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[official-gcc.git] / include / libiberty.h
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1 /* Function declarations for libiberty.
3 Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
4 2006, 2007, 2008, 2009 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)
16 any later version.
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. */
36 #ifndef LIBIBERTY_H
37 #define LIBIBERTY_H
39 #ifdef __cplusplus
40 extern "C" {
41 #endif
43 #include "ansidecl.h"
45 /* Get a definition for size_t. */
46 #include <stddef.h>
47 /* Get a definition for va_list. */
48 #include <stdarg.h>
50 #include <stdio.h>
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 PARAMS ((int *, char ***));
90 /* Write argv to an @-file, inserting necessary quoting. */
92 extern int writeargv PARAMS ((char **, FILE *));
94 /* Return the last component of a path name. Note that we can't use a
95 prototype here because the parameter is declared inconsistently
96 across different systems, sometimes as "char *" and sometimes as
97 "const char *" */
99 /* HAVE_DECL_* is a three-state macro: undefined, 0 or 1. If it is
100 undefined, we haven't run the autoconf check so provide the
101 declaration without arguments. If it is 0, we checked and failed
102 to find the declaration so provide a fully prototyped one. If it
103 is 1, we found it so don't provide any declaration at all. */
104 #if !HAVE_DECL_BASENAME
105 #if defined (__GNU_LIBRARY__ ) || defined (__linux__) || defined (__FreeBSD__) || defined (__OpenBSD__) || defined(__NetBSD__) || defined (__CYGWIN__) || defined (__CYGWIN32__) || defined (__MINGW32__) || defined (HAVE_DECL_BASENAME)
106 extern char *basename (const char *);
107 #else
108 /* Do not allow basename to be used if there is no prototype seen. We
109 either need to use the above prototype or have one from
110 autoconf which would result in HAVE_DECL_BASENAME being set. */
111 #define basename basename_cannot_be_used_without_a_prototype
112 #endif
113 #endif
115 /* A well-defined basename () that is always compiled in. */
117 extern const char *lbasename (const char *);
119 /* A well-defined realpath () that is always compiled in. */
121 extern char *lrealpath (const char *);
123 /* Concatenate an arbitrary number of strings. You must pass NULL as
124 the last argument of this function, to terminate the list of
125 strings. Allocates memory using xmalloc. */
127 extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL;
129 /* Concatenate an arbitrary number of strings. You must pass NULL as
130 the last argument of this function, to terminate the list of
131 strings. Allocates memory using xmalloc. The first argument is
132 not one of the strings to be concatenated, but if not NULL is a
133 pointer to be freed after the new string is created, similar to the
134 way xrealloc works. */
136 extern char *reconcat (char *, const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL;
138 /* Determine the length of concatenating an arbitrary number of
139 strings. You must pass NULL as the last argument of this function,
140 to terminate the list of strings. */
142 extern unsigned long concat_length (const char *, ...) ATTRIBUTE_SENTINEL;
144 /* Concatenate an arbitrary number of strings into a SUPPLIED area of
145 memory. You must pass NULL as the last argument of this function,
146 to terminate the list of strings. The supplied memory is assumed
147 to be large enough. */
149 extern char *concat_copy (char *, const char *, ...) ATTRIBUTE_SENTINEL;
151 /* Concatenate an arbitrary number of strings into a GLOBAL area of
152 memory. You must pass NULL as the last argument of this function,
153 to terminate the list of strings. The supplied memory is assumed
154 to be large enough. */
156 extern char *concat_copy2 (const char *, ...) ATTRIBUTE_SENTINEL;
158 /* This is the global area used by concat_copy2. */
160 extern char *libiberty_concat_ptr;
162 /* Concatenate an arbitrary number of strings. You must pass NULL as
163 the last argument of this function, to terminate the list of
164 strings. Allocates memory using alloca. The arguments are
165 evaluated twice! */
166 #define ACONCAT(ACONCAT_PARAMS) \
167 (libiberty_concat_ptr = (char *) alloca (concat_length ACONCAT_PARAMS + 1), \
168 concat_copy2 ACONCAT_PARAMS)
170 /* Check whether two file descriptors refer to the same file. */
