lineno - beg_lineno;
7327 check_expand (op, len);
7328 bcopy (ptr, (char *) op->bufp, len);
7335 * handle a #else directive. Do this by just continuing processing
7336 * without changing if_stack ; this is so that the error message
7337 * for missing #endif's etc. will point to the original #if. It
7338 * is possible that something different would be better.
7342 do_else (buf, limit, op, keyword)
7343 U_CHAR *buf, *limit;
7345 struct directive *keyword;
7347 FILE_BUF *ip = &instack[indepth];
7350 SKIP_WHITE_SPACE (buf);
7352 pedwarn ("text following `#else' violates ANSI standard");
7355 if (if_stack == instack[indepth].if_stack) {
7356 error ("`#else' not within a conditional");
7359 /* #ifndef can't have its special treatment for containing the whole file
7360 if it has a #else clause. */
7361 if_stack->control_macro = 0;
7363 if (if_stack->type != T_IF && if_stack->type != T_ELIF) {
7364 error ("`#else' after `#else'");
7365 fprintf (stderr, " (matches line %d", if_stack->lineno);
7366 if (strcmp (if_stack->fname, ip->nominal_fname) != 0)
7367 fprintf (stderr, ", file %s", if_stack->fname);
7368 fprintf (stderr, ")\n");
7370 if_stack->type = T_ELSE;
7373 if (if_stack->if_succeeded)
7374 skip_if_group (ip, 0, op);
7376 ++if_stack->if_succeeded; /* continue processing input */
7377 output_line_command (ip, op, 1, same_file);
7383 * unstack after #endif command
7387 do_endif (buf, limit, op, keyword)
7388 U_CHAR *buf, *limit;
7390 struct directive *keyword;
7393 SKIP_WHITE_SPACE (buf);
7395 pedwarn ("text following `#endif' violates ANSI standard");
7398 if (if_stack == instack[indepth].if_stack)
7399 error ("unbalanced `#endif'");
7401 IF_STACK_FRAME *temp = if_stack;
7402 if_stack = if_stack->next;
7403 if (temp->control_macro != 0) {
7404 /* This #endif matched a #ifndef at the start of the file.
7405 See if it is at the end of the file. */
7406 FILE_BUF *ip = &instack[indepth];
7407 U_CHAR *p = ip->bufp;
7408 U_CHAR *ep = ip->buf + ip->length;
7413 if (c == '/' && p != ep && *p == '*') {
7414 /* Skip this comment. */
7416 U_CHAR *save_bufp = ip->bufp;
7418 p = skip_to_end_of_comment (ip, &junk, 1);
7419 ip->bufp = save_bufp;
7424 /* If we get here, this #endif ends a #ifndef
7425 that contains all of the file (aside from whitespace).
7426 Arrange not to include the file again
7427 if the macro that was tested is defined.
7429 Do not do this for the top-level file in a -include or any
7430 file in a -imacros. */
7432 && ! (indepth == 1 && no_record_file)
7433 && ! (no_record_file && no_output))
7434 record_control_macro (ip->fname, temp->control_macro);
7438 output_line_command (&instack[indepth], op, 1, same_file);
7443 /* When an #else or #endif is found while skipping failed conditional,
7444 if -pedantic was specified, this is called to warn about text after
7445 the command name. P points to the first char after the command name. */
7451 /* Advance P over whitespace and comments. */
7453 if (*p == '\\' && p[1] == '\n')
7455 if (is_hor_space[*p])
7457 else if (*p == '/') {
7458 if (p[1] == '\\' && p[2] == '\n')
7459 newline_fix (p + 1);
7462 /* Don't bother warning about unterminated comments
7463 since that will happen later. Just be sure to exit. */
7465 if (p[1] == '\\' && p[2] == '\n')
7466 newline_fix (p + 1);
7467 if (*p == '*' && p[1] == '/') {
7474 else if (cplusplus_comments && p[1] == '/') {
7476 while (*p && (*p != '\n' || p[-1] == '\\'))
7481 if (*p && *p != '\n')
7482 pedwarn ("text following `#else' or `#endif' violates ANSI standard");
7485 /* Skip a comment, assuming the input ptr immediately follows the
7486 initial slash-star. Bump *LINE_COUNTER for each newline.
7487 (The canonical line counter is &ip->lineno.)
7488 Don't use this routine (or the next one) if bumping the line
7489 counter is not sufficient to deal with newlines in the string.
7491 If NOWARN is nonzero, don't warn about slash-star inside a comment.
7492 This feature is useful when processing a comment that is going to be
7493 processed or was processed at another point in the preprocessor,
7494 to avoid a duplicate warning. Likewise for unterminated comment errors. */
7497 skip_to_end_of_comment (ip, line_counter, nowarn)
7498 register FILE_BUF *ip;
7499 int *line_counter; /* place to remember newlines, or NULL */
7502 register U_CHAR *limit = ip->buf + ip->length;
7503 register U_CHAR *bp = ip->bufp;
7504 FILE_BUF *op = &outbuf; /* JF */
7505 int output = put_out_comments && !line_counter;
7506 int start_line = line_counter ? *line_counter : 0;
7508 /* JF this line_counter stuff is a crock to make sure the
7509 comment is only put out once, no matter how many times
7510 the comment is skipped. It almost works */
7515 if (cplusplus_comments && bp[-1] == '/') {
7517 while (bp < limit) {
7519 if (*bp == '\n' && bp[-1] != '\\')
7531 while (bp < limit) {
7532 if (bp[-1] != '\\' && *bp == '\n') {
7535 if (*bp == '\n' && line_counter)
7544 while (bp < limit) {
7549 if (warn_comments && !nowarn && bp < limit && *bp == '*')
7550 warning ("`/*' within comment");
7553 /* If this is the end of the file, we have an unterminated comment.
7554 Don't swallow the newline. We are guaranteed that there will be a
7555 trailing newline and various pieces assume it's there. */
7562 if (line_counter != NULL)
7568 if (*bp == '\\' && bp[1] == '\n')
7581 error_with_line (line_for_error (start_line), "unterminated comment");
7587 * Skip over a quoted string. BP points to the opening quote.
7588 * Returns a pointer after the closing quote. Don't go past LIMIT.
7589 * START_LINE is the line number of the starting point (but it need
7590 * not be valid if the starting point is inside a macro expansion).
7592 * The input stack state is not changed.
7594 * If COUNT_NEWLINES is nonzero, it points to an int to increment
7595 * for each newline passed.
7597 * If BACKSLASH_NEWLINES_P is nonzero, store 1 thru it
7598 * if we pass a backslash-newline.
7600 * If EOFP is nonzero, set *EOFP to 1 if the string is unterminated.
7603 skip_quoted_string (bp, limit, start_line, count_newlines, backslash_newlines_p, eofp)
7604 register U_CHAR *bp;
7605 register U_CHAR *limit;
7607 int *count_newlines;
7608 int *backslash_newlines_p;
7611 register U_CHAR c, match;
7616 error_with_line (line_for_error (start_line),
7617 "unterminated string or character constant");
7618 error_with_line (multiline_string_line,
7619 "possible real start of unterminated constant");
7620 multiline_string_line = 0;
7627 while (*bp == '\\' && bp[1] == '\n') {
7628 if (backslash_newlines_p)
7629 *backslash_newlines_p = 1;
7634 if (*bp == '\n' && count_newlines) {
7635 if (backslash_newlines_p)
7636 *backslash_newlines_p = 1;
7640 } else if (c == '\n') {
7642 /* Unterminated strings and character constants are 'valid'. */
7643 bp--; /* Don't consume the newline. */
7648 if (pedantic || match == '\'') {
7649 error_with_line (line_for_error (start_line),
7650 "unterminated string or character constant");
7656 /* If not traditional, then allow newlines inside strings. */
7659 if (multiline_string_line == 0)
7660 multiline_string_line = start_line;
7661 } else if (c == match)
7667 /* Place into DST a quoted string representing the string SRC.
7668 Return the address of DST's terminating null. */
7670 quote_string (dst, src)
7677 switch ((c = *src++))
7684 sprintf (dst, "\\%03o", c);
7702 /* Skip across a group of balanced parens, starting from IP->bufp.
