1 /* Function declarations for libiberty.
3 Copyright (C) 1997-2019 Free Software Foundation, Inc.
5 Note - certain prototypes declared in this header file are for
6 functions whoes implementation copyright does not belong to the
7 FSF. Those prototypes are present in this file for reference
8 purposes only and their presence in this file should not construed
9 as an indication of ownership by the FSF of the implementation of
10 those functions in any way or form whatsoever.
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2, or (at your option)
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 51 Franklin Street - Fifth Floor,
25 Boston, MA 02110-1301, USA.
27 Written by Cygnus Support, 1994.
29 The libiberty library provides a number of functions which are
30 missing on some operating systems. We do not declare those here,
31 to avoid conflicts with the system header files on operating
32 systems that do support those functions. In this file we only
33 declare those functions which are specific to libiberty. */
44 /* Get a definition for size_t. */
46 /* Get a definition for va_list. */
51 /* If the OS supports it, ensure that the supplied stream is setup to
52 avoid any multi-threaded locking. Otherwise leave the FILE pointer
53 unchanged. If the stream is NULL do nothing. */
55 extern void unlock_stream (FILE *);
57 /* If the OS supports it, ensure that the standard I/O streams, stdin,
58 stdout and stderr are setup to avoid any multi-threaded locking.
59 Otherwise do nothing. */
61 extern void unlock_std_streams (void);
63 /* Open and return a FILE pointer. If the OS supports it, ensure that
64 the stream is setup to avoid any multi-threaded locking. Otherwise
65 return the FILE pointer unchanged. */
67 extern FILE *fopen_unlocked (const char *, const char *);
68 extern FILE *fdopen_unlocked (int, const char *);
69 extern FILE *freopen_unlocked (const char *, const char *, FILE *);
71 /* Build an argument vector from a string. Allocates memory using
72 malloc. Use freeargv to free the vector. */
74 extern char **buildargv (const char *) ATTRIBUTE_MALLOC;
76 /* Free a vector returned by buildargv. */
78 extern void freeargv (char **);
80 /* Duplicate an argument vector. Allocates memory using malloc. Use
81 freeargv to free the vector. */
83 extern char **dupargv (char * const *) ATTRIBUTE_MALLOC;
85 /* Expand "@file" arguments in argv. */
87 extern void expandargv (int *, char ***);
89 /* Write argv to an @-file, inserting necessary quoting. */
91 extern int writeargv (char * const *, FILE *);
93 /* Return the number of elements in argv. */
95 extern int countargv (char * const *);
97 /* Return the last component of a path name. Note that we can't use a
98 prototype here because the parameter is declared inconsistently
99 across different systems, sometimes as "char *" and sometimes as
102 /* HAVE_DECL_* is a three-state macro: undefined, 0 or 1. If it is
103 undefined, we haven't run the autoconf check so provide the
104 declaration without arguments. If it is 0, we checked and failed
105 to find the declaration so provide a fully prototyped one. If it
106 is 1, we found it so don't provide any declaration at all. */
107 #if !HAVE_DECL_BASENAME
108 #if defined (__GNU_LIBRARY__ ) || defined (__linux__) \
109 || defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__NetBSD__) \
110 || defined (__CYGWIN__) || defined (__CYGWIN32__) || defined (__MINGW32__) \
111 || defined (__DragonFly__) || defined (HAVE_DECL_BASENAME)
112 extern char *basename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1);
114 /* Do not allow basename to be used if there is no prototype seen. We
115 either need to use the above prototype or have one from
116 autoconf which would result in HAVE_DECL_BASENAME being set. */
117 #define basename basename_cannot_be_used_without_a_prototype
121 /* A well-defined basename () that is always compiled in. */
123 extern const char *lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1);
125 /* Same, but assumes DOS semantics (drive name, backslash is also a
126 dir separator) regardless of host. */
128 extern const char *dos_lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1);
130 /* Same, but assumes Unix semantics (absolute paths always start with
131 a slash, only forward slash is accepted as dir separator)
132 regardless of host. */
134 extern const char *unix_lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1);
136 /* A well-defined realpath () that is always compiled in. */
138 extern char *lrealpath (const char *);
140 /* Concatenate an arbitrary number of strings. You must pass NULL as
141 the last argument of this function, to terminate the list of
142 strings. Allocates memory using xmalloc. */
144 extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL;
