1 /* Definitions for CPP library.
2 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
3 Free Software Foundation, Inc.
4 Written by Per Bothner, 1994-95.
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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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! */
26 #include <sys/types.h>
27 #include "hashtable.h"
34 /* For complex reasons, cpp_reader is also typedefed in c-pragma.h. */
35 #ifndef GCC_C_PRAGMA_H
36 typedef struct cpp_reader cpp_reader;
38 typedef struct cpp_buffer cpp_buffer;
39 typedef struct cpp_options cpp_options;
40 typedef struct cpp_token cpp_token;
41 typedef struct cpp_string cpp_string;
42 typedef struct cpp_hashnode cpp_hashnode;
43 typedef struct cpp_macro cpp_macro;
44 typedef struct cpp_callbacks cpp_callbacks;
47 struct file_name_map_list;
49 /* The first two groups, apart from '=', can appear in preprocessor
50 expressions. This allows a lookup table to be implemented in
53 The first group, to CPP_LAST_EQ, can be immediately followed by an
54 '='. The lexer needs operators ending in '=', like ">>=", to be in
55 the same order as their counterparts without the '=', like ">>". */
57 /* Positions in the table. */
58 #define CPP_LAST_EQ CPP_MAX
59 #define CPP_FIRST_DIGRAPH CPP_HASH
60 #define CPP_LAST_PUNCTUATOR CPP_DOT_STAR
65 OP(CPP_GREATER, ">") /* compare */ \
67 OP(CPP_PLUS, "+") /* math */ \
72 OP(CPP_AND, "&") /* bit ops */ \
75 OP(CPP_RSHIFT, ">>") \
76 OP(CPP_LSHIFT, "<<") \
77 OP(CPP_MIN, "<?") /* extension */ \
81 OP(CPP_AND_AND, "&&") /* logical */ \
85 OP(CPP_COMMA, ",") /* grouping */ \
86 OP(CPP_OPEN_PAREN, "(") \
87 OP(CPP_CLOSE_PAREN, ")") \
88 OP(CPP_EQ_EQ, "==") /* compare */ \
89 OP(CPP_NOT_EQ, "!=") \
90 OP(CPP_GREATER_EQ, ">=") \
91 OP(CPP_LESS_EQ, "<=") \
93 OP(CPP_PLUS_EQ, "+=") /* math */ \
94 OP(CPP_MINUS_EQ, "-=") \
95 OP(CPP_MULT_EQ, "*=") \
96 OP(CPP_DIV_EQ, "/=") \
97 OP(CPP_MOD_EQ, "%=") \
98 OP(CPP_AND_EQ, "&=") /* bit ops */ \
100 OP(CPP_XOR_EQ, "^=") \
101 OP(CPP_RSHIFT_EQ, ">>=") \
102 OP(CPP_LSHIFT_EQ, "<<=") \
103 OP(CPP_MIN_EQ, "<?=") /* extension */ \
104 OP(CPP_MAX_EQ, ">?=") \
105 /* Digraphs together, beginning with CPP_FIRST_DIGRAPH. */ \
106 OP(CPP_HASH, "#") /* digraphs */ \
107 OP(CPP_PASTE, "##") \
108 OP(CPP_OPEN_SQUARE, "[") \
109 OP(CPP_CLOSE_SQUARE, "]") \
110 OP(CPP_OPEN_BRACE, "{") \
111 OP(CPP_CLOSE_BRACE, "}") \
112 /* The remainder of the punctuation. Order is not significant. */ \
113 OP(CPP_SEMICOLON, ";") /* structure */ \
114 OP(CPP_ELLIPSIS, "...") \
115 OP(CPP_PLUS_PLUS, "++") /* increment */ \
116 OP(CPP_MINUS_MINUS, "--") \
117 OP(CPP_DEREF, "->") /* accessors */ \
119 OP(CPP_SCOPE, "::") \
120 OP(CPP_DEREF_STAR, "->*") \