7703 IP->bufp is updated. Use this with IP->bufp pointing at an open-paren.
7705 This does not handle newlines, because it's used for the arg of #if,
7706 where there aren't any newlines. Also, backslash-newline can't appear. */
7709 skip_paren_group (ip)
7710 register FILE_BUF *ip;
7712 U_CHAR *limit = ip->buf + ip->length;
7713 U_CHAR *p = ip->bufp;
7715 int lines_dummy = 0;
7717 while (p != limit) {
7727 return ip->bufp = p;
7733 p = skip_to_end_of_comment (ip, &lines_dummy, 0);
7741 p = skip_quoted_string (p - 1, limit, 0, NULL_PTR, NULL_PTR, &eofp);
7743 return ip->bufp = p;
7754 * write out a #line command, for instance, after an #include file.
7755 * If CONDITIONAL is nonzero, we can omit the #line if it would
7756 * appear to be a no-op, and we can output a few newlines instead
7757 * if we want to increase the line number by a small amount.
7758 * FILE_CHANGE says whether we are entering a file, leaving, or neither.
7762 output_line_command (ip, op, conditional, file_change)
7765 enum file_change_code file_change;
7768 char *line_cmd_buf, *line_end;
7770 if (no_line_commands
7771 || ip->fname == NULL
7773 op->lineno = ip->lineno;
7778 if (ip->lineno == op->lineno)
7781 /* If the inherited line number is a little too small,
7782 output some newlines instead of a #line command. */
7783 if (ip->lineno > op->lineno && ip->lineno < op->lineno + 8) {
7784 check_expand (op, 10);
7785 while (ip->lineno > op->lineno) {
7793 /* Don't output a line number of 0 if we can help it. */
7794 if (ip->lineno == 0 && ip->bufp - ip->buf < ip->length
7795 && *ip->bufp == '\n') {
7800 line_cmd_buf = (char *) alloca (4 * strlen (ip->nominal_fname) + 100);
7801 #ifdef OUTPUT_LINE_COMMANDS
7802 sprintf (line_cmd_buf, "#line %d ", ip->lineno);
7804 sprintf (line_cmd_buf, "# %d ", ip->lineno);
7806 line_end = quote_string (line_cmd_buf + strlen (line_cmd_buf),
7808 if (file_change != same_file) {
7810 *line_end++ = file_change == enter_file ? '1' : '2';
7812 /* Tell cc1 if following text comes from a system header file. */
7813 if (ip->system_header_p) {
7817 #ifndef NO_IMPLICIT_EXTERN_C
7818 /* Tell cc1plus if following text should be treated as C. */
7819 if (ip->system_header_p == 2 && cplusplus) {
7825 len = line_end - line_cmd_buf;
7826 check_expand (op, len + 1);
7827 if (op->bufp > op->buf && op->bufp[-1] != '\n')
7829 bcopy ((char *) line_cmd_buf, (char *) op->bufp, len);
7831 op->lineno = ip->lineno;
7834 /* This structure represents one parsed argument in a macro call.
7835 `raw' points to the argument text as written (`raw_length' is its length).
7836 `expanded' points to the argument's macro-expansion
7837 (its length is `expand_length').
7838 `stringified_length' is the length the argument would have
7840 `use_count' is the number of times this macro arg is substituted
7841 into the macro. If the actual use count exceeds 10,
7842 the value stored is 10.
7843 `free1' and `free2', if nonzero, point to blocks to be freed
7844 when the macro argument data is no longer needed. */
7847 U_CHAR *raw, *expanded;
7848 int raw_length, expand_length;
7849 int stringified_length;
7850 U_CHAR *free1, *free2;
7856 /* Expand a macro call.
7857 HP points to the symbol that is the macro being called.
7858 Put the result of expansion onto the input stack
7859 so that subsequent input by our caller will use it.
7861 If macro wants arguments, caller has already verified that
7862 an argument list follows; arguments come from the input stack. */
7865 macroexpand (hp, op)
7870 DEFINITION *defn = hp->value.defn;
7871 register U_CHAR *xbuf;
7873 int start_line = instack[indepth].lineno;
7874 int rest_args, rest_zero;
7876 CHECK_DEPTH (return;);
7878 /* it might not actually be a macro. */
7879 if (hp->type != T_MACRO) {
7880 special_symbol (hp, op);
7884 /* This macro is being used inside a #if, which means it must be */
7885 /* recorded as a precondition. */
7886 if (pcp_inside_if && pcp_outfile && defn->predefined)
7887 dump_single_macro (hp, pcp_outfile);
7889 nargs = defn->nargs;
7893 struct argdata *args;
7894 char *parse_error = 0;
7896 args = (struct argdata *) alloca ((nargs + 1) * sizeof (struct argdata));
7898 for (i = 0; i < nargs; i++) {
7899 args[i].raw = (U_CHAR *) "";
7900 args[i].expanded = 0;
7901 args[i].raw_length = args[i].expand_length
7902 = args[i].stringified_length = 0;
7903 args[i].free1 = args[i].free2 = 0;
7904 args[i].use_count = 0;
7907 /* Parse all the macro args that are supplied. I counts them.
7908 The first NARGS args are stored in ARGS.
7909 The rest are discarded.
7910 If rest_args is set then we assume macarg absorbed the rest of the args.
7915 /* Discard the open-parenthesis or comma before the next arg. */
7916 ++instack[indepth].bufp;
7919 if (i < nargs || (nargs == 0 && i == 0)) {
7920 /* if we are working on last arg which absorbs rest of args... */
7921 if (i == nargs - 1 && defn->rest_args)
7923 parse_error = macarg (&args[i], rest_args);
7926 parse_error = macarg (NULL_PTR, 0);
7928 error_with_line (line_for_error (start_line), parse_error);
7932 } while (*instack[indepth].bufp != ')');
7934 /* If we got one arg but it was just whitespace, call that 0 args. */
7936 register U_CHAR *bp = args[0].raw;
7937 register U_CHAR *lim = bp + args[0].raw_length;
7938 /* cpp.texi says for foo ( ) we provide one argument.
7939 However, if foo wants just 0 arguments, treat this as 0. */
7941 while (bp != lim && is_space[*bp]) bp++;
7946 /* Don't output an error message if we have already output one for
7947 a parse error above. */
7949 if (nargs == 0 && i > 0) {
7951 error ("arguments given to macro `%s'", hp->name);
7952 } else if (i < nargs) {
7953 /* traditional C allows foo() if foo wants one argument. */
7954 if (nargs == 1 && i == 0 && traditional)
7956 /* the rest args token is allowed to absorb 0 tokens */
7957 else if (i == nargs - 1 && defn->rest_args)
7959 else if (parse_error)
7962 error ("macro `%s' used without args", hp->name);
7964 error ("macro `%s' used with just one arg", hp->name);
7966 error ("macro `%s' used with only %d args", hp->name, i);
7967 } else if (i > nargs) {
7969 error ("macro `%s' used with too many (%d) args", hp->name, i);
7972 /* Swallow the closeparen. */
7973 ++instack[indepth].bufp;
7975 /* If macro wants zero args, we parsed the arglist for checking only.
7976 Read directly from the macro definition. */
7978 xbuf = defn->expansion;
7979 xbuf_len = defn->length;
7981 register U_CHAR *exp = defn->expansion;
7982 register int offset; /* offset in expansion,
7983 copied a piece at a time */
7984 register int totlen; /* total amount of exp buffer filled so far */
7986 register struct reflist *ap, *last_ap;
7988 /* Macro really takes args. Compute the expansion of this call. */
7990 /* Compute length in characters of the macro's expansion.
7991 Also count number of times each arg is used. */
7992 xbuf_len = defn->length;
7993 for (ap = defn->pattern; ap != NULL; ap = ap->next) {
7995 xbuf_len += args[ap->argno].stringified_length;
7996 else if (ap->raw_before || ap->raw_after || traditional)
7997 /* Add 4 for two newline-space markers to prevent
7998 token concatenation. */
7999 xbuf_len += args[ap->argno].raw_length + 4;
8001 /* We have an ordinary (expanded) occurrence of the arg.
8002 So compute its expansion, if we have not already. */
8003 if (args[ap->argno].expanded == 0) {
8005 obuf = expand_to_temp_buffer (args[ap->argno].raw,
8006 args[ap->argno].raw + args[ap->argno].raw_length,
8009 args[ap->argno].expanded = obuf.buf;
8010 args[ap->argno].expand_length = obuf.length;
8011 args[ap->argno].free2 = obuf.buf;
8014 /* Add 4 for two newline-space markers to prevent
8015 token concatenation. */
8016 xbuf_len += args[ap->argno].expand_length + 4;
8018 if (args[ap->argno].use_count < 10)
8019 args[ap->argno].use_count++;
8022 xbuf = (U_CHAR *) xmalloc (xbuf_len + 1);
8024 /* Generate in XBUF the complete expansion
8025 with arguments substituted in.