146 /* Concatenate an arbitrary number of strings. You must pass NULL as
147 the last argument of this function, to terminate the list of
148 strings. Allocates memory using xmalloc. The first argument is
149 not one of the strings to be concatenated, but if not NULL is a
150 pointer to be freed after the new string is created, similar to the
151 way xrealloc works. */
153 extern char *reconcat (char *, const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL;
155 /* Determine the length of concatenating an arbitrary number of
156 strings. You must pass NULL as the last argument of this function,
157 to terminate the list of strings. */
159 extern unsigned long concat_length (const char *, ...) ATTRIBUTE_SENTINEL;
161 /* Concatenate an arbitrary number of strings into a SUPPLIED area of
162 memory. You must pass NULL as the last argument of this function,
163 to terminate the list of strings. The supplied memory is assumed
164 to be large enough. */
166 extern char *concat_copy (char *, const char *, ...) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1) ATTRIBUTE_SENTINEL;
168 /* Concatenate an arbitrary number of strings into a GLOBAL area of
169 memory. You must pass NULL as the last argument of this function,
170 to terminate the list of strings. The supplied memory is assumed
171 to be large enough. */
173 extern char *concat_copy2 (const char *, ...) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL;
175 /* This is the global area used by concat_copy2. */
177 extern char *libiberty_concat_ptr;
179 /* Concatenate an arbitrary number of strings. You must pass NULL as
180 the last argument of this function, to terminate the list of
181 strings. Allocates memory using alloca. The arguments are
183 #define ACONCAT(ACONCAT_PARAMS) \
184 (libiberty_concat_ptr = (char *) alloca (concat_length ACONCAT_PARAMS + 1), \
185 concat_copy2 ACONCAT_PARAMS)
187 /* Check whether two file descriptors refer to the same file. */
189 extern int fdmatch (int fd1, int fd2);
191 /* Return the position of the first bit set in the argument. */
192 /* Prototypes vary from system to system, so we only provide a
193 prototype on systems where we know that we need it. */
194 #if defined (HAVE_DECL_FFS) && !HAVE_DECL_FFS
198 /* Get the working directory. The result is cached, so don't call
199 chdir() between calls to getpwd(). */
201 extern char * getpwd (void);
203 /* Get the current time. */
204 /* Prototypes vary from system to system, so we only provide a
205 prototype on systems where we know that we need it. */
207 /* Forward declaration to avoid #include <sys/time.h>. */
209 extern int gettimeofday (struct timeval *, void *);
212 /* Get the amount of time the process has run, in microseconds. */
214 extern long get_run_time (void);
216 /* Generate a relocated path to some installation directory. Allocates
217 return value using malloc. */
219 extern char *make_relative_prefix (const char *, const char *,
220 const char *) ATTRIBUTE_MALLOC;
222 /* Generate a relocated path to some installation directory without
223 attempting to follow any soft links. Allocates
224 return value using malloc. */
226 extern char *make_relative_prefix_ignore_links (const char *, const char *,
227 const char *) ATTRIBUTE_MALLOC;
229 /* Returns a pointer to a directory path suitable for creating temporary
232 extern const char *choose_tmpdir (void) ATTRIBUTE_RETURNS_NONNULL;
234 /* Choose a temporary directory to use for scratch files. */
236 extern char *choose_temp_base (void) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
238 /* Return a temporary file name or NULL if unable to create one. */
240 extern char *make_temp_file (const char *) ATTRIBUTE_MALLOC;
242 /* Return a temporary file name with given PREFIX and SUFFIX
243 or NULL if unable to create one. */
245 extern char *make_temp_file_with_prefix (const char *, const char *) ATTRIBUTE_MALLOC;
247 /* Remove a link to a file unless it is special. */
249 extern int unlink_if_ordinary (const char *);
251 /* Allocate memory filled with spaces. Allocates using malloc. */
253 extern const char *spaces (int count);
255 /* Return the maximum error number for which strerror will return a
258 extern int errno_max (void);
260 /* Return the name of an errno value (e.g., strerrno (EINVAL) returns
263 extern const char *strerrno (int);
265 /* Given the name of an errno value, return the value. */
267 extern int strtoerrno (const char *);
269 /* ANSI's strerror(), but more robust. */
271 extern char *xstrerror (int) ATTRIBUTE_RETURNS_NONNULL;
273 /* Return the maximum signal number for which strsignal will return a
276 extern int signo_max (void);
278 /* Return a signal message string for a signal number
279 (e.g., strsignal (SIGHUP) returns something like "Hangup"). */
280 /* This is commented out as it can conflict with one in system headers.
