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[binutils.git] / include / libiberty.h
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1 /* Function declarations for libiberty.
3 Copyright 2001, 2002, 2005, 2007 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)
15 any later version.
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. */
35 #ifndef LIBIBERTY_H
36 #define LIBIBERTY_H
38 #ifdef __cplusplus
39 extern "C" {
40 #endif
42 #include "ansidecl.h"
44 /* Get a definition for size_t. */
45 #include <stddef.h>
46 /* Get a definition for va_list. */
47 #include <stdarg.h>
49 #include <stdio.h>
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 **) ATTRIBUTE_MALLOC;
85 /* Expand "@file" arguments in argv. */
87 extern void expandargv PARAMS ((int *, char ***));
89 /* Write argv to an @-file, inserting necessary quoting. */
91 extern int writeargv PARAMS ((char **, FILE *));
93 /* Return the last component of a path name. Note that we can't use a
94 prototype here because the parameter is declared inconsistently
95 across different systems, sometimes as "char *" and sometimes as
96 "const char *" */
98 /* HAVE_DECL_* is a three-state macro: undefined, 0 or 1. If it is
99 undefined, we haven't run the autoconf check so provide the
100 declaration without arguments. If it is 0, we checked and failed
101 to find the declaration so provide a fully prototyped one. If it
102 is 1, we found it so don't provide any declaration at all. */
103 #if !HAVE_DECL_BASENAME
104 #if defined (__GNU_LIBRARY__ ) || defined (__linux__) || defined (__FreeBSD__) || defined (__OpenBSD__) || defined(__NetBSD__) || defined (__CYGWIN__) || defined (__CYGWIN32__) || defined (__MINGW32__) || defined (HAVE_DECL_BASENAME)
105 extern char *basename (const char *);
106 #else
107 /* Do not allow basename to be used if there is no prototype seen. We
108 either need to use the above prototype or have one from
109 autoconf which would result in HAVE_DECL_BASENAME being set. */
110 #define basename basename_cannot_be_used_without_a_prototype
111 #endif
112 #endif
114 /* A well-defined basename () that is always compiled in. */
116 extern const char *lbasename (const char *);
118 /* A well-defined realpath () that is always compiled in. */
120 extern char *lrealpath (const char *);
122 /* Concatenate an arbitrary number of strings. You must pass NULL as
123 the last argument of this function, to terminate the list of
124 strings. Allocates memory using xmalloc. */
126 extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL;
128 /* Concatenate an arbitrary number of strings. You must pass NULL as
129 the last argument of this function, to terminate the list of
130 strings. Allocates memory using xmalloc. The first argument is
131 not one of the strings to be concatenated, but if not NULL is a
132 pointer to be freed after the new string is created, similar to the
133 way xrealloc works. */
135 extern char *reconcat (char *, const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL;
137 /* Determine the length of concatenating an arbitrary number of
138 strings. You must pass NULL as the last argument of this function,
139 to terminate the list of strings. */
141 extern unsigned long concat_length (const char *, ...) ATTRIBUTE_SENTINEL;
143 /* Concatenate an arbitrary number of strings into a SUPPLIED area of
144 memory. You must pass NULL as the last argument of this function,
145 to terminate the list of strings. The supplied memory is assumed
146 to be large enough. */
148 extern char *concat_copy (char *, const char *, ...) ATTRIBUTE_SENTINEL;
150 /* Concatenate an arbitrary number of strings into a GLOBAL area of
151 memory. You must pass NULL as the last argument of this function,
152 to terminate the list of strings. The supplied memory is assumed
153 to be large enough. */
155 extern char *concat_copy2 (const char *, ...) ATTRIBUTE_SENTINEL;
157 /* This is the global area used by concat_copy2. */
159 extern char *libiberty_concat_ptr;
161 /* Concatenate an arbitrary number of strings. You must pass NULL as
162 the last argument of this function, to terminate the list of
163 strings. Allocates memory using alloca. The arguments are
164 evaluated twice! */
165 #define ACONCAT(ACONCAT_PARAMS) \
166 (libiberty_concat_ptr = (char *) alloca (concat_length ACONCAT_PARAMS + 1), \
167 concat_copy2 ACONCAT_PARAMS)