8026 TOTLEN is the total size generated so far.
8027 OFFSET is the index in the definition
8028 of where we are copying from. */
8029 offset = totlen = 0;
8030 for (last_ap = NULL, ap = defn->pattern; ap != NULL;
8031 last_ap = ap, ap = ap->next) {
8032 register struct argdata *arg = &args[ap->argno];
8033 int count_before = totlen;
8035 /* Add chars to XBUF. */
8036 for (i = 0; i < ap->nchars; i++, offset++)
8037 xbuf[totlen++] = exp[offset];
8039 /* If followed by an empty rest arg with concatenation,
8040 delete the last run of nonwhite chars. */
8041 if (rest_zero && totlen > count_before
8042 && ((ap->rest_args && ap->raw_before)
8043 || (last_ap != NULL && last_ap->rest_args
8044 && last_ap->raw_after))) {
8045 /* Delete final whitespace. */
8046 while (totlen > count_before && is_space[xbuf[totlen - 1]]) {
8050 /* Delete the nonwhites before them. */
8051 while (totlen > count_before && ! is_space[xbuf[totlen - 1]]) {
8056 if (ap->stringify != 0) {
8057 int arglen = arg->raw_length;
8063 && (c = arg->raw[i], is_space[c]))
8066 && (c = arg->raw[arglen - 1], is_space[c]))
8069 xbuf[totlen++] = '\"'; /* insert beginning quote */
8070 for (; i < arglen; i++) {
8073 /* Special markers Newline Space
8074 generate nothing for a stringified argument. */
8075 if (c == '\n' && arg->raw[i+1] != '\n') {
8080 /* Internal sequences of whitespace are replaced by one space
8081 except within an string or char token. */
8083 && (c == '\n' ? arg->raw[i+1] == '\n' : is_space[c])) {
8085 /* Note that Newline Space does occur within whitespace
8086 sequences; consider it part of the sequence. */
8087 if (c == '\n' && is_space[arg->raw[i+1]])
8089 else if (c != '\n' && is_space[c])
8106 } else if (c == '\"' || c == '\'')
8110 /* Escape these chars */
8111 if (c == '\"' || (in_string && c == '\\'))
8112 xbuf[totlen++] = '\\';
8116 sprintf ((char *) &xbuf[totlen], "\\%03o", (unsigned int) c);
8121 xbuf[totlen++] = '\"'; /* insert ending quote */
8122 } else if (ap->raw_before || ap->raw_after || traditional) {
8123 U_CHAR *p1 = arg->raw;
8124 U_CHAR *l1 = p1 + arg->raw_length;
8125 if (ap->raw_before) {
8126 while (p1 != l1 && is_space[*p1]) p1++;
8127 while (p1 != l1 && is_idchar[*p1])
8128 xbuf[totlen++] = *p1++;
8129 /* Delete any no-reexpansion marker that follows
8130 an identifier at the beginning of the argument
8131 if the argument is concatenated with what precedes it. */
8132 if (p1[0] == '\n' && p1[1] == '-')
8134 } else if (!traditional) {
8135 /* Ordinary expanded use of the argument.
8136 Put in newline-space markers to prevent token pasting. */
8137 xbuf[totlen++] = '\n';
8138 xbuf[totlen++] = ' ';
8140 if (ap->raw_after) {
8141 /* Arg is concatenated after: delete trailing whitespace,
8142 whitespace markers, and no-reexpansion markers. */
8144 if (is_space[l1[-1]]) l1--;
8145 else if (l1[-1] == '-') {
8146 U_CHAR *p2 = l1 - 1;
8147 /* If a `-' is preceded by an odd number of newlines then it
8148 and the last newline are a no-reexpansion marker. */
8149 while (p2 != p1 && p2[-1] == '\n') p2--;
8150 if ((l1 - 1 - p2) & 1) {
8159 bcopy ((char *) p1, (char *) (xbuf + totlen), l1 - p1);
8161 if (!traditional && !ap->raw_after) {
8162 /* Ordinary expanded use of the argument.
8163 Put in newline-space markers to prevent token pasting. */
8164 xbuf[totlen++] = '\n';
8165 xbuf[totlen++] = ' ';
8168 /* Ordinary expanded use of the argument.
8169 Put in newline-space markers to prevent token pasting. */
8171 xbuf[totlen++] = '\n';
8172 xbuf[totlen++] = ' ';
8174 bcopy ((char *) arg->expanded, (char *) (xbuf + totlen),
8175 arg->expand_length);
8176 totlen += arg->expand_length;
8178 xbuf[totlen++] = '\n';
8179 xbuf[totlen++] = ' ';
8181 /* If a macro argument with newlines is used multiple times,
8182 then only expand the newlines once. This avoids creating output
8183 lines which don't correspond to any input line, which confuses
8185 if (arg->use_count > 1 && arg->newlines > 0) {
8186 /* Don't bother doing change_newlines for subsequent
8190 = change_newlines (arg->expanded, arg->expand_length);
8194 if (totlen > xbuf_len)
8198 /* if there is anything left of the definition
8199 after handling the arg list, copy that in too. */
8201 for (i = offset; i < defn->length; i++) {
8202 /* if we've reached the end of the macro */
8205 if (! (rest_zero && last_ap != NULL && last_ap->rest_args
8206 && last_ap->raw_after))
8207 xbuf[totlen++] = exp[i];
8213 for (i = 0; i < nargs; i++) {
8214 if (args[i].free1 != 0)
8215 free (args[i].free1);
8216 if (args[i].free2 != 0)
8217 free (args[i].free2);
8221 xbuf = defn->expansion;
8222 xbuf_len = defn->length;
8225 /* Now put the expansion on the input stack
8226 so our caller will commence reading from it. */
8228 register FILE_BUF *ip2;
8230 ip2 = &instack[++indepth];
8233 ip2->nominal_fname = 0;
8234 /* This may not be exactly correct, but will give much better error
8235 messages for nested macro calls than using a line number of zero. */
8236 ip2->lineno = start_line;
8238 ip2->length = xbuf_len;
8240 ip2->free_ptr = (nargs > 0) ? xbuf : 0;
8242 ip2->if_stack = if_stack;
8243 ip2->system_header_p = 0;
8245 /* Recursive macro use sometimes works traditionally.
8246 #define foo(x,y) bar (x (y,0), y)
8250 hp->type = T_DISABLED;
8255 * Parse a macro argument and store the info on it into *ARGPTR.
8256 * REST_ARGS is passed to macarg1 to make it absorb the rest of the args.
8257 * Return nonzero to indicate a syntax error.
8261 macarg (argptr, rest_args)
8262 register struct argdata *argptr;
8265 FILE_BUF *ip = &instack[indepth];
8270 /* Try to parse as much of the argument as exists at this
8271 input stack level. */
8272 U_CHAR *bp = macarg1 (ip->bufp, ip->buf + ip->length,
8273 &paren, &newlines, &comments, rest_args);
8275 /* If we find the end of the argument at this level,
8276 set up *ARGPTR to point at it in the input stack. */
8277 if (!(ip->fname != 0 && (newlines != 0 || comments != 0))
8278 && bp != ip->buf + ip->length) {
8280 argptr->raw = ip->bufp;
8281 argptr->raw_length = bp - ip->bufp;
8282 argptr->newlines = newlines;
8286 /* This input stack level ends before the macro argument does.
8287 We must pop levels and keep parsing.
8288 Therefore, we must allocate a temporary buffer and copy
8289 the macro argument into it. */
8290 int bufsize = bp - ip->bufp;
8291 int extra = newlines;
8292 U_CHAR *buffer = (U_CHAR *) xmalloc (bufsize + extra + 1);
8293 int final_start = 0;
8295 bcopy ((char *) ip->bufp, (char *) buffer, bufsize);
8297 ip->lineno += newlines;
8299 while (bp == ip->buf + ip->length) {
8300 if (instack[indepth].macro == 0) {
8302 return "unterminated macro call";
8304 ip->macro->type = T_MACRO;
8306 free (ip->free_ptr);
8307 ip = &instack[--indepth];
8310 bp = macarg1 (ip->bufp, ip->buf + ip->length, &paren,
8311 &newlines, &comments, rest_args);
8312 final_start = bufsize;
8313 bufsize += bp - ip->bufp;
8315 buffer = (U_CHAR *) xrealloc (buffer, bufsize + extra + 1);
8316 bcopy ((char *) ip->bufp, (char *) (buffer + bufsize - (bp - ip->bufp)),
8319 ip->lineno += newlines;
8322 /* Now, if arg is actually wanted, record its raw form,
8323 discarding comments and duplicating newlines in whatever
8324 part of it did not come from a macro expansion.
