1 /* Function declarations for libiberty.
3 Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
4 2006, 2007, 2008, 2009, 2010, 2011, 2013 Free Software Foundation, Inc.
6 Note - certain prototypes declared in this header file are for
7 functions whoes implementation copyright does not belong to the
8 FSF. Those prototypes are present in this file for reference
9 purposes only and their presence in this file should not construed
10 as an indication of ownership by the FSF of the implementation of
11 those functions in any way or form whatsoever.
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2, or (at your option)
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 51 Franklin Street - Fifth Floor,
26 Boston, MA 02110-1301, USA.
28 Written by Cygnus Support, 1994.
30 The libiberty library provides a number of functions which are
31 missing on some operating systems. We do not declare those here,
32 to avoid conflicts with the system header files on operating
33 systems that do support those functions. In this file we only
34 declare those functions which are specific to libiberty. */
45 /* Get a definition for size_t. */
47 /* Get a definition for va_list. */
52 /* If the OS supports it, ensure that the supplied stream is setup to
53 avoid any multi-threaded locking. Otherwise leave the FILE pointer
54 unchanged. If the stream is NULL do nothing. */
56 extern void unlock_stream (FILE *);
58 /* If the OS supports it, ensure that the standard I/O streams, stdin,
59 stdout and stderr are setup to avoid any multi-threaded locking.
60 Otherwise do nothing. */
62 extern void unlock_std_streams (void);
64 /* Open and return a FILE pointer. If the OS supports it, ensure that
65 the stream is setup to avoid any multi-threaded locking. Otherwise
66 return the FILE pointer unchanged. */
68 extern FILE *fopen_unlocked (const char *, const char *);
69 extern FILE *fdopen_unlocked (int, const char *);
70 extern FILE *freopen_unlocked (const char *, const char *, FILE *);
72 /* Build an argument vector from a string. Allocates memory using
73 malloc. Use freeargv to free the vector. */
75 extern char **buildargv (const char *) ATTRIBUTE_MALLOC;
77 /* Free a vector returned by buildargv. */
79 extern void freeargv (char **);
81 /* Duplicate an argument vector. Allocates memory using malloc. Use
82 freeargv to free the vector. */
84 extern char **dupargv (char **) ATTRIBUTE_MALLOC;
86 /* Expand "@file" arguments in argv. */
88 extern void expandargv (int *, char ***);
90 /* Write argv to an @-file, inserting necessary quoting. */
92 extern int writeargv (char **, FILE *);
94 /* Return the number of elements in argv. */
96 extern int countargv (char**);
98 /* Return the last component of a path name. Note that we can't use a
99 prototype here because the parameter is declared inconsistently
100 across different systems, sometimes as "char *" and sometimes as
103 /* HAVE_DECL_* is a three-state macro: undefined, 0 or 1. If it is
104 undefined, we haven't run the autoconf check so provide the
105 declaration without arguments. If it is 0, we checked and failed
106 to find the declaration so provide a fully prototyped one. If it
107 is 1, we found it so don't provide any declaration at all. */
108 #if !HAVE_DECL_BASENAME
109 #if defined (__GNU_LIBRARY__ ) || defined (__linux__) \
110 || defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__NetBSD__) \
111 || defined (__CYGWIN__) || defined (__CYGWIN32__) || defined (__MINGW32__) \
112 || defined (__DragonFly__) || defined (HAVE_DECL_BASENAME)
113 extern char *basename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1);
115 /* Do not allow basename to be used if there is no prototype seen. We
116 either need to use the above prototype or have one from
117 autoconf which would result in HAVE_DECL_BASENAME being set. */
118 #define basename basename_cannot_be_used_without_a_prototype
122 /* A well-defined basename () that is always compiled in. */
124 extern const char *lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1);
126 /* Same, but assumes DOS semantics (drive name, backslash is also a
127 dir separator) regardless of host. */
129 extern const char *dos_lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1);
131 /* Same, but assumes Unix semantics (absolute paths always start with
132 a slash, only forward slash is accepted as dir separator)
133 regardless of host. */
135 extern const char *unix_lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1);
137 /* A well-defined realpath () that is always compiled in. */
139 extern char *lrealpath (const char *);
141 /* Concatenate an arbitrary number of strings. You must pass NULL as