172 extern int fdmatch (int fd1, int fd2);
174 /* Return the position of the first bit set in the argument. */
175 /* Prototypes vary from system to system, so we only provide a
176 prototype on systems where we know that we need it. */
177 #if defined (HAVE_DECL_FFS) && !HAVE_DECL_FFS
178 extern int ffs(int);
179 #endif
181 /* Get the working directory. The result is cached, so don't call
182 chdir() between calls to getpwd(). */
184 extern char * getpwd (void);
186 /* Get the current time. */
187 /* Prototypes vary from system to system, so we only provide a
188 prototype on systems where we know that we need it. */
189 #ifdef __MINGW32__
190 /* Forward declaration to avoid #include <sys/time.h>. */
191 struct timeval;
192 extern int gettimeofday (struct timeval *, void *);
193 #endif
195 /* Get the amount of time the process has run, in microseconds. */
197 extern long get_run_time (void);
199 /* Generate a relocated path to some installation directory. Allocates
200 return value using malloc. */
202 extern char *make_relative_prefix (const char *, const char *,
203 const char *) ATTRIBUTE_MALLOC;
205 /* Generate a relocated path to some installation directory without
206 attempting to follow any soft links. Allocates
207 return value using malloc. */
209 extern char *make_relative_prefix_ignore_links (const char *, const char *,
210 const char *) ATTRIBUTE_MALLOC;
212 /* Choose a temporary directory to use for scratch files. */
214 extern char *choose_temp_base (void) ATTRIBUTE_MALLOC;
216 /* Return a temporary file name or NULL if unable to create one. */
218 extern char *make_temp_file (const char *) ATTRIBUTE_MALLOC;
220 /* Remove a link to a file unless it is special. */
222 extern int unlink_if_ordinary (const char *);
224 /* Allocate memory filled with spaces. Allocates using malloc. */
226 extern const char *spaces (int count);
228 /* Return the maximum error number for which strerror will return a
229 string. */
231 extern int errno_max (void);
233 /* Return the name of an errno value (e.g., strerrno (EINVAL) returns
234 "EINVAL"). */
236 extern const char *strerrno (int);
238 /* Given the name of an errno value, return the value. */
240 extern int strtoerrno (const char *);
242 /* ANSI's strerror(), but more robust. */
244 extern char *xstrerror (int);
246 /* Return the maximum signal number for which strsignal will return a
247 string. */
249 extern int signo_max (void);
251 /* Return a signal message string for a signal number
252 (e.g., strsignal (SIGHUP) returns something like "Hangup"). */
253 /* This is commented out as it can conflict with one in system headers.
254 We still document its existence though. */
256 /*extern const char *strsignal (int);*/
258 /* Return the name of a signal number (e.g., strsigno (SIGHUP) returns
259 "SIGHUP"). */
261 extern const char *strsigno (int);
263 /* Given the name of a signal, return its number. */
265 extern int strtosigno (const char *);
267 /* Register a function to be run by xexit. Returns 0 on success. */
269 extern int xatexit (void (*fn) (void));
271 /* Exit, calling all the functions registered with xatexit. */
273 extern void xexit (int status) ATTRIBUTE_NORETURN;
275 /* Set the program name used by xmalloc. */
277 extern void xmalloc_set_program_name (const char *);
279 /* Report an allocation failure. */
280 extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN;
282 /* Allocate memory without fail. If malloc fails, this will print a
283 message to stderr (using the name set by xmalloc_set_program_name,
284 if any) and then call xexit. */
286 extern void *xmalloc (size_t) ATTRIBUTE_MALLOC;
288 /* Reallocate memory without fail. This works like xmalloc. Note,
289 realloc type functions are not suitable for attribute malloc since
290 they may return the same address across multiple calls. */
292 extern void *xrealloc (void *, size_t);
294 /* Allocate memory without fail and set it to zero. This works like
295 xmalloc. */
297 extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC;
299 /* Copy a string into a memory buffer without fail. */
301 extern char *xstrdup (const char *) ATTRIBUTE_MALLOC;
303 /* Copy at most N characters from string into a buffer without fail. */
305 extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC;
307 /* Copy an existing memory buffer to a new memory buffer without fail. */
309 extern void *xmemdup (const void *, size_t, size_t) ATTRIBUTE_MALLOC;