8325 EXTRA space has been preallocated for duplicating the newlines.
8326 FINAL_START is the index of the start of that part. */
8328 argptr->raw = buffer;
8329 argptr->raw_length = bufsize;
8330 argptr->free1 = buffer;
8331 argptr->newlines = newlines;
8332 argptr->comments = comments;
8333 if ((newlines || comments) && ip->fname != 0)
8336 discard_comments (argptr->raw + final_start,
8337 argptr->raw_length - final_start,
8339 argptr->raw[argptr->raw_length] = 0;
8340 if (argptr->raw_length > bufsize + extra)
8345 /* If we are not discarding this argument,
8346 macroexpand it and compute its length as stringified.
8347 All this info goes into *ARGPTR. */
8350 register U_CHAR *buf, *lim;
8351 register int totlen;
8354 lim = buf + argptr->raw_length;
8356 while (buf != lim && is_space[*buf])
8358 while (buf != lim && is_space[lim[-1]])
8360 totlen = traditional ? 0 : 2; /* Count opening and closing quote. */
8361 while (buf != lim) {
8362 register U_CHAR c = *buf++;
8364 /* Internal sequences of whitespace are replaced by one space
8365 in most cases, but not always. So count all the whitespace
8366 in case we need to keep it all. */
8369 SKIP_ALL_WHITE_SPACE (buf);
8372 if (c == '\"' || c == '\\') /* escape these chars */
8374 else if (!isprint (c))
8377 argptr->stringified_length = totlen;
8382 /* Scan text from START (inclusive) up to LIMIT (exclusive),
8383 counting parens in *DEPTHPTR,
8384 and return if reach LIMIT
8385 or before a `)' that would make *DEPTHPTR negative
8386 or before a comma when *DEPTHPTR is zero.
8387 Single and double quotes are matched and termination
8388 is inhibited within them. Comments also inhibit it.
8389 Value returned is pointer to stopping place.
8391 Increment *NEWLINES each time a newline is passed.
8392 REST_ARGS notifies macarg1 that it should absorb the rest of the args.
8393 Set *COMMENTS to 1 if a comment is seen. */
8396 macarg1 (start, limit, depthptr, newlines, comments, rest_args)
8398 register U_CHAR *limit;
8399 int *depthptr, *newlines, *comments;
8402 register U_CHAR *bp = start;
8404 while (bp < limit) {
8410 if (--(*depthptr) < 0)
8414 /* Traditionally, backslash makes following char not special. */
8415 if (bp + 1 < limit && traditional)
8418 /* But count source lines anyway. */
8427 if (bp[1] == '\\' && bp[2] == '\n')
8428 newline_fix (bp + 1);
8429 if (cplusplus_comments && bp[1] == '/') {
8432 while (bp < limit && (*bp != '\n' || bp[-1] == '\\')) {
8433 if (*bp == '\n') ++*newlines;
8436 /* Now count the newline that we are about to skip. */
8440 if (bp[1] != '*' || bp + 1 >= limit)
8444 while (bp + 1 < limit) {
8446 && bp[1] == '\\' && bp[2] == '\n')
8447 newline_fix (bp + 1);
8448 if (bp[0] == '*' && bp[1] == '/')
8450 if (*bp == '\n') ++*newlines;
8458 for (quotec = *bp++; bp + 1 < limit && *bp != quotec; bp++) {
8463 while (*bp == '\\' && bp[1] == '\n') {
8466 } else if (*bp == '\n') {
8475 /* if we've returned to lowest level and we aren't absorbing all args */
8476 if ((*depthptr) == 0 && rest_args == 0)
8486 /* Discard comments and duplicate newlines
8487 in the string of length LENGTH at START,
8488 except inside of string constants.
8489 The string is copied into itself with its beginning staying fixed.
8491 NEWLINES is the number of newlines that must be duplicated.
8492 We assume that that much extra space is available past the end
8496 discard_comments (start, length, newlines)
8501 register U_CHAR *ibp;
8502 register U_CHAR *obp;
8503 register U_CHAR *limit;
8506 /* If we have newlines to duplicate, copy everything
8507 that many characters up. Then, in the second part,
8508 we will have room to insert the newlines
8510 NEWLINES may actually be too large, because it counts
8511 newlines in string constants, and we don't duplicate those.
8512 But that does no harm. */
8514 ibp = start + length;
8515 obp = ibp + newlines;
8517 while (limit != ibp)
8521 ibp = start + newlines;
8522 limit = start + length + newlines;
8525 while (ibp < limit) {
8526 *obp++ = c = *ibp++;
8529 /* Duplicate the newline. */
8541 if (*ibp == '\\' && ibp[1] == '\n')
8543 /* Delete any comment. */
8544 if (cplusplus_comments && ibp[0] == '/') {
8545 /* Comments are equivalent to spaces. */
8548 while (ibp < limit && (*ibp != '\n' || ibp[-1] == '\\'))
8552 if (ibp[0] != '*' || ibp + 1 >= limit)
8554 /* Comments are equivalent to spaces.
8555 For -traditional, a comment is equivalent to nothing. */
8561 while (ibp + 1 < limit) {
8563 && ibp[1] == '\\' && ibp[2] == '\n')
8564 newline_fix (ibp + 1);
8565 if (ibp[0] == '*' && ibp[1] == '/')
8574 /* Notice and skip strings, so that we don't
8575 think that comments start inside them,
8576 and so we don't duplicate newlines in them. */
8579 while (ibp < limit) {
8580 *obp++ = c = *ibp++;
8583 if (c == '\n' && quotec == '\'')
8585 if (c == '\\' && ibp < limit) {
8586 while (*ibp == '\\' && ibp[1] == '\n')
8599 /* Turn newlines to spaces in the string of length LENGTH at START,
8600 except inside of string constants.
8601 The string is copied into itself with its beginning staying fixed. */
8604 change_newlines (start, length)
8608 register U_CHAR *ibp;
8609 register U_CHAR *obp;
8610 register U_CHAR *limit;
8614 limit = start + length;
8617 while (ibp < limit) {
8618 *obp++ = c = *ibp++;
8621 /* If this is a NEWLINE NEWLINE, then this is a real newline in the
8622 string. Skip past the newline and its duplicate.
8623 Put a space in the output. */
8634 /* Notice and skip strings, so that we don't delete newlines in them. */
8637 while (ibp < limit) {
8638 *obp++ = c = *ibp++;
8641 if (c == '\n' && quotec == '\'')
8653 * my_strerror - return the descriptive text associated with an `errno' code.
8657 my_strerror (errnum)
8663 #ifndef HAVE_STRERROR
8664 result = (char *) ((errnum < sys_nerr) ? sys_errlist[errnum] : 0);
8666 result = strerror (errnum);
8669 /* VAXCRTL's strerror() takes an optional second argument, which only
8670 matters when the first argument is EVMSERR. However, it's simplest
8671 just to pass it unconditionally. `vaxc$errno' is declared in
8672 <errno.h>, and maintained by the library in parallel with `errno'.
8673 We assume that caller's `errnum' either matches the last setting of
8674 `errno' by the library or else does not have the value `EVMSERR'. */
8676 result = strerror (errnum, vaxc$errno);
8680 result = "undocumented I/O error";
8686 * error - print error message and increment count of errors.