142 the last argument of this function, to terminate the list of
143 strings. Allocates memory using xmalloc. */
145 extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL;
147 /* Concatenate an arbitrary number of strings. You must pass NULL as
148 the last argument of this function, to terminate the list of
149 strings. Allocates memory using xmalloc. The first argument is
150 not one of the strings to be concatenated, but if not NULL is a
151 pointer to be freed after the new string is created, similar to the
152 way xrealloc works. */
154 extern char *reconcat (char *, const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL;
156 /* Determine the length of concatenating an arbitrary number of
157 strings. You must pass NULL as the last argument of this function,
158 to terminate the list of strings. */
160 extern unsigned long concat_length (const char *, ...) ATTRIBUTE_SENTINEL;
162 /* Concatenate an arbitrary number of strings into a SUPPLIED area of
163 memory. You must pass NULL as the last argument of this function,
164 to terminate the list of strings. The supplied memory is assumed
165 to be large enough. */
167 extern char *concat_copy (char *, const char *, ...) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1) ATTRIBUTE_SENTINEL;
169 /* Concatenate an arbitrary number of strings into a GLOBAL area of
170 memory. You must pass NULL as the last argument of this function,
171 to terminate the list of strings. The supplied memory is assumed
172 to be large enough. */
174 extern char *concat_copy2 (const char *, ...) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL;
176 /* This is the global area used by concat_copy2. */
178 extern char *libiberty_concat_ptr;
180 /* Concatenate an arbitrary number of strings. You must pass NULL as
181 the last argument of this function, to terminate the list of
182 strings. Allocates memory using alloca. The arguments are
184 #define ACONCAT(ACONCAT_PARAMS) \
185 (libiberty_concat_ptr = (char *) alloca (concat_length ACONCAT_PARAMS + 1), \
186 concat_copy2 ACONCAT_PARAMS)
188 /* Check whether two file descriptors refer to the same file. */
190 extern int fdmatch (int fd1, int fd2);
192 /* Return the position of the first bit set in the argument. */
193 /* Prototypes vary from system to system, so we only provide a
194 prototype on systems where we know that we need it. */
195 #if defined (HAVE_DECL_FFS) && !HAVE_DECL_FFS
199 /* Get the working directory. The result is cached, so don't call
200 chdir() between calls to getpwd(). */
202 extern char * getpwd (void);
204 /* Get the current time. */
205 /* Prototypes vary from system to system, so we only provide a
206 prototype on systems where we know that we need it. */
208 /* Forward declaration to avoid #include <sys/time.h>. */
210 extern int gettimeofday (struct timeval *, void *);
213 /* Get the amount of time the process has run, in microseconds. */
215 extern long get_run_time (void);
217 /* Generate a relocated path to some installation directory. Allocates
218 return value using malloc. */
220 extern char *make_relative_prefix (const char *, const char *,
221 const char *) ATTRIBUTE_MALLOC;
223 /* Generate a relocated path to some installation directory without
224 attempting to follow any soft links. Allocates
225 return value using malloc. */
227 extern char *make_relative_prefix_ignore_links (const char *, const char *,
228 const char *) ATTRIBUTE_MALLOC;
230 /* Choose a temporary directory to use for scratch files. */
232 extern char *choose_temp_base (void) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
234 /* Return a temporary file name or NULL if unable to create one. */
236 extern char *make_temp_file (const char *) ATTRIBUTE_MALLOC;
238 /* Remove a link to a file unless it is special. */
240 extern int unlink_if_ordinary (const char *);
242 /* Allocate memory filled with spaces. Allocates using malloc. */
244 extern const char *spaces (int count);
246 /* Return the maximum error number for which strerror will return a
249 extern int errno_max (void);
251 /* Return the name of an errno value (e.g., strerrno (EINVAL) returns
254 extern const char *strerrno (int);
256 /* Given the name of an errno value, return the value. */
258 extern int strtoerrno (const char *);
260 /* ANSI's strerror(), but more robust. */
262 extern char *xstrerror (int) ATTRIBUTE_RETURNS_NONNULL;
264 /* Return the maximum signal number for which strsignal will return a
267 extern int signo_max (void);
269 /* Return a signal message string for a signal number
270 (e.g., strsignal (SIGHUP) returns something like "Hangup"). */
271 /* This is commented out as it can conflict with one in system headers.