121 OP(CPP_DOT_STAR, ".*") \
122 OP(CPP_ATSIGN, "@") /* used in Objective C */ \
124 TK(CPP_NAME, SPELL_IDENT) /* word */ \
125 TK(CPP_NUMBER, SPELL_NUMBER) /* 34_be+ta */ \
127 TK(CPP_CHAR, SPELL_STRING) /* 'char' */ \
128 TK(CPP_WCHAR, SPELL_STRING) /* L'char' */ \
129 TK(CPP_OTHER, SPELL_CHAR) /* stray punctuation */ \
131 TK(CPP_STRING, SPELL_STRING) /* "string" */ \
132 TK(CPP_WSTRING, SPELL_STRING) /* L"string" */ \
133 TK(CPP_HEADER_NAME, SPELL_STRING) /* <stdio.h> in #include */ \
135 TK(CPP_COMMENT, SPELL_NUMBER) /* Only if output comments. */ \
136 /* SPELL_NUMBER happens to DTRT. */ \
137 TK(CPP_MACRO_ARG, SPELL_NONE) /* Macro argument. */ \
138 TK(CPP_PADDING, SPELL_NONE) /* Whitespace for cpp0. */ \
139 TK(CPP_EOF, SPELL_NONE) /* End of line or file. */
151 /* C language kind, used when calling cpp_reader_init. */
152 enum c_lang {CLK_GNUC89 = 0, CLK_GNUC99, CLK_STDC89, CLK_STDC94, CLK_STDC99,
153 CLK_GNUCXX, CLK_CXX98, CLK_OBJC, CLK_OBJCXX, CLK_ASM};
155 /* Payload of a NUMBER, STRING, CHAR or COMMENT token. */
159 const unsigned char *text;
162 /* Flags for the cpp_token structure. */
163 #define PREV_WHITE (1 << 0) /* If whitespace before this token. */
164 #define DIGRAPH (1 << 1) /* If it was a digraph. */
165 #define STRINGIFY_ARG (1 << 2) /* If macro argument to be stringified. */
166 #define PASTE_LEFT (1 << 3) /* If on LHS of a ## operator. */
167 #define NAMED_OP (1 << 4) /* C++ named operators. */
168 #define NO_EXPAND (1 << 5) /* Do not macro-expand this token. */
169 #define BOL (1 << 6) /* Token at beginning of line. */
171 /* A preprocessing token. This has been carefully packed and should
172 occupy 16 bytes on 32-bit hosts and 24 bytes on 64-bit hosts. */
175 unsigned int line; /* Logical line of first char of token. */
176 unsigned short col; /* Column of first char of token. */
177 ENUM_BITFIELD(cpp_ttype) type : CHAR_BIT; /* token type */
178 unsigned char flags; /* flags - see above */
182 cpp_hashnode *node; /* An identifier. */
183 const cpp_token *source; /* Inherit padding from this token. */
184 struct cpp_string str; /* A string, or number. */
185 unsigned int arg_no; /* Argument no. for a CPP_MACRO_ARG. */
186 unsigned char c; /* Character represented by CPP_OTHER. */
190 /* A standalone character. We may want to make it unsigned for the
191 same reason we use unsigned char - to avoid signedness issues. */
192 typedef int cppchar_t;
194 /* Values for opts.dump_macros.
195 dump_only means inhibit output of the preprocessed text
196 and instead output the definitions of all user-defined
197 macros in a form suitable for use as input to cpp.
198 dump_names means pass #define and the macro name through to output.