8690 error (msg, arg1, arg2, arg3)
8692 char *arg1, *arg2, *arg3;
8695 FILE_BUF *ip = NULL;
8697 print_containing_files ();
8699 for (i = indepth; i >= 0; i--)
8700 if (instack[i].fname != NULL) {
8706 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8707 fprintf (stderr, msg, arg1, arg2, arg3);
8708 fprintf (stderr, "\n");
8712 /* Error including a message from `errno'. */
8715 error_from_errno (name)
8719 FILE_BUF *ip = NULL;
8721 print_containing_files ();
8723 for (i = indepth; i >= 0; i--)
8724 if (instack[i].fname != NULL) {
8730 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8732 fprintf (stderr, "%s: %s\n", name, my_strerror (errno));
8737 /* Print error message but don't count it. */
8740 warning (msg, arg1, arg2, arg3)
8742 char *arg1, *arg2, *arg3;
8745 FILE_BUF *ip = NULL;
8747 if (inhibit_warnings)
8750 if (warnings_are_errors)
8753 print_containing_files ();
8755 for (i = indepth; i >= 0; i--)
8756 if (instack[i].fname != NULL) {
8762 fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
8763 fprintf (stderr, "warning: ");
8764 fprintf (stderr, msg, arg1, arg2, arg3);
8765 fprintf (stderr, "\n");
8769 error_with_line (line, msg, arg1, arg2, arg3)
8772 char *arg1, *arg2, *arg3;
8775 FILE_BUF *ip = NULL;
8777 print_containing_files ();
8779 for (i = indepth; i >= 0; i--)
8780 if (instack[i].fname != NULL) {
8786 fprintf (stderr, "%s:%d: ", ip->nominal_fname, line);
8787 fprintf (stderr, msg, arg1, arg2, arg3);
8788 fprintf (stderr, "\n");
8793 warning_with_line (line, msg, arg1, arg2, arg3)
8796 char *arg1, *arg2, *arg3;
8799 FILE_BUF *ip = NULL;
8801 if (inhibit_warnings)
8804 if (warnings_are_errors)
8807 print_containing_files ();
8809 for (i = indepth; i >= 0; i--)
8810 if (instack[i].fname != NULL) {
8816 fprintf (stderr, "%s:%d: ", ip->nominal_fname, line);
8817 fprintf (stderr, "warning: ");
8818 fprintf (stderr, msg, arg1, arg2, arg3);
8819 fprintf (stderr, "\n");
8822 /* print an error message and maybe count it. */
8825 pedwarn (msg, arg1, arg2, arg3)
8827 char *arg1, *arg2, *arg3;
8829 if (pedantic_errors)
8830 error (msg, arg1, arg2, arg3);
8832 warning (msg, arg1, arg2, arg3);
8836 pedwarn_with_line (line, msg, arg1, arg2, arg3)
8839 char *arg1, *arg2, *arg3;
8841 if (pedantic_errors)
8842 error_with_line (line, msg, arg1, arg2, arg3);
8844 warning_with_line (line, msg, arg1, arg2, arg3);
8847 /* Report a warning (or an error if pedantic_errors)
8848 giving specified file name and line number, not current. */
8851 pedwarn_with_file_and_line (file, line, msg, arg1, arg2, arg3)
8855 char *arg1, *arg2, *arg3;
8857 if (!pedantic_errors && inhibit_warnings)
8860 fprintf (stderr, "%s:%d: ", file, line);
8861 if (pedantic_errors)
8863 if (!pedantic_errors)
8864 fprintf (stderr, "warning: ");
8865 fprintf (stderr, msg, arg1, arg2, arg3);
8866 fprintf (stderr, "\n");
8869 /* Print the file names and line numbers of the #include
8870 commands which led to the current file. */
8873 print_containing_files ()
8875 FILE_BUF *ip = NULL;
8879 /* If stack of files hasn't changed since we last printed
8880 this info, don't repeat it. */
8881 if (last_error_tick == input_file_stack_tick)
8884 for (i = indepth; i >= 0; i--)
8885 if (instack[i].fname != NULL) {
8890 /* Give up if we don't find a source file. */
8894 /* Find the other, outer source files. */
8895 for (i--; i >= 0; i--)
8896 if (instack[i].fname != NULL) {
8900 fprintf (stderr, "In file included");
8902 fprintf (stderr, ",\n ");
8905 fprintf (stderr, " from %s:%d", ip->nominal_fname, ip->lineno);
8908 fprintf (stderr, ":\n");
8910 /* Record we have printed the status as of this time. */
8911 last_error_tick = input_file_stack_tick;
8914 /* Return the line at which an error occurred.
8915 The error is not necessarily associated with the current spot
8916 in the input stack, so LINE says where. LINE will have been
8917 copied from ip->lineno for the current input level.
8918 If the current level is for a file, we return LINE.
8919 But if the current level is not for a file, LINE is meaningless.
8920 In that case, we return the lineno of the innermost file. */
8923 line_for_error (line)
8929 for (i = indepth; i >= 0; ) {
8930 if (instack[i].fname != 0)
8935 line1 = instack[i].lineno;
8943 * If OBUF doesn't have NEEDED bytes after OPTR, make it bigger.
8945 * As things stand, nothing is ever placed in the output buffer to be
8946 * removed again except when it's KNOWN to be part of an identifier,
8947 * so flushing and moving down everything left, instead of expanding,
8951 /* You might think void was cleaner for the return type,
8952 but that would get type mismatch in check_expand in strict ANSI. */
8954 grow_outbuf (obuf, needed)
8955 register FILE_BUF *obuf;
8956 register int needed;
8961 if (obuf->length - (obuf->bufp - obuf->buf) > needed)
8964 /* Make it at least twice as big as it is now. */
8966 /* Make it have at least 150% of the free space we will need. */
8967 minsize = (3 * needed) / 2 + (obuf->bufp - obuf->buf);
8968 if (minsize > obuf->length)
8969 obuf->length = minsize;
8971 if ((p = (U_CHAR *) xrealloc (obuf->buf, obuf->length)) == NULL)
8974 obuf->bufp = p + (obuf->bufp - obuf->buf);
8980 /* Symbol table for macro names and special symbols */
8983 * install a name in the main hash table, even if it is already there.
8984 * name stops with first non alphanumeric, except leading '#'.
8985 * caller must check against redefinition if that is desired.
8986 * delete_macro () removes things installed by install () in fifo order.
8987 * this is important because of the `defined' special symbol used
8988 * in #if, and also if pushdef/popdef directives are ever implemented.
8990 * If LEN is >= 0, it is the length of the name.
8991 * Otherwise, compute the length by scanning the entire name.
8993 * If HASH is >= 0, it is the precomputed hash code.
8994 * Otherwise, compute the hash code.
8997 install (name, len, type, value, hash)
9000 enum node_type type;
9004 register HASHNODE *hp;
9005 register int i, bucket;
9006 register U_CHAR *p, *q;
9010 while (is_idchar[*p])
9016 hash = hashf (name, len, HASHSIZE);
9018 i = sizeof (HASHNODE) + len + 1;
9019 hp = (HASHNODE *) xmalloc (i);
9021 hp->bucket_hdr = &hashtab[bucket];
9022 hp->next = hashtab[bucket];
9023 hashtab[bucket] = hp;
9025 if (hp->next != NULL)
9026 hp->next->prev = hp;
9029 hp->value.cpval = value;
9030 hp->name = ((U_CHAR *) hp) + sizeof (HASHNODE);
9033 for (i = 0; i < len; i++)
9040 * find the most recent hash node for name name (ending with first
9041 * non-identifier char) installed by install
9043 * If LEN is >= 0, it is the length of the name.
9044 * Otherwise, compute the length by scanning the entire name.
9046 * If HASH is >= 0, it is the precomputed hash code.
9047 * Otherwise, compute the hash code.
9050 lookup (name, len, hash)
9055 register U_CHAR *bp;
9056 register HASHNODE *bucket;
9059 for (bp = name; is_idchar[*bp]; bp++) ;
9064 hash = hashf (name, len, HASHSIZE);
9066 bucket = hashtab[hash];
9068 if (bucket->length == len && strncmp (bucket->name, name, len) == 0)
9070 bucket = bucket->next;
9076 * Delete a hash node. Some weirdness to free junk from macros.
9077 * More such weirdness will have to be added if you define more hash
9078 * types that need it.
9081 /* Note that the DEFINITION of a macro is removed from the hash table
9082 but its storage is not freed. This would be a storage leak
9083 except that it is not reasonable to keep undefining and redefining
9084 large numbers of macros many times.
9085 In any case, this is necessary, because a macro can be #undef'd
9086 in the middle of reading the arguments to a call to it.