272 We still document its existence though. */
274 /*extern const char *strsignal (int);*/
276 /* Return the name of a signal number (e.g., strsigno (SIGHUP) returns
279 extern const char *strsigno (int);
281 /* Given the name of a signal, return its number. */
283 extern int strtosigno (const char *);
285 /* Register a function to be run by xexit. Returns 0 on success. */
287 extern int xatexit (void (*fn) (void));
289 /* Exit, calling all the functions registered with xatexit. */
291 extern void xexit (int status) ATTRIBUTE_NORETURN;
293 /* Set the program name used by xmalloc. */
295 extern void xmalloc_set_program_name (const char *);
297 /* Report an allocation failure. */
298 extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN;
300 /* Allocate memory without fail. If malloc fails, this will print a
301 message to stderr (using the name set by xmalloc_set_program_name,
302 if any) and then call xexit. */
304 extern void *xmalloc (size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
306 /* Reallocate memory without fail. This works like xmalloc. Note,
307 realloc type functions are not suitable for attribute malloc since
308 they may return the same address across multiple calls. */
310 extern void *xrealloc (void *, size_t) ATTRIBUTE_RETURNS_NONNULL;
312 /* Allocate memory without fail and set it to zero. This works like
315 extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
317 /* Copy a string into a memory buffer without fail. */
319 extern char *xstrdup (const char *) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
321 /* Copy at most N characters from string into a buffer without fail. */
323 extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
325 /* Copy an existing memory buffer to a new memory buffer without fail. */
327 extern void *xmemdup (const void *, size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL;
329 /* Physical memory routines. Return values are in BYTES. */
330 extern double physmem_total (void);
331 extern double physmem_available (void);
333 /* Compute the 32-bit CRC of a block of memory. */
334 extern unsigned int xcrc32 (const unsigned char *, int, unsigned int);
336 /* These macros provide a K&R/C89/C++-friendly way of allocating structures
337 with nice encapsulation. The XDELETE*() macros are technically
338 superfluous, but provided here for symmetry. Using them consistently
339 makes it easier to update client code to use different allocators such
340 as new/delete and new[]/delete[]. */
342 /* Scalar allocators. */
344 #define XALLOCA(T) ((T *) alloca (sizeof (T)))
345 #define XNEW(T) ((T *) xmalloc (sizeof (T)))
346 #define XCNEW(T) ((T *) xcalloc (1, sizeof (T)))
347 #define XDUP(T, P) ((T *) xmemdup ((P), sizeof (T), sizeof (T)))
348 #define XDELETE(P) free ((void*) (P))
350 /* Array allocators. */
352 #define XALLOCAVEC(T, N) ((T *) alloca (sizeof (T) * (N)))
353 #define XNEWVEC(T, N) ((T *) xmalloc (sizeof (T) * (N)))
354 #define XCNEWVEC(T, N) ((T *) xcalloc ((N), sizeof (T)))
355 #define XDUPVEC(T, P, N) ((T *) xmemdup ((P), sizeof (T) * (N), sizeof (T) * (N)))
356 #define XRESIZEVEC(T, P, N) ((T *) xrealloc ((void *) (P), sizeof (T) * (N)))
357 #define XDELETEVEC(P) free ((void*) (P))
359 /* Allocators for variable-sized structures and raw buffers. */
361 #define XALLOCAVAR(T, S) ((T *) alloca ((S)))
362 #define XNEWVAR(T, S) ((T *) xmalloc ((S)))