281 We still document its existence though. */
283 /*extern const char *strsignal (int);*/
285 /* Return the name of a signal number (e.g., strsigno (SIGHUP) returns
288 extern const char *strsigno (int);
290 /* Given the name of a signal, return its number. */
292 extern int strtosigno (const char *);
294 /* Register a function to be run by xexit. Returns 0 on success. */
296 extern int xatexit (void (*fn) (void));
298 /* Exit, calling all the functions registered with xatexit. */
300 extern void xexit (int status) ATTRIBUTE_NORETURN;
302 /* Set the program name used by xmalloc. */
304 extern void xmalloc_set_program_name (const char *);
306 /* Report an allocation failure. */
307 extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN;
309 /* Allocate memory without fail. If malloc fails, this will print a
310 message to stderr (using the name set by xmalloc_set_program_name,
311 if any) and then call xexit. */
313 extern void *xmalloc (size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
315 /* Reallocate memory without fail. This works like xmalloc. Note,
316 realloc type functions are not suitable for attribute malloc since
317 they may return the same address across multiple calls. */
319 extern void *xrealloc (void *, size_t) ATTRIBUTE_RETURNS_NONNULL;
321 /* Allocate memory without fail and set it to zero. This works like
324 extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
326 /* Copy a string into a memory buffer without fail. */
328 extern char *xstrdup (const char *) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
330 /* Copy at most N characters from string into a buffer without fail. */
332 extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
334 /* Copy an existing memory buffer to a new memory buffer without fail. */
336 extern void *xmemdup (const void *, size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
338 /* Physical memory routines. Return values are in BYTES. */
339 extern double physmem_total (void);
340 extern double physmem_available (void);
342 /* Compute the 32-bit CRC of a block of memory. */
343 extern unsigned int xcrc32 (const unsigned char *, int, unsigned int);
345 /* These macros provide a K&R/C89/C++-friendly way of allocating structures
346 with nice encapsulation. The XDELETE*() macros are technically
347 superfluous, but provided here for symmetry. Using them consistently
348 makes it easier to update client code to use different allocators such
349 as new/delete and new[]/delete[]. */
351 /* Scalar allocators. */
353 #define XALLOCA(T) ((T *) alloca (sizeof (T)))
354 #define XNEW(T) ((T *) xmalloc (sizeof (T)))
355 #define XCNEW(T) ((T *) xcalloc (1, sizeof (T)))
356 #define XDUP(T, P) ((T *) xmemdup ((P), sizeof (T), sizeof (T)))
357 #define XDELETE(P) free ((void*) (P))
359 /* Array allocators. */
361 #define XALLOCAVEC(T, N) ((T *) alloca (sizeof (T) * (N)))
362 #define XNEWVEC(T, N) ((T *) xmalloc (sizeof (T) * (N)))
363 #define XCNEWVEC(T, N) ((T *) xcalloc ((N), sizeof (T)))
364 #define XDUPVEC(T, P, N) ((T *) xmemdup ((P), sizeof (T) * (N), sizeof (T) * (N)))
365 #define XRESIZEVEC(T, P, N) ((T *) xrealloc ((void *) (P), sizeof (T) * (N)))
366 #define XDELETEVEC(P) free ((void*) (P))
368 /* Allocators for variable-sized structures and raw buffers. */
370 #define XALLOCAVAR(T, S) ((T *) alloca ((S)))
371 #define XNEWVAR(T, S) ((T *) xmalloc ((S)))
372 #define XCNEWVAR(T, S) ((T *) xcalloc (1, (S)))
373 #define XDUPVAR(T, P, S1, S2) ((T *) xmemdup ((P), (S1), (S2)))
374 #define XRESIZEVAR(T, P, S) ((T *) xrealloc ((P), (S)))
376 /* Type-safe obstack allocator. */
378 #define XOBNEW(O, T) ((T *) obstack_alloc ((O), sizeof (T)))
379 #define XOBNEWVEC(O, T, N) ((T *) obstack_alloc ((O), sizeof (T) * (N)))
380 #define XOBNEWVAR(O, T, S) ((T *) obstack_alloc ((O), (S)))
381 #define XOBFINISH(O, T) ((T) obstack_finish ((O)))
383 /* hex character manipulation routines */
385 #define _hex_array_size 256
387 extern const unsigned char _hex_value[_hex_array_size];
388 extern void hex_init (void);
389 #define hex_p(c) (hex_value (c) != _hex_bad)
390 /* If you change this, note well: Some code relies on side effects in
391 the argument being performed exactly once. */
392 #define hex_value(c) ((unsigned int) _hex_value[(unsigned char) (c)])
394 /* Flags for pex_init. These are bits to be or'ed together. */
396 /* Record subprocess times, if possible. */
397 #define PEX_RECORD_TIMES 0x1
399 /* Use pipes for communication between processes, if possible. */
400 #define PEX_USE_PIPES 0x2
402 /* Save files used for communication between processes. */
403 #define PEX_SAVE_TEMPS 0x4
405 /* Max number of alloca bytes per call before we must switch to malloc.
