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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.2.2/] [include/] [libiberty.h] - Blame information for rev 298

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/* Function declarations for libiberty.
2
 
3
   Copyright 2001, 2002, 2005 Free Software Foundation, Inc.
4
 
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.
11
 
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)
15
   any later version.
16
 
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.
21
 
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.
26
 
27
   Written by Cygnus Support, 1994.
28
 
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.  */
34
 
35
#ifndef LIBIBERTY_H
36
#define LIBIBERTY_H
37
 
38
#ifdef __cplusplus
39
extern "C" {
40
#endif
41
 
42
#include "ansidecl.h"
43
 
44
/* Get a definition for size_t.  */
45
#include <stddef.h>
46
/* Get a definition for va_list.  */
47
#include <stdarg.h>
48
 
49
#include <stdio.h>
50
 
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.  */
54
 
55
extern void unlock_stream (FILE *);
56
 
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.  */
60
 
61
extern void unlock_std_streams (void);
62
 
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.  */
66
 
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 *);
70
 
71
/* Build an argument vector from a string.  Allocates memory using
72
   malloc.  Use freeargv to free the vector.  */
73
 
74
extern char **buildargv (const char *) ATTRIBUTE_MALLOC;
75
 
76
/* Free a vector returned by buildargv.  */
77
 
78
extern void freeargv (char **);
79
 
80
/* Duplicate an argument vector. Allocates memory using malloc.  Use
81
   freeargv to free the vector.  */
82
 
83
extern char **dupargv (char **) ATTRIBUTE_MALLOC;
84
 
85
/* Expand "@file" arguments in argv.  */
86
 
87
extern void expandargv PARAMS ((int *, char ***));
88
 
89
/* Return the last component of a path name.  Note that we can't use a
90
   prototype here because the parameter is declared inconsistently
91
   across different systems, sometimes as "char *" and sometimes as
92
   "const char *" */
93
 
94
/* HAVE_DECL_* is a three-state macro: undefined, 0 or 1.  If it is
95
   undefined, we haven't run the autoconf check so provide the
96
   declaration without arguments.  If it is 0, we checked and failed
97
   to find the declaration so provide a fully prototyped one.  If it
98
   is 1, we found it so don't provide any declaration at all.  */
99
#if !HAVE_DECL_BASENAME
100
#if defined (__GNU_LIBRARY__ ) || defined (__linux__) || defined (__FreeBSD__) || defined (__OpenBSD__) || defined(__NetBSD__) || defined (__CYGWIN__) || defined (__CYGWIN32__) || defined (__MINGW32__) || defined (HAVE_DECL_BASENAME)
101
extern char *basename (const char *);
102
#else
103
/* Do not allow basename to be used if there is no prototype seen.  We
104
   either need to use the above prototype or have one from
105
   autoconf which would result in HAVE_DECL_BASENAME being set.  */
106
#define basename basename_cannot_be_used_without_a_prototype
107
#endif
108
#endif
109
 
110
/* A well-defined basename () that is always compiled in.  */
111
 
112
extern const char *lbasename (const char *);
113
 
114
/* A well-defined realpath () that is always compiled in.  */
115
 
116
extern char *lrealpath (const char *);
117
 
118
/* Concatenate an arbitrary number of strings.  You must pass NULL as
119
   the last argument of this function, to terminate the list of
120
   strings.  Allocates memory using xmalloc.  */
121
 
122
extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL;
123
 
124
/* Concatenate an arbitrary number of strings.  You must pass NULL as
125
   the last argument of this function, to terminate the list of
126
   strings.  Allocates memory using xmalloc.  The first argument is
127
   not one of the strings to be concatenated, but if not NULL is a
128
   pointer to be freed after the new string is created, similar to the
129
   way xrealloc works.  */
130
 
131
extern char *reconcat (char *, const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL;
132
 
133
/* Determine the length of concatenating an arbitrary number of
134
   strings.  You must pass NULL as the last argument of this function,
135
   to terminate the list of strings.  */
136
 