169 /* Check whether two file descriptors refer to the same file. */
171 extern int fdmatch (int fd1, int fd2);
173 /* Return the position of the first bit set in the argument. */
174 /* Prototypes vary from system to system, so we only provide a
175 prototype on systems where we know that we need it. */
176 #if defined (HAVE_DECL_FFS) && !HAVE_DECL_FFS
177 extern int ffs(int);
178 #endif
180 /* Get the working directory. The result is cached, so don't call
181 chdir() between calls to getpwd(). */
183 extern char * getpwd (void);
185 /* Get the current time. */
186 /* Prototypes vary from system to system, so we only provide a
187 prototype on systems where we know that we need it. */
188 #ifdef __MINGW32__
189 /* Forward declaration to avoid #include <sys/time.h>. */
190 struct timeval;
191 extern int gettimeofday (struct timeval *, void *);
192 #endif
194 /* Get the amount of time the process has run, in microseconds. */
196 extern long get_run_time (void);
198 /* Generate a relocated path to some installation directory. Allocates
199 return value using malloc. */
201 extern char *make_relative_prefix (const char *, const char *,
202 const char *) ATTRIBUTE_MALLOC;
204 /* Generate a relocated path to some installation directory without
205 attempting to follow any soft links. Allocates
206 return value using malloc. */
208 extern char *make_relative_prefix_ignore_links (const char *, const char *,
209 const char *) ATTRIBUTE_MALLOC;
211 /* Choose a temporary directory to use for scratch files. */
213 extern char *choose_temp_base (void) ATTRIBUTE_MALLOC;
215 /* Return a temporary file name or NULL if unable to create one. */
217 extern char *make_temp_file (const char *) ATTRIBUTE_MALLOC;
219 /* Remove a link to a file unless it is special. */
221 extern int unlink_if_ordinary (const char *);
223 /* Allocate memory filled with spaces. Allocates using malloc. */
225 extern const char *spaces (int count);
227 /* Return the maximum error number for which strerror will return a
228 string. */
230 extern int errno_max (void);
232 /* Return the name of an errno value (e.g., strerrno (EINVAL) returns
233 "EINVAL"). */
235 extern const char *strerrno (int);
237 /* Given the name of an errno value, return the value. */
239 extern int strtoerrno (const char *);
241 /* ANSI's strerror(), but more robust. */
243 extern char *xstrerror (int);
245 /* Return the maximum signal number for which strsignal will return a
246 string. */
248 extern int signo_max (void);
250 /* Return a signal message string for a signal number
251 (e.g., strsignal (SIGHUP) returns something like "Hangup"). */
252 /* This is commented out as it can conflict with one in system headers.
253 We still document its existence though. */
255 /*extern const char *strsignal (int);*/
257 /* Return the name of a signal number (e.g., strsigno (SIGHUP) returns
258 "SIGHUP"). */
260 extern const char *strsigno (int);
262 /* Given the name of a signal, return its number. */
264 extern int strtosigno (const char *);
266 /* Register a function to be run by xexit. Returns 0 on success. */
268 extern int xatexit (void (*fn) (void));
270 /* Exit, calling all the functions registered with xatexit. */
272 extern void xexit (int status) ATTRIBUTE_NORETURN;
274 /* Set the program name used by xmalloc. */
276 extern void xmalloc_set_program_name (const char *);
278 /* Report an allocation failure. */
279 extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN;
281 /* Allocate memory without fail. If malloc fails, this will print a
282 message to stderr (using the name set by xmalloc_set_program_name,
283 if any) and then call xexit. */
285 extern void *xmalloc (size_t) ATTRIBUTE_MALLOC;
287 /* Reallocate memory without fail. This works like xmalloc. Note,
288 realloc type functions are not suitable for attribute malloc since
289 they may return the same address across multiple calls. */
291 extern void *xrealloc (void *, size_t);
293 /* Allocate memory without fail and set it to zero. This works like
294 xmalloc. */
296 extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC;
298 /* Copy a string into a memory buffer without fail. */
300 extern char *xstrdup (const char *) ATTRIBUTE_MALLOC;
302 /* Copy at most N characters from string into a buffer without fail. */
304 extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC;
306 /* Copy an existing memory buffer to a new memory buffer without fail. */