407 ?? Swiped from gnulib's regex_internal.h header. Is this actually
408 the case? This number seems arbitrary, though sane.
410 The OS usually guarantees only one guard page at the bottom of the stack,
411 and a page size can be as small as 4096 bytes. So we cannot safely
412 allocate anything larger than 4096 bytes. Also care for the possibility
413 of a few compiler-allocated temporary stack slots. */
414 #define MAX_ALLOCA_SIZE 4032
416 /* Prepare to execute one or more programs, with standard output of
417 each program fed to standard input of the next.
419 PNAME The name of the program to report in error messages.
420 TEMPBASE A base name to use for temporary files; may be NULL to
422 Returns NULL on error. */
424 extern struct pex_obj *pex_init (int flags, const char *pname,
425 const char *tempbase) ATTRIBUTE_RETURNS_NONNULL;
427 /* Flags for pex_run. These are bits to be or'ed together. */
429 /* Last program in pipeline. Standard output of program goes to
430 OUTNAME, or, if OUTNAME is NULL, to standard output of caller. Do
431 not set this if you want to call pex_read_output. After this is
432 set, pex_run may no longer be called with the same struct
436 /* Search for program in executable search path. */
437 #define PEX_SEARCH 0x2
439 /* OUTNAME is a suffix. */
440 #define PEX_SUFFIX 0x4
442 /* Send program's standard error to standard output. */
443 #define PEX_STDERR_TO_STDOUT 0x8
445 /* Input file should be opened in binary mode. This flag is ignored
447 #define PEX_BINARY_INPUT 0x10
449 /* Output file should be opened in binary mode. This flag is ignored
450 on Unix. For proper behaviour PEX_BINARY_INPUT and
451 PEX_BINARY_OUTPUT have to match appropriately--i.e., a call using
452 PEX_BINARY_OUTPUT should be followed by a call using
454 #define PEX_BINARY_OUTPUT 0x20
456 /* Capture stderr to a pipe. The output can be read by
457 calling pex_read_err and reading from the returned
458 FILE object. This flag may be specified only for
459 the last program in a pipeline.
461 This flag is supported only on Unix and Windows. */
462 #define PEX_STDERR_TO_PIPE 0x40
464 /* Capture stderr in binary mode. This flag is ignored
466 #define PEX_BINARY_ERROR 0x80
468 /* Append stdout to existing file instead of truncating it. */
469 #define PEX_STDOUT_APPEND 0x100
471 /* Thes same as PEX_STDOUT_APPEND, but for STDERR. */
472 #define PEX_STDERR_APPEND 0x200
474 /* Execute one program. Returns NULL on success. On error returns an
475 error string (typically just the name of a system call); the error
476 string is statically allocated.
478 OBJ Returned by pex_init.
482 EXECUTABLE The program to execute.
484 ARGV NULL terminated array of arguments to pass to the program.
486 OUTNAME Sets the output file name as follows:
488 PEX_SUFFIX set (OUTNAME may not be NULL):
489 TEMPBASE parameter to pex_init not NULL:
490 Output file name is the concatenation of TEMPBASE
493 Output file name is a random file name ending in
497 Output file name is OUTNAME.
498 OUTNAME NULL, TEMPBASE not NULL:
499 Output file name is randomly chosen using
501 OUTNAME NULL, TEMPBASE NULL:
502 Output file name is randomly chosen.
504 If PEX_LAST is not set, the output file name is the
505 name to use for a temporary file holding stdout, if
506 any (there will not be a file if PEX_USE_PIPES is set
507 and the system supports pipes). If a file is used, it
508 will be removed when no longer needed unless
509 PEX_SAVE_TEMPS is set.
511 If PEX_LAST is set, and OUTNAME is not NULL, standard
512 output is written to the output file name. The file
513 will not be removed. If PEX_LAST and PEX_SUFFIX are
514 both set, TEMPBASE may not be NULL.