311 /* Physical memory routines. Return values are in BYTES. */
312 extern double physmem_total (void);
313 extern double physmem_available (void);
315 /* Compute the 32-bit CRC of a block of memory. */
316 extern unsigned int xcrc32 (const unsigned char *, int, unsigned int);
318 /* These macros provide a K&R/C89/C++-friendly way of allocating structures
319 with nice encapsulation. The XDELETE*() macros are technically
320 superfluous, but provided here for symmetry. Using them consistently
321 makes it easier to update client code to use different allocators such
322 as new/delete and new[]/delete[]. */
324 /* Scalar allocators. */
326 #define XALLOCA(T) ((T *) alloca (sizeof (T)))
327 #define XNEW(T) ((T *) xmalloc (sizeof (T)))
328 #define XCNEW(T) ((T *) xcalloc (1, sizeof (T)))
329 #define XDUP(T, P) ((T *) xmemdup ((P), sizeof (T), sizeof (T)))
330 #define XDELETE(P) free ((void*) (P))
332 /* Array allocators. */
334 #define XALLOCAVEC(T, N) ((T *) alloca (sizeof (T) * (N)))
335 #define XNEWVEC(T, N) ((T *) xmalloc (sizeof (T) * (N)))
336 #define XCNEWVEC(T, N) ((T *) xcalloc ((N), sizeof (T)))
337 #define XDUPVEC(T, P, N) ((T *) xmemdup ((P), sizeof (T) * (N), sizeof (T) * (N)))
338 #define XRESIZEVEC(T, P, N) ((T *) xrealloc ((void *) (P), sizeof (T) * (N)))
339 #define XDELETEVEC(P) free ((void*) (P))
341 /* Allocators for variable-sized structures and raw buffers. */
343 #define XALLOCAVAR(T, S) ((T *) alloca ((S)))
344 #define XNEWVAR(T, S) ((T *) xmalloc ((S)))
345 #define XCNEWVAR(T, S) ((T *) xcalloc (1, (S)))
346 #define XDUPVAR(T, P, S1, S2) ((T *) xmemdup ((P), (S1), (S2)))
347 #define XRESIZEVAR(T, P, S) ((T *) xrealloc ((P), (S)))
349 /* Type-safe obstack allocator. */
351 #define XOBNEW(O, T) ((T *) obstack_alloc ((O), sizeof (T)))
352 #define XOBNEWVEC(O, T, N) ((T *) obstack_alloc ((O), sizeof (T) * (N)))
353 #define XOBNEWVAR(O, T, S) ((T *) obstack_alloc ((O), (S)))
354 #define XOBFINISH(O, T) ((T) obstack_finish ((O)))
356 /* hex character manipulation routines */
358 #define _hex_array_size 256
359 #define _hex_bad 99
360 extern const unsigned char _hex_value[_hex_array_size];
361 extern void hex_init (void);
362 #define hex_p(c) (hex_value (c) != _hex_bad)
363 /* If you change this, note well: Some code relies on side effects in
364 the argument being performed exactly once. */
365 #define hex_value(c) ((unsigned int) _hex_value[(unsigned char) (c)])
367 /* Flags for pex_init. These are bits to be or'ed together. */
369 /* Record subprocess times, if possible. */
370 #define PEX_RECORD_TIMES 0x1
372 /* Use pipes for communication between processes, if possible. */
373 #define PEX_USE_PIPES 0x2
375 /* Save files used for communication between processes. */
376 #define PEX_SAVE_TEMPS 0x4
378 /* Prepare to execute one or more programs, with standard output of
379 each program fed to standard input of the next.
380 FLAGS As above.
381 PNAME The name of the program to report in error messages.
382 TEMPBASE A base name to use for temporary files; may be NULL to
383 use a random name.
384 Returns NULL on error. */
386 extern struct pex_obj *pex_init (int flags, const char *pname,
387 const char *tempbase);
389 /* Flags for pex_run. These are bits to be or'ed together. */
391 /* Last program in pipeline. Standard output of program goes to
392 OUTNAME, or, if OUTNAME is NULL, to standard output of caller. Do
393 not set this if you want to call pex_read_output. After this is
394 set, pex_run may no longer be called with the same struct
395 pex_obj. */
396 #define PEX_LAST 0x1
398 /* Search for program in executable search path. */
399 #define PEX_SEARCH 0x2
401 /* OUTNAME is a suffix. */
402 #define PEX_SUFFIX 0x4
404 /* Send program's standard error to standard output. */
405 #define PEX_STDERR_TO_STDOUT 0x8
407 /* Input file should be opened in binary mode. This flag is ignored
408 on Unix. */
409 #define PEX_BINARY_INPUT 0x10
411 /* Output file should be opened in binary mode. This flag is ignored
412 on Unix. For proper behaviour PEX_BINARY_INPUT and
413 PEX_BINARY_OUTPUT have to match appropriately--i.e., a call using
414 PEX_BINARY_OUTPUT should be followed by a call using
415 PEX_BINARY_INPUT. */
416 #define PEX_BINARY_OUTPUT 0x20
418 /* Capture stderr to a pipe. The output can be read by
419 calling pex_read_err and reading from the returned
420 FILE object. This flag may be specified only for
421 the last program in a pipeline.