308 extern void *xmemdup (const void *, size_t, size_t) ATTRIBUTE_MALLOC;
310 /* Physical memory routines. Return values are in BYTES. */
311 extern double physmem_total (void);
312 extern double physmem_available (void);
315 /* These macros provide a K&R/C89/C++-friendly way of allocating structures
316 with nice encapsulation. The XDELETE*() macros are technically
317 superfluous, but provided here for symmetry. Using them consistently
318 makes it easier to update client code to use different allocators such
319 as new/delete and new[]/delete[]. */
321 /* Scalar allocators. */
323 #define XALLOCA(T) ((T *) alloca (sizeof (T)))
324 #define XNEW(T) ((T *) xmalloc (sizeof (T)))
325 #define XCNEW(T) ((T *) xcalloc (1, sizeof (T)))
326 #define XDUP(T, P) ((T *) xmemdup ((P), sizeof (T), sizeof (T)))
327 #define XDELETE(P) free ((void*) (P))
329 /* Array allocators. */
331 #define XALLOCAVEC(T, N) ((T *) alloca (sizeof (T) * (N)))
332 #define XNEWVEC(T, N) ((T *) xmalloc (sizeof (T) * (N)))
333 #define XCNEWVEC(T, N) ((T *) xcalloc ((N), sizeof (T)))
334 #define XDUPVEC(T, P, N) ((T *) xmemdup ((P), sizeof (T) * (N), sizeof (T) * (N)))
335 #define XRESIZEVEC(T, P, N) ((T *) xrealloc ((void *) (P), sizeof (T) * (N)))
336 #define XDELETEVEC(P) free ((void*) (P))
338 /* Allocators for variable-sized structures and raw buffers. */
340 #define XALLOCAVAR(T, S) ((T *) alloca ((S)))
341 #define XNEWVAR(T, S) ((T *) xmalloc ((S)))
342 #define XCNEWVAR(T, S) ((T *) xcalloc (1, (S)))
343 #define XDUPVAR(T, P, S1, S2) ((T *) xmemdup ((P), (S1), (S2)))
344 #define XRESIZEVAR(T, P, S) ((T *) xrealloc ((P), (S)))
346 /* Type-safe obstack allocator. */
348 #define XOBNEW(O, T) ((T *) obstack_alloc ((O), sizeof (T)))
349 #define XOBNEWVEC(O, T, N) ((T *) obstack_alloc ((O), sizeof (T) * (N)))
350 #define XOBNEWVAR(O, T, S) ((T *) obstack_alloc ((O), (S)))
351 #define XOBFINISH(O, T) ((T) obstack_finish ((O)))
353 /* hex character manipulation routines */
355 #define _hex_array_size 256
356 #define _hex_bad 99
357 extern const unsigned char _hex_value[_hex_array_size];
358 extern void hex_init (void);
359 #define hex_p(c) (hex_value (c) != _hex_bad)
360 /* If you change this, note well: Some code relies on side effects in
361 the argument being performed exactly once. */
362 #define hex_value(c) ((unsigned int) _hex_value[(unsigned char) (c)])
364 /* Flags for pex_init. These are bits to be or'ed together. */
366 /* Record subprocess times, if possible. */
367 #define PEX_RECORD_TIMES 0x1
369 /* Use pipes for communication between processes, if possible. */
370 #define PEX_USE_PIPES 0x2
372 /* Save files used for communication between processes. */
373 #define PEX_SAVE_TEMPS 0x4
375 /* Prepare to execute one or more programs, with standard output of
376 each program fed to standard input of the next.
377 FLAGS As above.
378 PNAME The name of the program to report in error messages.
379 TEMPBASE A base name to use for temporary files; may be NULL to
380 use a random name.
381 Returns NULL on error. */
383 extern struct pex_obj *pex_init (int flags, const char *pname,
384 const char *tempbase);
386 /* Flags for pex_run. These are bits to be or'ed together. */
388 /* Last program in pipeline. Standard output of program goes to
389 OUTNAME, or, if OUTNAME is NULL, to standard output of caller. Do
390 not set this if you want to call pex_read_output. After this is
391 set, pex_run may no longer be called with the same struct
392 pex_obj. */
393 #define PEX_LAST 0x1
395 /* Search for program in executable search path. */
396 #define PEX_SEARCH 0x2
398 /* OUTNAME is a suffix. */
399 #define PEX_SUFFIX 0x4
401 /* Send program's standard error to standard output. */
402 #define PEX_STDERR_TO_STDOUT 0x8
404 /* Input file should be opened in binary mode. This flag is ignored
405 on Unix. */
406 #define PEX_BINARY_INPUT 0x10
408 /* Output file should be opened in binary mode. This flag is ignored
409 on Unix. For proper behaviour PEX_BINARY_INPUT and
410 PEX_BINARY_OUTPUT have to match appropriately--i.e., a call using
411 PEX_BINARY_OUTPUT should be followed by a call using
412 PEX_BINARY_INPUT. */
413 #define PEX_BINARY_OUTPUT 0x20
415 /* Capture stderr to a pipe. The output can be read by
416 calling pex_read_err and reading from the returned
417 FILE object. This flag may be specified only for
418 the last program in a pipeline.