516 ERRNAME If not NULL, this is the name of a file to which
517 standard error is written. If NULL, standard error of
518 the program is standard error of the caller.
520 ERR On an error return, *ERR is set to an errno value, or
521 to 0 if there is no relevant errno.
524 extern const char *pex_run (struct pex_obj *obj, int flags,
525 const char *executable, char * const *argv,
526 const char *outname, const char *errname,
529 /* As for pex_run (), but takes an extra parameter to enable the
530 environment for the child process to be specified.
532 ENV The environment for the child process, specified as
533 an array of character pointers. Each element of the
534 array should point to a string of the form VAR=VALUE,
535 with the exception of the last element which must be
539 extern const char *pex_run_in_environment (struct pex_obj *obj, int flags,
540 const char *executable,
544 const char *errname, int *err);
546 /* Return a stream for a temporary file to pass to the first program
547 in the pipeline as input. The file name is chosen as for pex_run.
548 pex_run closes the file automatically; don't close it yourself. */
550 extern FILE *pex_input_file (struct pex_obj *obj, int flags,
551 const char *in_name);
553 /* Return a stream for a pipe connected to the standard input of the
554 first program in the pipeline. You must have passed
555 `PEX_USE_PIPES' to `pex_init'. Close the returned stream
558 extern FILE *pex_input_pipe (struct pex_obj *obj, int binary);
560 /* Read the standard output of the last program to be executed.
561 pex_run cannot be called after this. BINARY should be non-zero if
562 the file should be opened in binary mode; this is ignored on Unix.
563 Returns NULL on error. Don't call fclose on the returned FILE; it
564 will be closed by pex_free. */
566 extern FILE *pex_read_output (struct pex_obj *, int binary);
568 /* Read the standard error of the last program to be executed.
569 pex_run cannot be called after this. BINARY should be non-zero if
570 the file should be opened in binary mode; this is ignored on Unix.
571 Returns NULL on error. Don't call fclose on the returned FILE; it
572 will be closed by pex_free. */
574 extern FILE *pex_read_err (struct pex_obj *, int binary);
576 /* Return exit status of all programs in VECTOR. COUNT indicates the
577 size of VECTOR. The status codes in the vector are in the order of
578 the calls to pex_run. Returns 0 on error, 1 on success. */
580 extern int pex_get_status (struct pex_obj *, int count, int *vector);
582 /* Return times of all programs in VECTOR. COUNT indicates the size
583 of VECTOR. struct pex_time is really just struct timeval, but that
584 is not portable to all systems. Returns 0 on error, 1 on
589 unsigned long user_seconds;
590 unsigned long user_microseconds;
591 unsigned long system_seconds;
592 unsigned long system_microseconds;
595 extern int pex_get_times (struct pex_obj *, int count,
596 struct pex_time *vector);
598 /* Clean up a pex_obj. If you have not called pex_get_times or
599 pex_get_status, this will try to kill the subprocesses. */
601 extern void pex_free (struct pex_obj *);
603 /* Just execute one program. Return value is as for pex_run.