9087 If #undef freed the DEFINITION, that would crash. */
9094 if (hp->prev != NULL)
9095 hp->prev->next = hp->next;
9096 if (hp->next != NULL)
9097 hp->next->prev = hp->prev;
9099 /* make sure that the bucket chain header that
9100 the deleted guy was on points to the right thing afterwards. */
9101 if (hp == *hp->bucket_hdr)
9102 *hp->bucket_hdr = hp->next;
9105 if (hp->type == T_MACRO) {
9106 DEFINITION *d = hp->value.defn;
9107 struct reflist *ap, *nextap;
9109 for (ap = d->pattern; ap != NULL; ap = nextap) {
9120 * return hash function on name. must be compatible with the one
9121 * computed a step at a time, elsewhere
9124 hashf (name, len, hashsize)
9125 register U_CHAR *name;
9132 r = HASHSTEP (r, *name++);
9134 return MAKE_POS (r) % hashsize;
9138 /* Dump the definition of a single macro HP to OF. */
9140 dump_single_macro (hp, of)
9141 register HASHNODE *hp;
9144 register DEFINITION *defn = hp->value.defn;
9150 /* Print the definition of the macro HP. */
9152 fprintf (of, "#define %s", hp->name);
9154 if (defn->nargs >= 0) {
9158 for (i = 0; i < defn->nargs; i++) {
9159 dump_arg_n (defn, i, of);
9160 if (i + 1 < defn->nargs)
9170 for (ap = defn->pattern; ap != NULL; ap = ap->next) {
9171 dump_defn_1 (defn->expansion, offset, ap->nchars, of);
9172 offset += ap->nchars;
9174 if (ap->nchars != 0)
9176 if (ap->stringify) {
9177 switch (ap->stringify) {
9178 case SHARP_TOKEN: fprintf (of, "#"); break;
9179 case WHITE_SHARP_TOKEN: fprintf (of, "# "); break;
9180 case PERCENT_COLON_TOKEN: fprintf (of, "%:"); break;
9181 case WHITE_PERCENT_COLON_TOKEN: fprintf (of, "%: "); break;
9184 if (ap->raw_before) {
9186 switch (ap->raw_before) {
9187 case WHITE_SHARP_TOKEN:
9188 case WHITE_PERCENT_COLON_TOKEN:
9193 switch (ap->raw_before) {
9194 case SHARP_TOKEN: fprintf (of, "##"); break;
9195 case WHITE_SHARP_TOKEN: fprintf (of, "## "); break;
9196 case PERCENT_COLON_TOKEN: fprintf (of, "%:%:"); break;
9197 case WHITE_PERCENT_COLON_TOKEN: fprintf (of, "%:%: "); break;
9203 dump_arg_n (defn, ap->argno, of);
9204 if (!traditional && ap->raw_after) {
9205 switch (ap->raw_after) {
9206 case SHARP_TOKEN: fprintf (of, "##"); break;
9207 case WHITE_SHARP_TOKEN: fprintf (of, " ##"); break;
9208 case PERCENT_COLON_TOKEN: fprintf (of, "%:%:"); break;
9209 case WHITE_PERCENT_COLON_TOKEN: fprintf (of, " %:%:"); break;
9214 dump_defn_1 (defn->expansion, offset, defn->length - offset, of);
9218 /* Dump all macro definitions as #defines to stdout. */
9225 for (bucket = 0; bucket < HASHSIZE; bucket++) {
9226 register HASHNODE *hp;
9228 for (hp = hashtab[bucket]; hp; hp= hp->next) {
9229 if (hp->type == T_MACRO)
9230 dump_single_macro (hp, stdout);
9235 /* Output to OF a substring of a macro definition.
9236 BASE is the beginning of the definition.
9237 Output characters START thru LENGTH.
9238 Unless traditional, discard newlines outside of strings, thus
9239 converting funny-space markers to ordinary spaces. */
9242 dump_defn_1 (base, start, length, of)
9248 U_CHAR *p = base + start;
9249 U_CHAR *limit = base + start + length;
9252 fwrite (p, sizeof (*p), length, of);
9255 if (*p == '\"' || *p =='\'') {
9256 U_CHAR *p1 = skip_quoted_string (p, limit, 0, NULL_PTR,
9257 NULL_PTR, NULL_PTR);
9258 fwrite (p, sizeof (*p), p1 - p, of);
9269 /* Print the name of argument number ARGNUM of macro definition DEFN
9271 Recall that DEFN->args.argnames contains all the arg names
9272 concatenated in reverse order with comma-space in between. */
9275 dump_arg_n (defn, argnum, of)
9280 register U_CHAR *p = defn->args.argnames;
9281 while (argnum + 1 < defn->nargs) {
9282 p = (U_CHAR *) index (p, ' ') + 1;
9286 while (*p && *p != ',') {
9292 /* Initialize syntactic classifications of characters. */
9295 initialize_char_syntax ()
9300 * Set up is_idchar and is_idstart tables. These should be
9301 * faster than saying (is_alpha (c) || c == '_'), etc.
9302 * Set up these things before calling any routines tthat
9305 for (i = 'a'; i <= 'z'; i++) {
9306 is_idchar[i - 'a' + 'A'] = 1;
9308 is_idstart[i - 'a' + 'A'] = 1;
9311 for (i = '0'; i <= '9'; i++)
9314 is_idstart['_'] = 1;
9315 is_idchar['$'] = dollars_in_ident;
9316 is_idstart['$'] = dollars_in_ident;
9318 /* horizontal space table */
9319 is_hor_space[' '] = 1;
9320 is_hor_space['\t'] = 1;
9321 is_hor_space['\v'] = 1;
9322 is_hor_space['\f'] = 1;
9323 is_hor_space['\r'] = 1;
9332 char_name['\v'] = "vertical tab";
9333 char_name['\f'] = "formfeed";
9334 char_name['\r'] = "carriage return";
9337 /* Initialize the built-in macros. */
9340 initialize_builtins (inp, outp)
9344 install ("__LINE__", -1, T_SPECLINE, NULL_PTR, -1);
9345 install ("__DATE__", -1, T_DATE, NULL_PTR, -1);
9346 install ("__FILE__", -1, T_FILE, NULL_PTR, -1);
9347 install ("__BASE_FILE__", -1, T_BASE_FILE, NULL_PTR, -1);
9348 install ("__INCLUDE_LEVEL__", -1, T_INCLUDE_LEVEL, NULL_PTR, -1);
9349 install ("__VERSION__", -1, T_VERSION, NULL_PTR, -1);
9350 #ifndef NO_BUILTIN_SIZE_TYPE
9351 install ("__SIZE_TYPE__", -1, T_SIZE_TYPE, NULL_PTR, -1);
9353 #ifndef NO_BUILTIN_PTRDIFF_TYPE
9354 install ("__PTRDIFF_TYPE__ ", -1, T_PTRDIFF_TYPE, NULL_PTR, -1);
9356 install ("__WCHAR_TYPE__", -1, T_WCHAR_TYPE, NULL_PTR, -1);
9357 install ("__USER_LABEL_PREFIX__",-1,T_USER_LABEL_PREFIX_TYPE, NULL_PTR, -1);
9358 install ("__REGISTER_PREFIX__", -1, T_REGISTER_PREFIX_TYPE, NULL_PTR, -1);
9359 install ("__TIME__", -1, T_TIME, NULL_PTR, -1);
9361 install ("__STDC__", -1, T_CONST, "1", -1);
9362 install ("__STDC_VERSION__", -1, T_CONST, "199409L", -1);
9365 install ("__OBJC__", -1, T_CONST, "1", -1);
9366 /* This is supplied using a -D by the compiler driver
9367 so that it is present only when truly compiling with GNU C. */
9368 /* install ("__GNUC__", -1, T_CONST, "2", -1); */
9372 char directive[2048];
9373 register struct directive *dp = &directive_table[0];
9374 struct tm *timebuf = timestamp ();
9376 sprintf (directive, " __BASE_FILE__ \"%s\"\n",
9377 instack[0].nominal_fname);
9378 output_line_command (inp, outp, 0, same_file);
9379 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9381 sprintf (directive, " __VERSION__ \"%s\"\n", version_string);
9382 output_line_command (inp, outp, 0, same_file);
9383 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9385 #ifndef NO_BUILTIN_SIZE_TYPE
9386 sprintf (directive, " __SIZE_TYPE__ %s\n", SIZE_TYPE);
9387 output_line_command (inp, outp, 0, same_file);
9388 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9391 #ifndef NO_BUILTIN_PTRDIFF_TYPE
9392 sprintf (directive, " __PTRDIFF_TYPE__ %s\n", PTRDIFF_TYPE);
9393 output_line_command (inp, outp, 0, same_file);
9394 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9397 sprintf (directive, " __WCHAR_TYPE__ %s\n", wchar_type);
9398 output_line_command (inp, outp, 0, same_file);
9399 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9401 sprintf (directive, " __DATE__ \"%s %2d %4d\"\n",
9402 monthnames[timebuf->tm_mon],
9403 timebuf->tm_mday, timebuf->tm_year + 1900);
9404 output_line_command (inp, outp, 0, same_file);
9405 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9407 sprintf (directive, " __TIME__ \"%02d:%02d:%02d\"\n",
9408 timebuf->tm_hour, timebuf->tm_min, timebuf->tm_sec);
9409 output_line_command (inp, outp, 0, same_file);
9410 pass_thru_directive (directive, &directive[strlen (directive)], outp, dp);
9414 sprintf (directive, " __STDC__ 1");
9415 output_line_command (inp, outp, 0, same_file);
9416 pass_thru_directive (directive, &directive[strlen (directive)],
9421 sprintf (directive, " __OBJC__ 1");
9422 output_line_command (inp, outp, 0, same_file);
9423 pass_thru_directive (directive, &directive[strlen (directive)],
9430 * process a given definition string, for initialization
9431 * If STR is just an identifier, define it with value 1.