137
extern unsigned long concat_length (const char *, ...) ATTRIBUTE_SENTINEL;
138
 
139
/* Concatenate an arbitrary number of strings into a SUPPLIED area of
140
   memory.  You must pass NULL as the last argument of this function,
141
   to terminate the list of strings.  The supplied memory is assumed
142
   to be large enough.  */
143
 
144
extern char *concat_copy (char *, const char *, ...) ATTRIBUTE_SENTINEL;
145
 
146
/* Concatenate an arbitrary number of strings into a GLOBAL area of
147
   memory.  You must pass NULL as the last argument of this function,
148
   to terminate the list of strings.  The supplied memory is assumed
149
   to be large enough.  */
150
 
151
extern char *concat_copy2 (const char *, ...) ATTRIBUTE_SENTINEL;
152
 
153
/* This is the global area used by concat_copy2.  */
154
 
155
extern char *libiberty_concat_ptr;
156
 
157
/* Concatenate an arbitrary number of strings.  You must pass NULL as
158
   the last argument of this function, to terminate the list of
159
   strings.  Allocates memory using alloca.  The arguments are
160
   evaluated twice!  */
161
#define ACONCAT(ACONCAT_PARAMS) \
162
  (libiberty_concat_ptr = (char *) alloca (concat_length ACONCAT_PARAMS + 1), \
163
   concat_copy2 ACONCAT_PARAMS)
164
 
165
/* Check whether two file descriptors refer to the same file.  */
166
 
167
extern int fdmatch (int fd1, int fd2);
168
 
169
/* Return the position of the first bit set in the argument.  */
170
/* Prototypes vary from system to system, so we only provide a
171
   prototype on systems where we know that we need it.  */
172
#if defined (HAVE_DECL_FFS) && !HAVE_DECL_FFS
173
extern int ffs(int);
174
#endif
175
 
176
/* Get the working directory.  The result is cached, so don't call
177
   chdir() between calls to getpwd().  */
178
 
179
extern char * getpwd (void);
180
 
181
/* Get the current time.  */
182
/* Prototypes vary from system to system, so we only provide a
183
   prototype on systems where we know that we need it.  */
184
#ifdef __MINGW32__
185
/* Forward declaration to avoid #include <sys/time.h>.   */
186
struct timeval;
187
extern int gettimeofday (struct timeval *, void *);
188
#endif
189
 
190
/* Get the amount of time the process has run, in microseconds.  */
191
 
192
extern long get_run_time (void);
193
 
194
/* Generate a relocated path to some installation directory.  Allocates
195
   return value using malloc.  */
196
 
197
extern char *make_relative_prefix (const char *, const char *,
198
                                   const char *) ATTRIBUTE_MALLOC;
199
 
200
/* Choose a temporary directory to use for scratch files.  */
201
 
202
extern char *choose_temp_base (void) ATTRIBUTE_MALLOC;
203
 
204
/* Return a temporary file name or NULL if unable to create one.  */
205
 
206
extern char *make_temp_file (const char *) ATTRIBUTE_MALLOC;
207
 
208
/* Remove a link to a file unless it is special. */
209
 
210
extern int unlink_if_ordinary (const char *);
211
 
212
/* Allocate memory filled with spaces.  Allocates using malloc.  */
213
 
214
extern const char *spaces (int count);
215
 
216
/* Return the maximum error number for which strerror will return a
217
   string.  */
218
 
219
extern int errno_max (void);
220
 
221
/* Return the name of an errno value (e.g., strerrno (EINVAL) returns
222
   "EINVAL").  */
223
 
224
extern const char *strerrno (int);
225
 
226
/* Given the name of an errno value, return the value.  */
227
 
228
extern int strtoerrno (const char *);
229
 
230
/* ANSI's strerror(), but more robust.  */
231
 
232
extern char *xstrerror (int);
233
 
234
/* Return the maximum signal number for which strsignal will return a
235
   string.  */
236
 