199 dump_definitions means pass the whole definition (plus #define) through
201 enum { dump_none = 0, dump_only, dump_names, dump_definitions };
203 /* This structure is nested inside struct cpp_reader, and
204 carries all the options visible to the command line. */
207 /* Name of input and output files. */
208 const char *in_fname;
209 const char *out_fname;
211 /* Characters between tab stops. */
212 unsigned int tabstop;
214 /* Pending options - -D, -U, -A, -I, -ixxx. */
215 struct cpp_pending *pending;
217 /* File name which deps are being written to. This is 0 if deps are
218 being written to stdout. */
219 const char *deps_file;
221 /* Search paths for include files. */
222 struct search_path *quote_include; /* "" */
223 struct search_path *bracket_include; /* <> */
225 /* Map between header names and file names, used only on DOS where
226 file names are limited in length. */
227 struct file_name_map_list *map_list;
229 /* Directory prefix that should replace `/usr/lib/gcc-lib/TARGET/VERSION'
230 in the standard include file directories. */
231 const char *include_prefix;
232 unsigned int include_prefix_len;
234 /* -fleading_underscore sets this to "_". */
235 const char *user_label_prefix;
237 /* The language we're preprocessing. */
240 /* Non-0 means -v, so print the full set of include dirs. */
241 unsigned char verbose;
243 /* Nonzero means chars are signed. */
244 unsigned char signed_char;
246 /* Nonzero means use extra default include directories for C++. */
247 unsigned char cplusplus;
249 /* Nonzero means handle cplusplus style comments */
250 unsigned char cplusplus_comments;
252 /* Nonzero means handle #import, for objective C. */
255 /* Nonzero means don't copy comments into the output file. */
256 unsigned char discard_comments;
258 /* Nonzero means don't copy comments into the output file during
260 unsigned char discard_comments_in_macro_exp;
262 /* Nonzero means process the ISO trigraph sequences. */
263 unsigned char trigraphs;
265 /* Nonzero means process the ISO digraph sequences. */
266 unsigned char digraphs;
268 /* Nonzero means to allow hexadecimal floats and LL suffixes. */
269 unsigned char extended_numbers;
271 /* Nonzero means print the names of included files rather than the
272 preprocessed output. 1 means just the #include "...", 2 means
273 #include <...> as well. */
274 unsigned char print_deps;
276 /* Nonzero if phony targets are created for each header. */
277 unsigned char deps_phony_targets;
279 /* Nonzero if missing .h files in -M output are assumed to be
280 generated files and not errors. */
281 unsigned char print_deps_missing_files;
283 /* If true, fopen (deps_file, "a") else fopen (deps_file, "w"). */
284 unsigned char print_deps_append;
286 /* Nonzero means print names of header files (-H). */
287 unsigned char print_include_names;
289 /* Nonzero means cpp_pedwarn causes a hard error. */
290 unsigned char pedantic_errors;
292 /* Nonzero means don't print warning messages. */
293 unsigned char inhibit_warnings;
295 /* Nonzero means don't suppress warnings from system headers. */
296 unsigned char warn_system_headers;
298 /* Nonzero means don't print error messages. Has no option to
299 select it, but can be set by a user of cpplib (e.g. fix-header). */
300 unsigned char inhibit_errors;
302 /* Nonzero means warn if slash-star appears in a comment. */
303 unsigned char warn_comments;
305 /* Nonzero means warn if there are any trigraphs. */
306 unsigned char warn_trigraphs;
308 /* Nonzero means warn if #import is used. */
309 unsigned char warn_import;
311 /* Nonzero means warn about various incompatibilities with
313 unsigned char warn_traditional;
315 /* Nonzero means warn about text after an #endif (or #else). */
316 unsigned char warn_endif_labels;
318 /* Nonzero means turn warnings into errors. */
319 unsigned char warnings_are_errors;
321 /* Nonzero causes output not to be done, but directives such as
322 #define that have side effects are still obeyed. */
323 unsigned char no_output;
325 /* Nonzero means we should look for header.gcc files that remap file