9432 * If STR has anything after the identifier, then it should
9433 * be identifier=definition.
9437 make_definition (str, op)
9442 struct directive *kt;
9447 if (!is_idstart[*p]) {
9448 error ("malformed option `-D %s'", str);
9451 while (is_idchar[*++p])
9454 while (is_idchar[*++p] || *p == ',' || is_hor_space[*p])
9457 p = str; /* Error */
9460 buf = (U_CHAR *) alloca (p - buf + 4);
9461 strcpy ((char *)buf, str);
9462 strcat ((char *)buf, " 1");
9463 } else if (*p != '=') {
9464 error ("malformed option `-D %s'", str);
9468 /* Copy the entire option so we can modify it. */
9469 buf = (U_CHAR *) alloca (2 * strlen (str) + 1);
9470 strncpy (buf, str, p - str);
9471 /* Change the = to a space. */
9473 /* Scan for any backslash-newline and remove it. */
9477 if (*p == '\"' || *p == '\'') {
9478 int unterminated = 0;
9479 U_CHAR *p1 = skip_quoted_string (p, p + strlen (p), 0,
9480 NULL_PTR, NULL_PTR, &unterminated);
9484 if (*p == '\\' && p[1] == '\n')
9488 } else if (*p == '\\' && p[1] == '\n')
9490 /* Change newline chars into newline-markers. */
9491 else if (*p == '\n')
9503 ip = &instack[++indepth];
9504 ip->nominal_fname = ip->fname = "*Initialization*";
9506 ip->buf = ip->bufp = buf;
9507 ip->length = strlen (buf);
9511 ip->if_stack = if_stack;
9512 ip->system_header_p = 0;
9514 for (kt = directive_table; kt->type != T_DEFINE; kt++)
9517 /* Pass NULL instead of OP, since this is a "predefined" macro. */
9518 do_define (buf, buf + strlen (buf), NULL_PTR, kt);
9522 /* JF, this does the work for the -U option */
9525 make_undef (str, op)
9530 struct directive *kt;
9532 ip = &instack[++indepth];
9533 ip->nominal_fname = ip->fname = "*undef*";
9535 ip->buf = ip->bufp = str;
9536 ip->length = strlen (str);
9540 ip->if_stack = if_stack;
9541 ip->system_header_p = 0;
9543 for (kt = directive_table; kt->type != T_UNDEF; kt++)
9546 do_undef (str, str + strlen (str), op, kt);
9550 /* Process the string STR as if it appeared as the body of a #assert.
9551 OPTION is the option name for which STR was the argument. */
9554 make_assertion (option, str)
9559 struct directive *kt;
9560 U_CHAR *buf, *p, *q;
9562 /* Copy the entire option so we can modify it. */
9563 buf = (U_CHAR *) alloca (strlen (str) + 1);
9564 strcpy ((char *) buf, str);
9565 /* Scan for any backslash-newline and remove it. */
9568 if (*p == '\\' && p[1] == '\n')
9576 if (!is_idstart[*p]) {
9577 error ("malformed option `%s %s'", option, str);
9580 while (is_idchar[*++p])
9582 SKIP_WHITE_SPACE (p);
9583 if (! (*p == 0 || *p == '(')) {
9584 error ("malformed option `%s %s'", option, str);
9588 ip = &instack[++indepth];
9589 ip->nominal_fname = ip->fname = "*Initialization*";
9591 ip->buf = ip->bufp = buf;
9592 ip->length = strlen (buf);
9596 ip->if_stack = if_stack;
9597 ip->system_header_p = 0;
9599 for (kt = directive_table; kt->type != T_ASSERT; kt++)
9602 /* pass NULL as output ptr to do_define since we KNOW it never
9603 does any output.... */
9604 do_assert (buf, buf + strlen (buf) , NULL_PTR, kt);
9608 /* Append a chain of `struct file_name_list's
9609 to the end of the main include chain.
9610 FIRST is the beginning of the chain to append, and LAST is the end. */
9613 append_include_chain (first, last)
9614 struct file_name_list *first, *last;
9616 struct file_name_list *dir;
9618 if (!first || !last)
9624 last_include->next = first;
9626 if (first_bracket_include == 0)
9627 first_bracket_include = first;
9629 for (dir = first; ; dir = dir->next) {
9630 int len = strlen (dir->fname) + INCLUDE_LEN_FUDGE;
9631 if (len > max_include_len)
9632 max_include_len = len;
9638 last_include = last;
9641 /* Add output to `deps_buffer' for the -M switch.
9642 STRING points to the text to be output.
9643 SPACER is ':' for targets, ' ' for dependencies, zero for text
9644 to be inserted literally. */
9647 deps_output (string, spacer)
9651 int size = strlen (string);
9656 #ifndef MAX_OUTPUT_COLUMNS
9657 #define MAX_OUTPUT_COLUMNS 72
9661 && (deps_column + size) > MAX_OUTPUT_COLUMNS)
9663 deps_output (" \\\n ", 0);
9667 if (deps_size + size + 8 > deps_allocated_size) {
9668 deps_allocated_size = (deps_size + size + 50) * 2;
9669 deps_buffer = (char *) xrealloc (deps_buffer, deps_allocated_size);
9671 if (spacer == ' ' && deps_column > 0)
9672 deps_buffer[deps_size++] = ' ';
9673 bcopy (string, &deps_buffer[deps_size], size);
9675 deps_column += size;
9677 deps_buffer[deps_size++] = ':';
9678 deps_buffer[deps_size] = 0;
9681 #if defined(USG) || defined(VMS)
9687 register unsigned length;
9689 while (length-- > 0)
9694 bcopy (b1, b2, length)
9697 register unsigned length;
9699 while (length-- > 0)
9704 bcmp (b1, b2, length) /* This could be a macro! */
9707 register unsigned length;
9709 while (length-- > 0)
9715 #endif /* not BSTRING */
9716 #endif /* USG or VMS */
9723 fprintf (stderr, "%s: ", progname);
9724 fprintf (stderr, str, arg);
9725 fprintf (stderr, "\n");
9726 exit (FAILURE_EXIT_CODE);
9729 /* More 'friendly' abort that prints the line and file.
9730 config.h can #define abort fancy_abort if you like that sort of thing. */
9735 fatal ("Internal gcc abort.");
9739 perror_with_name (name)
9742 fprintf (stderr, "%s: ", progname);
9743 fprintf (stderr, "%s: %s\n", name, my_strerror (errno));
9748 pfatal_with_name (name)
9751 perror_with_name (name);
9755 exit (FAILURE_EXIT_CODE);
9759 /* Handler for SIGPIPE. */
9763 /* If this is missing, some compilers complain. */
9766 fatal ("output pipe has been closed");
9772 fatal ("Memory exhausted.");
9780 register char *ptr = (char *) malloc (size);
9781 if (ptr != 0) return (ptr);
9788 xrealloc (old, size)
9792 register char *ptr = (char *) realloc (old, size);
9793 if (ptr != 0) return (ptr);
9800 xcalloc (number, size)
9801 unsigned number, size;
9803 register unsigned total = number * size;
9804 register char *ptr = (char *) malloc (total);
9809 /* It's not too long, so loop, zeroing by longs.