363 #define XCNEWVAR(T, S) ((T *) xcalloc (1, (S)))
364 #define XDUPVAR(T, P, S1, S2) ((T *) xmemdup ((P), (S1), (S2)))
365 #define XRESIZEVAR(T, P, S) ((T *) xrealloc ((P), (S)))
367 /* Type-safe obstack allocator. */
369 #define XOBNEW(O, T) ((T *) obstack_alloc ((O), sizeof (T)))
370 #define XOBNEWVEC(O, T, N) ((T *) obstack_alloc ((O), sizeof (T) * (N)))
371 #define XOBNEWVAR(O, T, S) ((T *) obstack_alloc ((O), (S)))
372 #define XOBFINISH(O, T) ((T) obstack_finish ((O)))
374 /* hex character manipulation routines */
376 #define _hex_array_size 256
378 extern const unsigned char _hex_value[_hex_array_size];
379 extern void hex_init (void);
380 #define hex_p(c) (hex_value (c) != _hex_bad)
381 /* If you change this, note well: Some code relies on side effects in
382 the argument being performed exactly once. */
383 #define hex_value(c) ((unsigned int) _hex_value[(unsigned char) (c)])
385 /* Flags for pex_init. These are bits to be or'ed together. */
387 /* Record subprocess times, if possible. */
388 #define PEX_RECORD_TIMES 0x1
390 /* Use pipes for communication between processes, if possible. */
391 #define PEX_USE_PIPES 0x2
393 /* Save files used for communication between processes. */
394 #define PEX_SAVE_TEMPS 0x4
396 /* Prepare to execute one or more programs, with standard output of
397 each program fed to standard input of the next.
399 PNAME The name of the program to report in error messages.
400 TEMPBASE A base name to use for temporary files; may be NULL to
402 Returns NULL on error. */
404 extern struct pex_obj *pex_init (int flags, const char *pname,
405 const char *tempbase) ATTRIBUTE_RETURNS_NONNULL;
407 /* Flags for pex_run. These are bits to be or'ed together. */
409 /* Last program in pipeline. Standard output of program goes to
410 OUTNAME, or, if OUTNAME is NULL, to standard output of caller. Do
411 not set this if you want to call pex_read_output. After this is
412 set, pex_run may no longer be called with the same struct
416 /* Search for program in executable search path. */
417 #define PEX_SEARCH 0x2
419 /* OUTNAME is a suffix. */
420 #define PEX_SUFFIX 0x4
422 /* Send program's standard error to standard output. */
423 #define PEX_STDERR_TO_STDOUT 0x8
425 /* Input file should be opened in binary mode. This flag is ignored
427 #define PEX_BINARY_INPUT 0x10
429 /* Output file should be opened in binary mode. This flag is ignored
430 on Unix. For proper behaviour PEX_BINARY_INPUT and
431 PEX_BINARY_OUTPUT have to match appropriately--i.e., a call using
432 PEX_BINARY_OUTPUT should be followed by a call using
434 #define PEX_BINARY_OUTPUT 0x20
436 /* Capture stderr to a pipe. The output can be read by
437 calling pex_read_err and reading from the returned
438 FILE object. This flag may be specified only for
439 the last program in a pipeline.
441 This flag is supported only on Unix and Windows. */
442 #define PEX_STDERR_TO_PIPE 0x40
444 /* Capture stderr in binary mode. This flag is ignored
446 #define PEX_BINARY_ERROR 0x80
448 /* Append stdout to existing file instead of truncating it. */
449 #define PEX_STDOUT_APPEND 0x100
451 /* Thes same as PEX_STDOUT_APPEND, but for STDERR. */
452 #define PEX_STDERR_APPEND 0x200
454 /* Execute one program. Returns NULL on success. On error returns an
455 error string (typically just the name of a system call); the error
456 string is statically allocated.