423 This flag is supported only on Unix and Windows. */
424 #define PEX_STDERR_TO_PIPE 0x40
426 /* Capture stderr in binary mode. This flag is ignored
427 on Unix. */
428 #define PEX_BINARY_ERROR 0x80
431 /* Execute one program. Returns NULL on success. On error returns an
432 error string (typically just the name of a system call); the error
433 string is statically allocated.
435 OBJ Returned by pex_init.
437 FLAGS As above.
439 EXECUTABLE The program to execute.
441 ARGV NULL terminated array of arguments to pass to the program.
443 OUTNAME Sets the output file name as follows:
445 PEX_SUFFIX set (OUTNAME may not be NULL):
446 TEMPBASE parameter to pex_init not NULL:
447 Output file name is the concatenation of TEMPBASE
448 and OUTNAME.
449 TEMPBASE is NULL:
450 Output file name is a random file name ending in
451 OUTNAME.
452 PEX_SUFFIX not set:
453 OUTNAME not NULL:
454 Output file name is OUTNAME.
455 OUTNAME NULL, TEMPBASE not NULL:
456 Output file name is randomly chosen using
457 TEMPBASE.
458 OUTNAME NULL, TEMPBASE NULL:
459 Output file name is randomly chosen.
461 If PEX_LAST is not set, the output file name is the
462 name to use for a temporary file holding stdout, if
463 any (there will not be a file if PEX_USE_PIPES is set
464 and the system supports pipes). If a file is used, it
465 will be removed when no longer needed unless
466 PEX_SAVE_TEMPS is set.
468 If PEX_LAST is set, and OUTNAME is not NULL, standard
469 output is written to the output file name. The file
470 will not be removed. If PEX_LAST and PEX_SUFFIX are
471 both set, TEMPBASE may not be NULL.
473 ERRNAME If not NULL, this is the name of a file to which
474 standard error is written. If NULL, standard error of
475 the program is standard error of the caller.
477 ERR On an error return, *ERR is set to an errno value, or
478 to 0 if there is no relevant errno.
481 extern const char *pex_run (struct pex_obj *obj, int flags,
482 const char *executable, char * const *argv,
483 const char *outname, const char *errname,
484 int *err);
486 /* As for pex_run (), but takes an extra parameter to enable the
487 environment for the child process to be specified.
489 ENV The environment for the child process, specified as
490 an array of character pointers. Each element of the
491 array should point to a string of the form VAR=VALUE,
492 with the exception of the last element which must be
493 a null pointer.
496 extern const char *pex_run_in_environment (struct pex_obj *obj, int flags,
497 const char *executable,
498 char * const *argv,
499 char * const *env,
500 const char *outname,
501 const char *errname, int *err);
503 /* Return a stream for a temporary file to pass to the first program
504 in the pipeline as input. The file name is chosen as for pex_run.
505 pex_run closes the file automatically; don't close it yourself. */
507 extern FILE *pex_input_file (struct pex_obj *obj, int flags,
508 const char *in_name);
510 /* Return a stream for a pipe connected to the standard input of the
511 first program in the pipeline. You must have passed
512 `PEX_USE_PIPES' to `pex_init'. Close the returned stream
513 yourself. */
515 extern FILE *pex_input_pipe (struct pex_obj *obj, int binary);
517 /* Read the standard output of the last program to be executed.
518 pex_run can not be called after this. BINARY should be non-zero if
519 the file should be opened in binary mode; this is ignored on Unix.
520 Returns NULL on error. Don't call fclose on the returned FILE; it
521 will be closed by pex_free. */
523 extern FILE *pex_read_output (struct pex_obj *, int binary);
525 /* Read the standard error of the last program to be executed.
526 pex_run can not be called after this. BINARY should be non-zero if
527 the file should be opened in binary mode; this is ignored on Unix.
528 Returns NULL on error. Don't call fclose on the returned FILE; it
529 will be closed by pex_free. */
531 extern FILE *pex_read_err (struct pex_obj *, int binary);
533 /* Return exit status of all programs in VECTOR. COUNT indicates the
534 size of VECTOR. The status codes in the vector are in the order of
535 the calls to pex_run. Returns 0 on error, 1 on success. */
537 extern int pex_get_status (struct pex_obj *, int count, int *vector);
539 /* Return times of all programs in VECTOR. COUNT indicates the size
540 of VECTOR. struct pex_time is really just struct timeval, but that
541 is not portable to all systems. Returns 0 on error, 1 on
542 success. */
544 struct pex_time
546 unsigned long user_seconds;
547 unsigned long user_microseconds;
548 unsigned long system_seconds;
549 unsigned long system_microseconds;
552 extern int pex_get_times (struct pex_obj *, int count,
553 struct pex_time *vector);
555 /* Clean up a pex_obj. If you have not called pex_get_times or
556 pex_get_status, this will try to kill the subprocesses. */
558 extern void pex_free (struct pex_obj *);
560 /* Just execute one program. Return value is as for pex_run.