237
extern int signo_max (void);
238
 
239
/* Return a signal message string for a signal number
240
   (e.g., strsignal (SIGHUP) returns something like "Hangup").  */
241
/* This is commented out as it can conflict with one in system headers.
242
   We still document its existence though.  */
243
 
244
/*extern const char *strsignal (int);*/
245
 
246
/* Return the name of a signal number (e.g., strsigno (SIGHUP) returns
247
   "SIGHUP").  */
248
 
249
extern const char *strsigno (int);
250
 
251
/* Given the name of a signal, return its number.  */
252
 
253
extern int strtosigno (const char *);
254
 
255
/* Register a function to be run by xexit.  Returns 0 on success.  */
256
 
257
extern int xatexit (void (*fn) (void));
258
 
259
/* Exit, calling all the functions registered with xatexit.  */
260
 
261
extern void xexit (int status) ATTRIBUTE_NORETURN;
262
 
263
/* Set the program name used by xmalloc.  */
264
 
265
extern void xmalloc_set_program_name (const char *);
266
 
267
/* Report an allocation failure.  */
268
extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN;
269
 
270
/* Allocate memory without fail.  If malloc fails, this will print a
271
   message to stderr (using the name set by xmalloc_set_program_name,
272
   if any) and then call xexit.  */
273
 
274
extern void *xmalloc (size_t) ATTRIBUTE_MALLOC;
275
 
276
/* Reallocate memory without fail.  This works like xmalloc.  Note,
277
   realloc type functions are not suitable for attribute malloc since
278
   they may return the same address across multiple calls. */
279
 
280
extern void *xrealloc (void *, size_t);
281
 
282
/* Allocate memory without fail and set it to zero.  This works like
283
   xmalloc.  */
284
 
285
extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC;
286
 
287
/* Copy a string into a memory buffer without fail.  */
288
 
289
extern char *xstrdup (const char *) ATTRIBUTE_MALLOC;
290
 
291
/* Copy at most N characters from string into a buffer without fail.  */
292
 
293
extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC;
294
 
295
/* Copy an existing memory buffer to a new memory buffer without fail.  */
296
 
297
extern void *xmemdup (const void *, size_t, size_t) ATTRIBUTE_MALLOC;
298
 
299
/* Physical memory routines.  Return values are in BYTES.  */
300
extern double physmem_total (void);
301
extern double physmem_available (void);
302
 
303
 
304
/* These macros provide a K&R/C89/C++-friendly way of allocating structures
305
   with nice encapsulation.  The XDELETE*() macros are technically
306
   superfluous, but provided here for symmetry.  Using them consistently
307
   makes it easier to update client code to use different allocators such
308
   as new/delete and new[]/delete[].  */
309
 
310
/* Scalar allocators.  */
311
 
312
#define XNEW(T)                 ((T *) xmalloc (sizeof (T)))
313
#define XCNEW(T)                ((T *) xcalloc (1, sizeof (T)))
314
#define XDELETE(P)              free ((void*) (P))
315
 
316
/* Array allocators.  */
317
 
318
#define XNEWVEC(T, N)           ((T *) xmalloc (sizeof (T) * (N)))
319
#define XCNEWVEC(T, N)          ((T *) xcalloc ((N), sizeof (T)))
320
#define XRESIZEVEC(T, P, N)     ((T *) xrealloc ((void *) (P), sizeof (T) * (N)))
321
#define XDELETEVEC(P)           free ((void*) (P))
322
 
323
/* Allocators for variable-sized structures and raw buffers.  */
324
 
325
#define XNEWVAR(T, S)           ((T *) xmalloc ((S)))
326
#define XCNEWVAR(T, S)          ((T *) xcalloc (1, (S)))
327
#define XRESIZEVAR(T, P, S)     ((T *) xrealloc ((P), (S)))
328
 
329
/* Type-safe obstack allocator.  */
330
 
331
#define XOBNEW(O, T)            ((T *) obstack_alloc ((O), sizeof (T)))
332
#define XOBFINISH(O, T)         ((T) obstack_finish ((O)))
333
 