329 /* Nonzero means don't output line number information. */
330 unsigned char no_line_commands;
332 /* Nonzero means -I- has been seen, so don't look for #include "foo"
333 the source-file directory. */
334 unsigned char ignore_srcdir;
336 /* Zero means dollar signs are punctuation. */
337 unsigned char dollars_in_ident;
339 /* Nonzero means warn if undefined identifiers are evaluated in an #if. */
340 unsigned char warn_undef;
342 /* Nonzero for the 1999 C Standard, including corrigenda and amendments. */
345 /* Nonzero means give all the error messages the ANSI standard requires. */
346 unsigned char pedantic;
348 /* Nonzero means we're looking at already preprocessed code, so don't
349 bother trying to do macro expansion and whatnot. */
350 unsigned char preprocessed;
352 /* Nonzero disables all the standard directories for headers. */
353 unsigned char no_standard_includes;
355 /* Nonzero disables the C++-specific standard directories for headers. */
356 unsigned char no_standard_cplusplus_includes;
358 /* Nonzero means dump macros in some fashion - see above. */
359 unsigned char dump_macros;
361 /* Nonzero means pass #include lines through to the output. */
362 unsigned char dump_includes;
364 /* Print column number in error messages. */
365 unsigned char show_column;
367 /* Nonzero means handle C++ alternate operator names. */
368 unsigned char operator_names;
370 /* True if --help, --version or --target-help appeared in the
371 options. Stand-alone CPP should then bail out after option
372 parsing; drivers might want to continue printing help. */
373 unsigned char help_only;
379 /* Called when a new line of preprocessed output is started. */
380 void (*line_change) PARAMS ((cpp_reader *, const cpp_token *, int));
381 void (*file_change) PARAMS ((cpp_reader *, const struct line_map *));
382 void (*include) PARAMS ((cpp_reader *, unsigned int,
383 const unsigned char *, const cpp_token *));
384 void (*define) PARAMS ((cpp_reader *, unsigned int, cpp_hashnode *));
385 void (*undef) PARAMS ((cpp_reader *, unsigned int, cpp_hashnode *));
386 void (*ident) PARAMS ((cpp_reader *, unsigned int, const cpp_string *));
387 void (*def_pragma) PARAMS ((cpp_reader *, unsigned int));
390 #define CPP_FATAL_LIMIT 1000
391 /* True if we have seen a "fatal" error. */
392 #define CPP_FATAL_ERRORS(PFILE) (cpp_errors (PFILE) >= CPP_FATAL_LIMIT)
394 /* Name under which this program was invoked. */
395 extern const char *progname;
397 /* The structure of a node in the hash table. The hash table has
398 entries for all identifiers: either macros defined by #define
399 commands (type NT_MACRO), assertions created with #assert
400 (NT_ASSERTION), or neither of the above (NT_VOID). Builtin macros
401 like __LINE__ are flagged NODE_BUILTIN. Poisioned identifiers are
402 flagged NODE_POISONED. NODE_OPERATOR (C++ only) indicates an
403 identifier that behaves like an operator such as "xor".
404 NODE_DIAGNOSTIC is for speed in lex_token: it indicates a
405 diagnostic may be required for this node. Currently this only
406 applies to __VA_ARGS__ and poisoned identifiers. */
408 /* Hash node flags. */
409 #define NODE_OPERATOR (1 << 0) /* C++ named operator. */
410 #define NODE_POISONED (1 << 1) /* Poisoned identifier. */
411 #define NODE_BUILTIN (1 << 2) /* Builtin macro. */
412 #define NODE_DIAGNOSTIC (1 << 3) /* Possible diagnostic when lexed. */
413 #define NODE_WARN (1 << 4) /* Warn if redefined or undefined. */
414 #define NODE_DISABLED (1 << 5) /* A disabled macro. */
416 /* Different flavors of hash node. */
419 NT_VOID = 0, /* No definition yet. */
420 NT_MACRO, /* A macro of some form. */
421 NT_ASSERTION /* Predicate for #assert. */
424 /* Different flavors of builtin macro. _Pragma is an operator, but we
425 handle it with the builtin code for efficiency reasons. */
428 BT_SPECLINE = 0, /* `__LINE__' */
429 BT_DATE, /* `__DATE__' */
430 BT_FILE, /* `__FILE__' */
431 BT_BASE_FILE, /* `__BASE_FILE__' */
432 BT_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
433 BT_TIME, /* `__TIME__' */
434 BT_STDC, /* `__STDC__' */