458 OBJ Returned by pex_init.
462 EXECUTABLE The program to execute.
464 ARGV NULL terminated array of arguments to pass to the program.
466 OUTNAME Sets the output file name as follows:
468 PEX_SUFFIX set (OUTNAME may not be NULL):
469 TEMPBASE parameter to pex_init not NULL:
470 Output file name is the concatenation of TEMPBASE
473 Output file name is a random file name ending in
477 Output file name is OUTNAME.
478 OUTNAME NULL, TEMPBASE not NULL:
479 Output file name is randomly chosen using
481 OUTNAME NULL, TEMPBASE NULL:
482 Output file name is randomly chosen.
484 If PEX_LAST is not set, the output file name is the
485 name to use for a temporary file holding stdout, if
486 any (there will not be a file if PEX_USE_PIPES is set
487 and the system supports pipes). If a file is used, it
488 will be removed when no longer needed unless
489 PEX_SAVE_TEMPS is set.
491 If PEX_LAST is set, and OUTNAME is not NULL, standard
492 output is written to the output file name. The file
493 will not be removed. If PEX_LAST and PEX_SUFFIX are
494 both set, TEMPBASE may not be NULL.
496 ERRNAME If not NULL, this is the name of a file to which
497 standard error is written. If NULL, standard error of
498 the program is standard error of the caller.
500 ERR On an error return, *ERR is set to an errno value, or
501 to 0 if there is no relevant errno.
504 extern const char *pex_run (struct pex_obj *obj, int flags,
505 const char *executable, char * const *argv,
506 const char *outname, const char *errname,
509 /* As for pex_run (), but takes an extra parameter to enable the
510 environment for the child process to be specified.
512 ENV The environment for the child process, specified as
513 an array of character pointers. Each element of the
514 array should point to a string of the form VAR=VALUE,
515 with the exception of the last element which must be
519 extern const char *pex_run_in_environment (struct pex_obj *obj, int flags,
520 const char *executable,
524 const char *errname, int *err);
526 /* Return a stream for a temporary file to pass to the first program
527 in the pipeline as input. The file name is chosen as for pex_run.
528 pex_run closes the file automatically; don't close it yourself. */
530 extern FILE *pex_input_file (struct pex_obj *obj, int flags,
531 const char *in_name);
533 /* Return a stream for a pipe connected to the standard input of the
534 first program in the pipeline. You must have passed
535 `PEX_USE_PIPES' to `pex_init'. Close the returned stream
538 extern FILE *pex_input_pipe (struct pex_obj *obj, int binary);
540 /* Read the standard output of the last program to be executed.
541 pex_run can not be called after this. BINARY should be non-zero if
542 the file should be opened in binary mode; this is ignored on Unix.
543 Returns NULL on error. Don't call fclose on the returned FILE; it
544 will be closed by pex_free. */
546 extern FILE *pex_read_output (struct pex_obj *, int binary);
548 /* Read the standard error of the last program to be executed.
549 pex_run can not be called after this. BINARY should be non-zero if
550 the file should be opened in binary mode; this is ignored on Unix.
551 Returns NULL on error. Don't call fclose on the returned FILE; it
552 will be closed by pex_free. */
554 extern FILE *pex_read_err (struct pex_obj *, int binary);
556 /* Return exit status of all programs in VECTOR. COUNT indicates the
557 size of VECTOR. The status codes in the vector are in the order of
558 the calls to pex_run. Returns 0 on error, 1 on success. */
560 extern int pex_get_status (struct pex_obj *, int count, int *vector);
562 /* Return times of all programs in VECTOR. COUNT indicates the size
563 of VECTOR. struct pex_time is really just struct timeval, but that
564 is not portable to all systems. Returns 0 on error, 1 on
569 unsigned long user_seconds;
570 unsigned long user_microseconds;
571 unsigned long system_seconds;
572 unsigned long system_microseconds;
575 extern int pex_get_times (struct pex_obj *, int count,
576 struct pex_time *vector);
578 /* Clean up a pex_obj. If you have not called pex_get_times or
579 pex_get_status, this will try to kill the subprocesses. */
581 extern void pex_free (struct pex_obj *);
583 /* Just execute one program. Return value is as for pex_run.