334
/* hex character manipulation routines */
335
 
336
#define _hex_array_size 256
337
#define _hex_bad        99
338
extern const unsigned char _hex_value[_hex_array_size];
339
extern void hex_init (void);
340
#define hex_p(c)        (hex_value (c) != _hex_bad)
341
/* If you change this, note well: Some code relies on side effects in
342
   the argument being performed exactly once.  */
343
#define hex_value(c)    ((unsigned int) _hex_value[(unsigned char) (c)])
344
 
345
/* Flags for pex_init.  These are bits to be or'ed together.  */
346
 
347
/* Record subprocess times, if possible.  */
348
#define PEX_RECORD_TIMES        0x1
349
 
350
/* Use pipes for communication between processes, if possible.  */
351
#define PEX_USE_PIPES           0x2
352
 
353
/* Save files used for communication between processes.  */
354
#define PEX_SAVE_TEMPS          0x4
355
 
356
/* Prepare to execute one or more programs, with standard output of
357
   each program fed to standard input of the next.
358
   FLAGS        As above.
359
   PNAME        The name of the program to report in error messages.
360
   TEMPBASE     A base name to use for temporary files; may be NULL to
361
                use a random name.
362
   Returns NULL on error.  */
363
 
364
extern struct pex_obj *pex_init (int flags, const char *pname,
365
                                 const char *tempbase);
366
 
367
/* Flags for pex_run.  These are bits to be or'ed together.  */
368
 
369
/* Last program in pipeline.  Standard output of program goes to
370
   OUTNAME, or, if OUTNAME is NULL, to standard output of caller.  Do
371
   not set this if you want to call pex_read_output.  After this is
372
   set, pex_run may no longer be called with the same struct
373
   pex_obj.  */
374
#define PEX_LAST                0x1
375
 
376
/* Search for program in executable search path.  */
377
#define PEX_SEARCH              0x2
378
 
379
/* OUTNAME is a suffix.  */
380
#define PEX_SUFFIX              0x4
381
 
382
/* Send program's standard error to standard output.  */
383
#define PEX_STDERR_TO_STDOUT    0x8
384
 
385
/* Input file should be opened in binary mode.  This flag is ignored
386
   on Unix.  */
387
#define PEX_BINARY_INPUT        0x10
388
 
389
/* Output file should be opened in binary mode.  This flag is ignored
390
   on Unix.  For proper behaviour PEX_BINARY_INPUT and
391
   PEX_BINARY_OUTPUT have to match appropriately--i.e., a call using
392
   PEX_BINARY_OUTPUT should be followed by a call using
393
   PEX_BINARY_INPUT.  */
394
#define PEX_BINARY_OUTPUT       0x20
395
 
396
/* Execute one program.  Returns NULL on success.  On error returns an
397
   error string (typically just the name of a system call); the error
398
   string is statically allocated.
399
 
400
   OBJ          Returned by pex_init.
401
 
402
   FLAGS        As above.
403
 
404
   EXECUTABLE   The program to execute.
405
 
406
   ARGV         NULL terminated array of arguments to pass to the program.
407
 
408
   OUTNAME      Sets the output file name as follows:
409
 
410
                PEX_SUFFIX set (OUTNAME may not be NULL):
411
                  TEMPBASE parameter to pex_init not NULL:
412
                    Output file name is the concatenation of TEMPBASE
413
                    and OUTNAME.
414
                  TEMPBASE is NULL:
415
                    Output file name is a random file name ending in
416
                    OUTNAME.
417
                PEX_SUFFIX not set:
418
                  OUTNAME not NULL:
419
                    Output file name is OUTNAME.
420
                  OUTNAME NULL, TEMPBASE not NULL:
421
                    Output file name is randomly chosen using
422
                    TEMPBASE.
423
                  OUTNAME NULL, TEMPBASE NULL:
424
                    Output file name is randomly chosen.
425
 
426
                If PEX_LAST is not set, the output file name is the
427
                name to use for a temporary file holding stdout, if
428
                any (there will not be a file if PEX_USE_PIPES is set
429
                and the system supports pipes).  If a file is used, it
430
                will be removed when no longer needed unless
431
                PEX_SAVE_TEMPS is set.
432
 