435 BT_PRAGMA /* `_Pragma' operator */
438 #define CPP_HASHNODE(HNODE) ((cpp_hashnode *) (HNODE))
439 #define HT_NODE(NODE) ((ht_identifier *) (NODE))
440 #define NODE_LEN(NODE) HT_LEN (&(NODE)->ident)
441 #define NODE_NAME(NODE) HT_STR (&(NODE)->ident)
443 /* The common part of an identifier node shared amongst all 3 C front
444 ends. Also used to store CPP identifiers, which are a superset of
445 identifiers in the grammatical sense. */
448 struct ht_identifier ident;
449 unsigned short arg_index; /* Macro argument index. */
450 unsigned char directive_index; /* Index into directive table. */
451 unsigned char rid_code; /* Rid code - for front ends. */
452 ENUM_BITFIELD(node_type) type : 8; /* CPP node type. */
453 unsigned char flags; /* CPP flags. */
457 cpp_macro *macro; /* If a macro. */
458 struct answer *answers; /* Answers to an assertion. */
459 enum cpp_ttype operator; /* Code for a named operator. */
460 enum builtin_type builtin; /* Code for a builtin macro. */
464 /* Call this first to get a handle to pass to other functions. */
465 extern cpp_reader *cpp_create_reader PARAMS ((enum c_lang));
467 /* Call these to get pointers to the options and callback structures
468 for a given reader. These pointers are good until you call
469 cpp_finish on that reader. You can either edit the callbacks
470 through the pointer returned from cpp_get_callbacks, or set them
471 with cpp_set_callbacks. */
472 extern cpp_options *cpp_get_options PARAMS ((cpp_reader *));
473 extern const struct line_maps *cpp_get_line_maps PARAMS ((cpp_reader *));
474 extern cpp_callbacks *cpp_get_callbacks PARAMS ((cpp_reader *));
475 extern void cpp_set_callbacks PARAMS ((cpp_reader *, cpp_callbacks *));
477 /* Now call cpp_handle_option[s] to handle 1[or more] switches. The
478 return value is the number of arguments used. If
479 cpp_handle_options returns without using all arguments, it couldn't
480 understand the next switch. When there are no switches left, you
481 must call cpp_post_options before calling cpp_read_main_file. Only
482 after cpp_post_options are the contents of the cpp_options
483 structure reliable. Options processing is not completed until you
484 call cpp_finish_options. */
485 extern int cpp_handle_options PARAMS ((cpp_reader *, int, char **));
486 extern int cpp_handle_option PARAMS ((cpp_reader *, int, char **, int));
487 extern void cpp_post_options PARAMS ((cpp_reader *));
489 /* This function reads the file, but does not start preprocessing. It
490 returns the name of the original file; this is the same as the
491 input file, except for preprocessed input. This will generate at
492 least one file change callback, and possibly a line change callback
493 too. If there was an error opening the file, it returns NULL.
495 If you want cpplib to manage its own hashtable, pass in a NULL
496 pointer. Otherise you should pass in an initialised hash table
497 that cpplib will share; this technique is used by the C front
499 extern const char *cpp_read_main_file PARAMS ((cpp_reader *, const char *,
502 /* Deferred handling of command line options that can generate debug
503 callbacks, such as -D and -imacros. Call this after
504 cpp_read_main_file. The front ends need this separation so they
505 can initialize debug output with the original file name, returned
506 from cpp_read_main_file, before they get debug callbacks. */
507 extern void cpp_finish_options PARAMS ((cpp_reader *));
509 /* Call this to release the handle at the end of preprocessing. Any
510 use of the handle after this function returns is invalid. Returns
511 cpp_errors (pfile). */
512 extern int cpp_destroy PARAMS ((cpp_reader *));
515 extern unsigned int cpp_errors PARAMS ((cpp_reader *));
517 extern unsigned int cpp_token_len PARAMS ((const cpp_token *));
518 extern unsigned char *cpp_token_as_text PARAMS ((cpp_reader *,
520 extern unsigned char *cpp_spell_token PARAMS ((cpp_reader *, const cpp_token *,
522 extern void cpp_register_pragma PARAMS ((cpp_reader *,
523 const char *, const char *,
524 void (*) PARAMS ((cpp_reader *))));
526 extern void cpp_finish PARAMS ((cpp_reader *));