584 FLAGS Combination of PEX_SEARCH and PEX_STDERR_TO_STDOUT.
585 EXECUTABLE As for pex_run.
587 PNAME As for pex_init.
588 OUTNAME As for pex_run when PEX_LAST is set.
589 ERRNAME As for pex_run.
590 STATUS Set to exit status on success.
594 extern const char *pex_one (int flags, const char *executable,
595 char * const *argv, const char *pname,
596 const char *outname, const char *errname,
597 int *status, int *err);
599 /* pexecute and pwait are the old pexecute interface, still here for
600 backward compatibility. Don't use these for new code. Instead,
601 use pex_init/pex_run/pex_get_status/pex_free, or pex_one. */
603 /* Definitions used by the pexecute routine. */
605 #define PEXECUTE_FIRST 1
606 #define PEXECUTE_LAST 2
607 #define PEXECUTE_ONE (PEXECUTE_FIRST + PEXECUTE_LAST)
608 #define PEXECUTE_SEARCH 4
609 #define PEXECUTE_VERBOSE 8
611 /* Execute a program. */
613 extern int pexecute (const char *, char * const *, const char *,
614 const char *, char **, char **, int);
616 /* Wait for pexecute to finish. */
618 extern int pwait (int, int *, int);
620 #if !HAVE_DECL_ASPRINTF
621 /* Like sprintf but provides a pointer to malloc'd storage, which must
622 be freed by the caller. */
624 extern int asprintf (char **, const char *, ...) ATTRIBUTE_PRINTF_2;
627 #if !HAVE_DECL_VASPRINTF
628 /* Like vsprintf but provides a pointer to malloc'd storage, which
629 must be freed by the caller. */
631 extern int vasprintf (char **, const char *, va_list) ATTRIBUTE_PRINTF(2,0);
634 #if defined(HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
635 /* Like sprintf but prints at most N characters. */
636 extern int snprintf (char *, size_t, const char *, ...) ATTRIBUTE_PRINTF_3;
639 #if defined(HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF
640 /* Like vsprintf but prints at most N characters. */
641 extern int vsnprintf (char *, size_t, const char *, va_list) ATTRIBUTE_PRINTF(3,0);
644 #if defined (HAVE_DECL_STRNLEN) && !HAVE_DECL_STRNLEN
645 extern size_t strnlen (const char *, size_t);
648 #if defined(HAVE_DECL_STRVERSCMP) && !HAVE_DECL_STRVERSCMP
649 /* Compare version strings. */
650 extern int strverscmp (const char *, const char *);
653 /* Set the title of a process */
654 extern void setproctitle (const char *name, ...);
656 /* Increase stack limit if possible. */
657 extern void stack_limit_increase (unsigned long);
659 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
661 /* Drastically simplified alloca configurator. If we're using GCC,
662 we use __builtin_alloca; otherwise we use the C alloca. The C
663 alloca is always available. You can override GCC by defining
664 USE_C_ALLOCA yourself. The canonical autoconf macro C_ALLOCA is
665 also set/unset as it is often used to indicate whether code needs
666 to call alloca(0). */
667 extern void *C_alloca (size_t) ATTRIBUTE_MALLOC;
669 #if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA
670 # define alloca(x) __builtin_alloca(x)
672 # define ASTRDUP(X) \
673 (__extension__ ({ const char *const libiberty_optr = (X); \
674 const unsigned long libiberty_len = strlen (libiberty_optr) + 1; \
675 char *const libiberty_nptr = (char *const) alloca (libiberty_len); \
676 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len); }))
678 # define alloca(x) C_alloca(x)
680 # define USE_C_ALLOCA 1
683 extern const char *libiberty_optr;
684 extern char *libiberty_nptr;
685 extern unsigned long libiberty_len;
686 # define ASTRDUP(X) \
687 (libiberty_optr = (X), \
688 libiberty_len = strlen (libiberty_optr) + 1, \
689 libiberty_nptr = (char *) alloca (libiberty_len), \
690 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len))
698 #endif /* ! defined (LIBIBERTY_H) */