433
                If PEX_LAST is set, and OUTNAME is not NULL, standard
434
                output is written to the output file name.  The file
435
                will not be removed.  If PEX_LAST and PEX_SUFFIX are
436
                both set, TEMPBASE may not be NULL.
437
 
438
   ERRNAME      If not NULL, this is the name of a file to which
439
                standard error is written.  If NULL, standard error of
440
                the program is standard error of the caller.
441
 
442
   ERR          On an error return, *ERR is set to an errno value, or
443
                to 0 if there is no relevant errno.
444
*/
445
 
446
extern const char *pex_run (struct pex_obj *obj, int flags,
447
                            const char *executable, char * const *argv,
448
                            const char *outname, const char *errname,
449
                            int *err);
450
 
451
/* As for pex_run (), but takes an extra parameter to enable the
452
   environment for the child process to be specified.
453
 
454
   ENV          The environment for the child process, specified as
455
                an array of character pointers.  Each element of the
456
                array should point to a string of the form VAR=VALUE,
457
                with the exception of the last element which must be
458
                a null pointer.
459
*/
460
 
461
extern const char *pex_run_in_environment (struct pex_obj *obj, int flags,
462
                                           const char *executable,
463
                                           char * const *argv,
464
                                           char * const *env,
465
                                           const char *outname,
466
                                           const char *errname, int *err);
467
 
468
/* Return a stream for a temporary file to pass to the first program
469
   in the pipeline as input.  The file name is chosen as for pex_run.
470
   pex_run closes the file automatically; don't close it yourself.  */
471
 
472
extern FILE *pex_input_file (struct pex_obj *obj, int flags,
473
                             const char *in_name);
474
 
475
/* Return a stream for a pipe connected to the standard input of the
476
   first program in the pipeline.  You must have passed
477
   `PEX_USE_PIPES' to `pex_init'.  Close the returned stream
478
   yourself.  */
479
 
480
extern FILE *pex_input_pipe (struct pex_obj *obj, int binary);
481
 
482
/* Read the standard output of the last program to be executed.
483
   pex_run can not be called after this.  BINARY should be non-zero if
484
   the file should be opened in binary mode; this is ignored on Unix.
485
   Returns NULL on error.  Don't call fclose on the returned FILE; it
486
   will be closed by pex_free.  */
487
 
488
extern FILE *pex_read_output (struct pex_obj *, int binary);
489
 
490
/* Return exit status of all programs in VECTOR.  COUNT indicates the
491
   size of VECTOR.  The status codes in the vector are in the order of
492
   the calls to pex_run.  Returns 0 on error, 1 on success.  */
493
 
494
extern int pex_get_status (struct pex_obj *, int count, int *vector);
495
 
496
/* Return times of all programs in VECTOR.  COUNT indicates the size
497
   of VECTOR.  struct pex_time is really just struct timeval, but that
498
   is not portable to all systems.  Returns 0 on error, 1 on
499
   success.  */
500
 
501
struct pex_time
502
{
503
  unsigned long user_seconds;
504
  unsigned long user_microseconds;
505
  unsigned long system_seconds;
506
  unsigned long system_microseconds;
507
};
508
 
509
extern int pex_get_times (struct pex_obj *, int count,
510
                          struct pex_time *vector);
511
 
512
/* Clean up a pex_obj.  */
513
 
514
extern void pex_free (struct pex_obj *);
515
 
516
/* Just execute one program.  Return value is as for pex_run.
517
   FLAGS        Combination of PEX_SEARCH and PEX_STDERR_TO_STDOUT.
518
   EXECUTABLE   As for pex_run.
519
   ARGV         As for pex_run.
520
   PNAME        As for pex_init.
521
   OUTNAME      As for pex_run when PEX_LAST is set.
522
   ERRNAME      As for pex_run.
523
   STATUS       Set to exit status on success.
524
   ERR          As for pex_run.
525
*/
526
 