9810 It must be safe because malloc values are always well aligned. */
9811 register long *zp = (long *) ptr;
9812 register long *zl = (long *) (ptr + total - 4);
9813 register int i = total - 4;
9832 unsigned size = strlen (input);
9833 char *output = xmalloc (size + 1);
9834 strcpy (output, input);
9838 /* Get the file-mode and data size of the file open on FD
9839 and store them in *MODE_POINTER and *SIZE_POINTER. */
9842 file_size_and_mode (fd, mode_pointer, size_pointer)
9845 long int *size_pointer;
9849 if (fstat (fd, &sbuf) < 0) return (-1);
9850 if (mode_pointer) *mode_pointer = sbuf.st_mode;
9851 if (size_pointer) *size_pointer = sbuf.st_size;
9856 output_dots (fd, depth)
9869 /* Under VMS we need to fix up the "include" specification
9870 filename so that everything following the 1st slash is
9871 changed into its correct VMS file specification. */
9874 hack_vms_include_specification (fname)
9877 register char *cp, *cp1, *cp2;
9878 int f, check_filename_before_returning, no_prefix_seen;
9881 check_filename_before_returning = 0;
9884 /* Ignore leading "./"s */
9885 while (fname[0] == '.' && fname[1] == '/') {
9886 strcpy (fname, fname+2);
9887 no_prefix_seen = 1; /* mark this for later */
9889 /* Look for the boundary between the VMS and UNIX filespecs */
9890 cp = rindex (fname, ']'); /* Look for end of dirspec. */
9891 if (cp == 0) cp = rindex (fname, '>'); /* ... Ditto */
9892 if (cp == 0) cp = rindex (fname, ':'); /* Look for end of devspec. */
9896 cp = index (fname, '/'); /* Look for the "/" */
9900 * Check if we have a vax-c style '#include filename'
9901 * and add the missing .h
9904 if (index(fname,'.') == 0)
9905 strcat(fname, ".h");
9907 if (index(cp,'.') == 0)
9911 cp2 = Local; /* initialize */
9913 /* We are trying to do a number of things here. First of all, we are
9914 trying to hammer the filenames into a standard format, such that later
9915 processing can handle them.
9917 If the file name contains something like [dir.], then it recognizes this
9918 as a root, and strips the ".]". Later processing will add whatever is
9919 needed to get things working properly.
9921 If no device is specified, then the first directory name is taken to be
9922 a device name (or a rooted logical). */
9924 /* See if we found that 1st slash */
9925 if (cp == 0) return; /* Nothing to do!!! */
9926 if (*cp != '/') return; /* Nothing to do!!! */
9927 /* Point to the UNIX filename part (which needs to be fixed!) */
9929 /* If the directory spec is not rooted, we can just copy
9930 the UNIX filename part and we are done */
9931 if (((cp - fname) > 1) && ((cp[-1] == ']') || (cp[-1] == '>'))) {
9932 if (cp[-2] != '.') {
9934 * The VMS part ends in a `]', and the preceding character is not a `.'.
9935 * We strip the `]', and then splice the two parts of the name in the
9936 * usual way. Given the default locations for include files in cccp.c,
9937 * we will only use this code if the user specifies alternate locations
9938 * with the /include (-I) switch on the command line. */
9939 cp -= 1; /* Strip "]" */
9940 cp1--; /* backspace */
9943 * The VMS part has a ".]" at the end, and this will not do. Later
9944 * processing will add a second directory spec, and this would be a syntax
9945 * error. Thus we strip the ".]", and thus merge the directory specs.
9946 * We also backspace cp1, so that it points to a '/'. This inhibits the
9947 * generation of the 000000 root directory spec (which does not belong here
9950 cp -= 2; /* Strip ".]" */
9951 cp1--; }; /* backspace */
9954 /* We drop in here if there is no VMS style directory specification yet.
9955 * If there is no device specification either, we make the first dir a
9956 * device and try that. If we do not do this, then we will be essentially
9957 * searching the users default directory (as if they did a #include "asdf.h").
9959 * Then all we need to do is to push a '[' into the output string. Later
9960 * processing will fill this in, and close the bracket.
9962 if (cp[-1] != ':') *cp2++ = ':'; /* dev not in spec. take first dir */
9963 *cp2++ = '['; /* Open the directory specification */
9966 /* at this point we assume that we have the device spec, and (at least
9967 the opening "[" for a directory specification. We may have directories
9968 specified already */
9970 /* If there are no other slashes then the filename will be
9971 in the "root" directory. Otherwise, we need to add
9972 directory specifications. */
9973 if (index (cp1, '/') == 0) {
9974 /* Just add "000000]" as the directory string */
9975 strcpy (cp2, "000000]");
9976 cp2 += strlen (cp2);
9977 check_filename_before_returning = 1; /* we might need to fool with this later */
9979 /* As long as there are still subdirectories to add, do them. */
9980 while (index (cp1, '/') != 0) {
9981 /* If this token is "." we can ignore it */
9982 if ((cp1[0] == '.') && (cp1[1] == '/')) {
9986 /* Add a subdirectory spec. Do not duplicate "." */
9987 if (cp2[-1] != '.' && cp2[-1] != '[' && cp2[-1] != '<')
9989 /* If this is ".." then the spec becomes "-" */
9990 if ((cp1[0] == '.') && (cp1[1] == '.') && (cp[2] == '/')) {
9991 /* Add "-" and skip the ".." */
9996 /* Copy the subdirectory */
9997 while (*cp1 != '/') *cp2++= *cp1++;
9998 cp1++; /* Skip the "/" */
10000 /* Close the directory specification */
10001 if (cp2[-1] == '.') /* no trailing periods */
10005 /* Now add the filename */
10006 while (*cp1) *cp2++ = *cp1++;
10008 /* Now append it to the original VMS spec. */
10009 strcpy (cp, Local);
10011 /* If we put a [000000] in the filename, try to open it first. If this fails,
10012 remove the [000000], and return that name. This provides flexibility
10013 to the user in that they can use both rooted and non-rooted logical names
10014 to point to the location of the file. */
10016 if (check_filename_before_returning && no_prefix_seen) {
10017 f = open (fname, O_RDONLY, 0666);
10019 /* The file name is OK as it is, so return it as is. */
10023 /* The filename did not work. Try to remove the [000000] from the name,
10025 cp = index (fname, '[');
10026 cp2 = index (fname, ']') + 1;
10027 strcpy (cp, cp2); /* this gets rid of it */
10035 /* These are the read/write replacement routines for
10036 VAX-11 "C". They make read/write behave enough
10037 like their UNIX counterparts that CCCP will work */
10040 read (fd, buf, size)
10045 #undef read /* Get back the REAL read routine */
10047 register int total = 0;
10049 /* Read until the buffer is exhausted */
10051 /* Limit each read to 32KB */
10052 i = (size > (32*1024)) ? (32*1024) : size;
10053 i = read (fd, buf, i);
10055 if (i == 0) return (total);
10058 /* Account for this read */
10067 write (fd, buf, size)
10072 #undef write /* Get back the REAL write routine */
10076 /* Limit individual writes to 32Kb */
10079 j = (i > (32*1024)) ? (32*1024) : i;
10080 if (write (fd, buf, j) < 0) return (-1);
10081 /* Account for the data written */
10088 /* The following wrapper functions supply additional arguments to the VMS
10089 I/O routines to optimize performance with file handling. The arguments
10091 "mbc=16" - Set multi-block count to 16 (use a 8192 byte buffer).
10092 "deq=64" - When extending the file, extend it in chunks of 32Kbytes.
10093 "fop=tef"- Truncate unused portions of file when closing file.
10094 "shr=nil"- Disallow file sharing while file is open.
10098 freopen (fname, type, oldfile)
10103 #undef freopen /* Get back the REAL fopen routine */
10104 if (strcmp (type, "w") == 0)
10105 return freopen (fname, type, oldfile, "mbc=16", "deq=64", "fop=tef", "shr=nil");
10106 return freopen (fname, type, oldfile, "mbc=16");
10110 fopen (fname, type)
10114 #undef fopen /* Get back the REAL fopen routine */
10115 /* The gcc-vms-1.42 distribution's header files prototype fopen with two
10116 fixed arguments, which matches ANSI's specification but not VAXCRTL's
10117 pre-ANSI implmentation. This hack circumvents the mismatch problem. */
10118 FILE *(*vmslib_fopen)() = (FILE *(*)()) fopen;
10121 return (*vmslib_fopen) (fname, type, "mbc=32",
10122 "deq=64", "fop=tef", "shr=nil");
10124 return (*vmslib_fopen) (fname, type, "mbc=32");
10128 open (fname, flags, prot)
10133 #undef open /* Get back the REAL open routine */
10134 return open (fname, flags, prot, "mbc=16", "deq=64", "fop=tef");
10137 /* Avoid run-time library bug, where copying M out of N+M characters with
10138 N >= 65535 results in VAXCRTL's strncat falling into an infinite loop.
10139 gcc-cpp exercises this particular bug. */
10142 strncat (dst, src, cnt)
10147 register char *d = dst, *s = (char *) src;
10148 register int n = cnt; /* convert to _signed_ type */
10150 while (*d) d++; /* advance to end */
10152 if (!(*d++ = *s++)) break;
10153 if (n < 0) *d = '\0';