561 FLAGS Combination of PEX_SEARCH and PEX_STDERR_TO_STDOUT.
562 EXECUTABLE As for pex_run.
563 ARGV As for pex_run.
564 PNAME As for pex_init.
565 OUTNAME As for pex_run when PEX_LAST is set.
566 ERRNAME As for pex_run.
567 STATUS Set to exit status on success.
568 ERR As for pex_run.
571 extern const char *pex_one (int flags, const char *executable,
572 char * const *argv, const char *pname,
573 const char *outname, const char *errname,
574 int *status, int *err);
576 /* pexecute and pwait are the old pexecute interface, still here for
577 backward compatibility. Don't use these for new code. Instead,
578 use pex_init/pex_run/pex_get_status/pex_free, or pex_one. */
580 /* Definitions used by the pexecute routine. */
582 #define PEXECUTE_FIRST 1
583 #define PEXECUTE_LAST 2
584 #define PEXECUTE_ONE (PEXECUTE_FIRST + PEXECUTE_LAST)
585 #define PEXECUTE_SEARCH 4
586 #define PEXECUTE_VERBOSE 8
588 /* Execute a program. */
590 extern int pexecute (const char *, char * const *, const char *,
591 const char *, char **, char **, int);
593 /* Wait for pexecute to finish. */
595 extern int pwait (int, int *, int);
597 #if !HAVE_DECL_ASPRINTF
598 /* Like sprintf but provides a pointer to malloc'd storage, which must
599 be freed by the caller. */
601 extern int asprintf (char **, const char *, ...) ATTRIBUTE_PRINTF_2;
602 #endif
604 #if !HAVE_DECL_VASPRINTF
605 /* Like vsprintf but provides a pointer to malloc'd storage, which
606 must be freed by the caller. */
608 extern int vasprintf (char **, const char *, va_list) ATTRIBUTE_PRINTF(2,0);
609 #endif
611 #if defined(HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
612 /* Like sprintf but prints at most N characters. */
613 extern int snprintf (char *, size_t, const char *, ...) ATTRIBUTE_PRINTF_3;
614 #endif
616 #if defined(HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF
617 /* Like vsprintf but prints at most N characters. */
618 extern int vsnprintf (char *, size_t, const char *, va_list) ATTRIBUTE_PRINTF(3,0);
619 #endif
621 #if defined(HAVE_DECL_STRVERSCMP) && !HAVE_DECL_STRVERSCMP
622 /* Compare version strings. */
623 extern int strverscmp (const char *, const char *);
624 #endif
626 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
628 /* Drastically simplified alloca configurator. If we're using GCC,
629 we use __builtin_alloca; otherwise we use the C alloca. The C
630 alloca is always available. You can override GCC by defining
631 USE_C_ALLOCA yourself. The canonical autoconf macro C_ALLOCA is
632 also set/unset as it is often used to indicate whether code needs
633 to call alloca(0). */
634 extern void *C_alloca (size_t) ATTRIBUTE_MALLOC;
635 #undef alloca
636 #if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA
637 # define alloca(x) __builtin_alloca(x)
638 # undef C_ALLOCA
639 # define ASTRDUP(X) \
640 (__extension__ ({ const char *const libiberty_optr = (X); \
641 const unsigned long libiberty_len = strlen (libiberty_optr) + 1; \
642 char *const libiberty_nptr = (char *const) alloca (libiberty_len); \
643 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len); }))
644 #else
645 # define alloca(x) C_alloca(x)
646 # undef USE_C_ALLOCA
647 # define USE_C_ALLOCA 1
648 # undef C_ALLOCA
649 # define C_ALLOCA 1
650 extern const char *libiberty_optr;
651 extern char *libiberty_nptr;
652 extern unsigned long libiberty_len;
653 # define ASTRDUP(X) \
654 (libiberty_optr = (X), \
655 libiberty_len = strlen (libiberty_optr) + 1, \
656 libiberty_nptr = (char *) alloca (libiberty_len), \
657 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len))
658 #endif
660 #ifdef __cplusplus
662 #endif
665 #endif /* ! defined (LIBIBERTY_H) */