527
extern const char *pex_one (int flags, const char *executable,
528
                            char * const *argv, const char *pname,
529
                            const char *outname, const char *errname,
530
                            int *status, int *err);
531
 
532
/* pexecute and pwait are the old pexecute interface, still here for
533
   backward compatibility.  Don't use these for new code.  Instead,
534
   use pex_init/pex_run/pex_get_status/pex_free, or pex_one.  */
535
 
536
/* Definitions used by the pexecute routine.  */
537
 
538
#define PEXECUTE_FIRST   1
539
#define PEXECUTE_LAST    2
540
#define PEXECUTE_ONE     (PEXECUTE_FIRST + PEXECUTE_LAST)
541
#define PEXECUTE_SEARCH  4
542
#define PEXECUTE_VERBOSE 8
543
 
544
/* Execute a program.  */
545
 
546
extern int pexecute (const char *, char * const *, const char *,
547
                     const char *, char **, char **, int);
548
 
549
/* Wait for pexecute to finish.  */
550
 
551
extern int pwait (int, int *, int);
552
 
553
#if !HAVE_DECL_ASPRINTF
554
/* Like sprintf but provides a pointer to malloc'd storage, which must
555
   be freed by the caller.  */
556
 
557
extern int asprintf (char **, const char *, ...) ATTRIBUTE_PRINTF_2;
558
#endif
559
 
560
#if !HAVE_DECL_VASPRINTF
561
/* Like vsprintf but provides a pointer to malloc'd storage, which
562
   must be freed by the caller.  */
563
 
564
extern int vasprintf (char **, const char *, va_list) ATTRIBUTE_PRINTF(2,0);
565
#endif
566
 
567
#if defined(HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
568
/* Like sprintf but prints at most N characters.  */
569
extern int snprintf (char *, size_t, const char *, ...) ATTRIBUTE_PRINTF_3;
570
#endif
571
 
572
#if defined(HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF
573
/* Like vsprintf but prints at most N characters.  */
574
extern int vsnprintf (char *, size_t, const char *, va_list) ATTRIBUTE_PRINTF(3,0);
575
#endif
576
 
577
#if defined(HAVE_DECL_STRVERSCMP) && !HAVE_DECL_STRVERSCMP
578
/* Compare version strings.  */
579
extern int strverscmp (const char *, const char *);
580
#endif
581
 
582
#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
583
 
584
/* Drastically simplified alloca configurator.  If we're using GCC,
585
   we use __builtin_alloca; otherwise we use the C alloca.  The C
586
   alloca is always available.  You can override GCC by defining
587
   USE_C_ALLOCA yourself.  The canonical autoconf macro C_ALLOCA is
588
   also set/unset as it is often used to indicate whether code needs
589
   to call alloca(0).  */
590
extern void *C_alloca (size_t) ATTRIBUTE_MALLOC;
591
#undef alloca
592
#if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA
593
# define alloca(x) __builtin_alloca(x)
594
# undef C_ALLOCA
595
# define ASTRDUP(X) \
596
  (__extension__ ({ const char *const libiberty_optr = (X); \
597
   const unsigned long libiberty_len = strlen (libiberty_optr) + 1; \
598
   char *const libiberty_nptr = (char *const) alloca (libiberty_len); \
599
   (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len); }))
600
#else
601
# define alloca(x) C_alloca(x)
602
# undef USE_C_ALLOCA
603
# define USE_C_ALLOCA 1
604
# undef C_ALLOCA
605
# define C_ALLOCA 1
606
extern const char *libiberty_optr;
607
extern char *libiberty_nptr;
608
extern unsigned long libiberty_len;
609
# define ASTRDUP(X) \
610
  (libiberty_optr = (X), \
611
   libiberty_len = strlen (libiberty_optr) + 1, \
612
   libiberty_nptr = (char *) alloca (libiberty_len), \
613
   (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len))
614
#endif
615
 
616
#ifdef __cplusplus
617
}
618
#endif
619
 
620
 
621
#endif /* ! defined (LIBIBERTY_H) */

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