420 This flag is supported only on Unix and Windows. */
421 #define PEX_STDERR_TO_PIPE 0x40
423 /* Capture stderr in binary mode. This flag is ignored
424 on Unix. */
425 #define PEX_BINARY_ERROR 0x80
428 /* Execute one program. Returns NULL on success. On error returns an
429 error string (typically just the name of a system call); the error
430 string is statically allocated.
432 OBJ Returned by pex_init.
434 FLAGS As above.
436 EXECUTABLE The program to execute.
438 ARGV NULL terminated array of arguments to pass to the program.
440 OUTNAME Sets the output file name as follows:
442 PEX_SUFFIX set (OUTNAME may not be NULL):
443 TEMPBASE parameter to pex_init not NULL:
444 Output file name is the concatenation of TEMPBASE
445 and OUTNAME.
446 TEMPBASE is NULL:
447 Output file name is a random file name ending in
448 OUTNAME.
449 PEX_SUFFIX not set:
450 OUTNAME not NULL:
451 Output file name is OUTNAME.
452 OUTNAME NULL, TEMPBASE not NULL:
453 Output file name is randomly chosen using
454 TEMPBASE.
455 OUTNAME NULL, TEMPBASE NULL:
456 Output file name is randomly chosen.
458 If PEX_LAST is not set, the output file name is the
459 name to use for a temporary file holding stdout, if
460 any (there will not be a file if PEX_USE_PIPES is set
461 and the system supports pipes). If a file is used, it
462 will be removed when no longer needed unless
463 PEX_SAVE_TEMPS is set.
465 If PEX_LAST is set, and OUTNAME is not NULL, standard
466 output is written to the output file name. The file
467 will not be removed. If PEX_LAST and PEX_SUFFIX are
468 both set, TEMPBASE may not be NULL.
470 ERRNAME If not NULL, this is the name of a file to which
471 standard error is written. If NULL, standard error of
472 the program is standard error of the caller.
474 ERR On an error return, *ERR is set to an errno value, or
475 to 0 if there is no relevant errno.
478 extern const char *pex_run (struct pex_obj *obj, int flags,
479 const char *executable, char * const *argv,
480 const char *outname, const char *errname,
481 int *err);
483 /* As for pex_run (), but takes an extra parameter to enable the
484 environment for the child process to be specified.
486 ENV The environment for the child process, specified as
487 an array of character pointers. Each element of the
488 array should point to a string of the form VAR=VALUE,
489 with the exception of the last element which must be
490 a null pointer.
493 extern const char *pex_run_in_environment (struct pex_obj *obj, int flags,
494 const char *executable,
495 char * const *argv,
496 char * const *env,
497 const char *outname,
498 const char *errname, int *err);
500 /* Return a stream for a temporary file to pass to the first program
501 in the pipeline as input. The file name is chosen as for pex_run.
502 pex_run closes the file automatically; don't close it yourself. */
504 extern FILE *pex_input_file (struct pex_obj *obj, int flags,
505 const char *in_name);
507 /* Return a stream for a pipe connected to the standard input of the
508 first program in the pipeline. You must have passed
509 `PEX_USE_PIPES' to `pex_init'. Close the returned stream
510 yourself. */
512 extern FILE *pex_input_pipe (struct pex_obj *obj, int binary);
514 /* Read the standard output of the last program to be executed.
515 pex_run can not be called after this. BINARY should be non-zero if
516 the file should be opened in binary mode; this is ignored on Unix.
517 Returns NULL on error. Don't call fclose on the returned FILE; it
518 will be closed by pex_free. */
520 extern FILE *pex_read_output (struct pex_obj *, int binary);
522 /* Read the standard error of the last program to be executed.
523 pex_run can not be called after this. BINARY should be non-zero if
524 the file should be opened in binary mode; this is ignored on Unix.
525 Returns NULL on error. Don't call fclose on the returned FILE; it
526 will be closed by pex_free. */
528 extern FILE *pex_read_err (struct pex_obj *, int binary);
530 /* Return exit status of all programs in VECTOR. COUNT indicates the
531 size of VECTOR. The status codes in the vector are in the order of
532 the calls to pex_run. Returns 0 on error, 1 on success. */
534 extern int pex_get_status (struct pex_obj *, int count, int *vector);
536 /* Return times of all programs in VECTOR. COUNT indicates the size
537 of VECTOR. struct pex_time is really just struct timeval, but that
538 is not portable to all systems. Returns 0 on error, 1 on
539 success. */
541 struct pex_time
543 unsigned long user_seconds;
544 unsigned long user_microseconds;
545 unsigned long system_seconds;
546 unsigned long system_microseconds;
549 extern int pex_get_times (struct pex_obj *, int count,
550 struct pex_time *vector);
552 /* Clean up a pex_obj. If you have not called pex_get_times or
553 pex_get_status, this will try to kill the subprocesses. */
555 extern void pex_free (struct pex_obj *);
557 /* Just execute one program. Return value is as for pex_run.