527 extern int cpp_avoid_paste PARAMS ((cpp_reader *, const cpp_token *,
529 extern const cpp_token *cpp_get_token PARAMS ((cpp_reader *));
530 extern const unsigned char *cpp_macro_definition PARAMS ((cpp_reader *,
531 const cpp_hashnode *));
532 extern void _cpp_backup_tokens PARAMS ((cpp_reader *, unsigned int));
534 /* Evaluate a CPP_CHAR or CPP_WCHAR token. */
536 cpp_interpret_charconst PARAMS ((cpp_reader *, const cpp_token *,
537 int, unsigned int *));
539 extern void cpp_define PARAMS ((cpp_reader *, const char *));
540 extern void cpp_assert PARAMS ((cpp_reader *, const char *));
541 extern void cpp_undef PARAMS ((cpp_reader *, const char *));
542 extern void cpp_unassert PARAMS ((cpp_reader *, const char *));
544 extern cpp_buffer *cpp_push_buffer PARAMS ((cpp_reader *,
545 const unsigned char *, size_t,
547 extern int cpp_defined PARAMS ((cpp_reader *, const unsigned char *, int));
549 /* Diagnostic levels. To get a dianostic without associating a
550 position in the translation unit with it, use cpp_error_with_line
551 with a line number of zero. */
553 /* Warning, an error with -Werror. */
554 #define DL_WARNING 0x00
555 /* Same as DL_WARNING, except it is not suppressed in system headers. */
556 #define DL_WARNING_SYSHDR 0x01
557 /* Warning, an error with -pedantic-errors or -Werror. */
558 #define DL_PEDWARN 0x02
560 #define DL_ERROR 0x03
561 /* A fatal error. We do not exit, to support use of cpplib as a
562 library, but may only return CPP_EOF tokens thereon. It is the
563 caller's responsibility to check CPP_FATAL_ERRORS. */
564 #define DL_FATAL 0x04
565 /* An internal consistency check failed. Prints "internal error: ",
566 otherwise the same as DL_FATAL. */
568 /* Extracts a diagnostic level from an int. */
569 #define DL_EXTRACT(l) (l & 0xf)
570 /* Non-zero if a diagnostic level is one of the warnings. */
571 #define DL_WARNING_P(l) (DL_EXTRACT (l) >= DL_WARNING \
572 && DL_EXTRACT (l) <= DL_PEDWARN)
574 /* N.B. The error-message-printer prototypes have not been nicely
575 formatted because exgettext needs to see 'msgid' on the same line
576 as the name of the function in order to work properly. Only the
577 string argument gets a name in an effort to keep the lines from
578 getting ridiculously oversized. */
580 /* Output a diagnostic of some kind. */
581 extern void cpp_error PARAMS ((cpp_reader *, int, const char *msgid, ...))
584 /* Output a diagnostic of severity LEVEL, with "MSG: " preceding the
585 error string of errno. No location is printed. */
586 extern void cpp_errno PARAMS ((cpp_reader *, int level, const char *msg));
588 /* Same as cpp_error, except additionally specifies a position as a
589 (translation unit) physical line and physical column. If the line is
590 zero, then no location is printed. */
591 extern void cpp_error_with_line PARAMS ((cpp_reader *, int, unsigned, unsigned, const char *msgid, ...))
595 extern int cpp_ideq PARAMS ((const cpp_token *,
597 extern void cpp_output_line PARAMS ((cpp_reader *, FILE *));
598 extern void cpp_output_token PARAMS ((const cpp_token *, FILE *));
599 extern const char *cpp_type2name PARAMS ((enum cpp_ttype));
600 extern unsigned int cpp_parse_escape PARAMS ((cpp_reader *,
601 const unsigned char **,
602 const unsigned char *,
603 unsigned HOST_WIDE_INT));
607 /* Lookup an identifier in the hashtable. Puts the identifier in the
608 table if it is not already there. */
609 extern cpp_hashnode *cpp_lookup PARAMS ((cpp_reader *,
610 const unsigned char *,
613 typedef int (*cpp_cb) PARAMS ((cpp_reader *, cpp_hashnode *, void *));
614 extern void cpp_forall_identifiers PARAMS ((cpp_reader *,
618 extern void cpp_scan_nooutput PARAMS ((cpp_reader *));
619 extern int cpp_sys_macro_p PARAMS ((cpp_reader *));
620 extern unsigned char *cpp_quote_string PARAMS ((unsigned char *,
621 const unsigned char *,
625 extern int cpp_included PARAMS ((cpp_reader *, const char *));
626 extern void cpp_make_system_header PARAMS ((cpp_reader *, int, int));
629 extern void cpp_preprocess_file PARAMS ((cpp_reader *));
635 #endif /* ! GCC_CPPLIB_H */