604 FLAGS Combination of PEX_SEARCH and PEX_STDERR_TO_STDOUT.
605 EXECUTABLE As for pex_run.
607 PNAME As for pex_init.
608 OUTNAME As for pex_run when PEX_LAST is set.
609 ERRNAME As for pex_run.
610 STATUS Set to exit status on success.
614 extern const char *pex_one (int flags, const char *executable,
615 char * const *argv, const char *pname,
616 const char *outname, const char *errname,
617 int *status, int *err);
619 /* pexecute and pwait are the old pexecute interface, still here for
620 backward compatibility. Don't use these for new code. Instead,
621 use pex_init/pex_run/pex_get_status/pex_free, or pex_one. */
623 /* Definitions used by the pexecute routine. */
625 #define PEXECUTE_FIRST 1
626 #define PEXECUTE_LAST 2
627 #define PEXECUTE_ONE (PEXECUTE_FIRST + PEXECUTE_LAST)
628 #define PEXECUTE_SEARCH 4
629 #define PEXECUTE_VERBOSE 8
631 /* Execute a program. */
633 extern int pexecute (const char *, char * const *, const char *,
634 const char *, char **, char **, int);
636 /* Wait for pexecute to finish. */
638 extern int pwait (int, int *, int);
640 #if defined(HAVE_DECL_ASPRINTF) && !HAVE_DECL_ASPRINTF
641 /* Like sprintf but provides a pointer to malloc'd storage, which must
642 be freed by the caller. */
644 extern int asprintf (char **, const char *, ...) ATTRIBUTE_PRINTF_2;
647 /* Like asprintf but allocates memory without fail. This works like
650 extern char *xasprintf (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_PRINTF_1;
652 #if !HAVE_DECL_VASPRINTF
653 /* Like vsprintf but provides a pointer to malloc'd storage, which
654 must be freed by the caller. */
656 extern int vasprintf (char **, const char *, va_list) ATTRIBUTE_PRINTF(2,0);
659 /* Like vasprintf but allocates memory without fail. This works like
662 extern char *xvasprintf (const char *, va_list) ATTRIBUTE_MALLOC ATTRIBUTE_PRINTF(1,0);
664 #if defined(HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
665 /* Like sprintf but prints at most N characters. */
666 extern int snprintf (char *, size_t, const char *, ...) ATTRIBUTE_PRINTF_3;
669 #if defined(HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF
670 /* Like vsprintf but prints at most N characters. */
671 extern int vsnprintf (char *, size_t, const char *, va_list) ATTRIBUTE_PRINTF(3,0);
674 #if defined (HAVE_DECL_STRNLEN) && !HAVE_DECL_STRNLEN
675 extern size_t strnlen (const char *, size_t);
678 #if defined(HAVE_DECL_STRVERSCMP) && !HAVE_DECL_STRVERSCMP
679 /* Compare version strings. */
680 extern int strverscmp (const char *, const char *);
683 #if defined(HAVE_DECL_STRTOL) && !HAVE_DECL_STRTOL
684 extern long int strtol (const char *nptr,
685 char **endptr, int base);
688 #if defined(HAVE_DECL_STRTOUL) && !HAVE_DECL_STRTOUL
689 extern unsigned long int strtoul (const char *nptr,
690 char **endptr, int base);
693 #if defined(HAVE_LONG_LONG) && defined(HAVE_DECL_STRTOLL) && !HAVE_DECL_STRTOLL
695 extern long long int strtoll (const char *nptr,
696 char **endptr, int base);
699 #if defined(HAVE_LONG_LONG) && defined(HAVE_DECL_STRTOULL) && !HAVE_DECL_STRTOULL
701 extern unsigned long long int strtoull (const char *nptr,
702 char **endptr, int base);
705 #if defined(HAVE_DECL_STRVERSCMP) && !HAVE_DECL_STRVERSCMP
706 /* Compare version strings. */
707 extern int strverscmp (const char *, const char *);
710 /* Set the title of a process */
711 extern void setproctitle (const char *name, ...);
713 /* Increase stack limit if possible. */
714 extern void stack_limit_increase (unsigned long);
716 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
718 /* Drastically simplified alloca configurator. If we're using GCC,
719 we use __builtin_alloca; otherwise we use the C alloca. The C
720 alloca is always available. You can override GCC by defining
721 USE_C_ALLOCA yourself. The canonical autoconf macro C_ALLOCA is
722 also set/unset as it is often used to indicate whether code needs
723 to call alloca(0). */
724 extern void *C_alloca (size_t) ATTRIBUTE_MALLOC;
726 #if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA
727 # define alloca(x) __builtin_alloca(x)
729 # define ASTRDUP(X) \
730 (__extension__ ({ const char *const libiberty_optr = (X); \
731 const unsigned long libiberty_len = strlen (libiberty_optr) + 1; \
732 char *const libiberty_nptr = (char *) alloca (libiberty_len); \
733 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len); }))
735 # define alloca(x) C_alloca(x)
737 # define USE_C_ALLOCA 1
740 extern const char *libiberty_optr;
741 extern char *libiberty_nptr;
742 extern unsigned long libiberty_len;
743 # define ASTRDUP(X) \
744 (libiberty_optr = (X), \
745 libiberty_len = strlen (libiberty_optr) + 1, \
746 libiberty_nptr = (char *) alloca (libiberty_len), \
747 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len))
755 #endif /* ! defined (LIBIBERTY_H) */