558 FLAGS Combination of PEX_SEARCH and PEX_STDERR_TO_STDOUT.
559 EXECUTABLE As for pex_run.
560 ARGV As for pex_run.
561 PNAME As for pex_init.
562 OUTNAME As for pex_run when PEX_LAST is set.
563 ERRNAME As for pex_run.
564 STATUS Set to exit status on success.
565 ERR As for pex_run.
568 extern const char *pex_one (int flags, const char *executable,
569 char * const *argv, const char *pname,
570 const char *outname, const char *errname,
571 int *status, int *err);
573 /* pexecute and pwait are the old pexecute interface, still here for
574 backward compatibility. Don't use these for new code. Instead,
575 use pex_init/pex_run/pex_get_status/pex_free, or pex_one. */
577 /* Definitions used by the pexecute routine. */
579 #define PEXECUTE_FIRST 1
580 #define PEXECUTE_LAST 2
581 #define PEXECUTE_ONE (PEXECUTE_FIRST + PEXECUTE_LAST)
582 #define PEXECUTE_SEARCH 4
583 #define PEXECUTE_VERBOSE 8
585 /* Execute a program. */
587 extern int pexecute (const char *, char * const *, const char *,
588 const char *, char **, char **, int);
590 /* Wait for pexecute to finish. */
592 extern int pwait (int, int *, int);
594 #if !HAVE_DECL_ASPRINTF
595 /* Like sprintf but provides a pointer to malloc'd storage, which must
596 be freed by the caller. */
598 extern int asprintf (char **, const char *, ...) ATTRIBUTE_PRINTF_2;
599 #endif
601 #if !HAVE_DECL_VASPRINTF
602 /* Like vsprintf but provides a pointer to malloc'd storage, which
603 must be freed by the caller. */
605 extern int vasprintf (char **, const char *, va_list) ATTRIBUTE_PRINTF(2,0);
606 #endif
608 #if defined(HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF
609 /* Like sprintf but prints at most N characters. */
610 extern int snprintf (char *, size_t, const char *, ...) ATTRIBUTE_PRINTF_3;
611 #endif
613 #if defined(HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF
614 /* Like vsprintf but prints at most N characters. */
615 extern int vsnprintf (char *, size_t, const char *, va_list) ATTRIBUTE_PRINTF(3,0);
616 #endif
618 #if defined(HAVE_DECL_STRVERSCMP) && !HAVE_DECL_STRVERSCMP
619 /* Compare version strings. */
620 extern int strverscmp (const char *, const char *);
621 #endif
623 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
625 /* Drastically simplified alloca configurator. If we're using GCC,
626 we use __builtin_alloca; otherwise we use the C alloca. The C
627 alloca is always available. You can override GCC by defining
628 USE_C_ALLOCA yourself. The canonical autoconf macro C_ALLOCA is
629 also set/unset as it is often used to indicate whether code needs
630 to call alloca(0). */
631 extern void *C_alloca (size_t) ATTRIBUTE_MALLOC;
632 #undef alloca
633 #if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA
634 # define alloca(x) __builtin_alloca(x)
635 # undef C_ALLOCA
636 # define ASTRDUP(X) \
637 (__extension__ ({ const char *const libiberty_optr = (X); \
638 const unsigned long libiberty_len = strlen (libiberty_optr) + 1; \
639 char *const libiberty_nptr = (char *const) alloca (libiberty_len); \
640 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len); }))
641 #else
642 # define alloca(x) C_alloca(x)
643 # undef USE_C_ALLOCA
644 # define USE_C_ALLOCA 1
645 # undef C_ALLOCA
646 # define C_ALLOCA 1
647 extern const char *libiberty_optr;
648 extern char *libiberty_nptr;
649 extern unsigned long libiberty_len;
650 # define ASTRDUP(X) \
651 (libiberty_optr = (X), \
652 libiberty_len = strlen (libiberty_optr) + 1, \
653 libiberty_nptr = (char *) alloca (libiberty_len), \
654 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len))
655 #endif
657 #ifdef __cplusplus
659 #endif
662 #endif /* ! defined (LIBIBERTY_H) */