1 /* 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 /* Write argv to an @-file, inserting necessary quoting. */ 90 91 extern int writeargv PARAMS ((char **, FILE *)); 92 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 *" */ 97 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 #include <libgen.h> 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 113 114 /* A well-defined basename () that is always compiled in. */ 115 116 extern const char *lbasename (const char *); 117 118 /* A well-defined realpath () that is always compiled in. */ 119 120 extern char *lrealpath (const char *); 121 122 /* 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. */ 125 126 extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL; 127 128 /* 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. */ 134 135 extern char *reconcat (char *, const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_SENTINEL; 136 137 /* 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. */ 140 141 extern unsigned long concat_length (const char *, ...) ATTRIBUTE_SENTINEL; 142 143 /* 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. */ 147 148 extern char *concat_copy (char *, const char *, ...) ATTRIBUTE_SENTINEL; 149 150 /* 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. */ 154 155 extern char *concat_copy2 (const char *, ...) ATTRIBUTE_SENTINEL; 156 157 /* This is the global area used by concat_copy2. */ 158 159 extern char *libiberty_concat_ptr; 160 161 /* 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) 168 169 /* Check whether two file descriptors refer to the same file. */ 170 171 extern int fdmatch (int fd1, int fd2); 172 173 /* 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 179 180 /* Get the working directory. The result is cached, so don't call 181 chdir() between calls to getpwd(). */ 182 183 extern char * getpwd (void); 184 185 /* 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 193 194 /* Get the amount of time the process has run, in microseconds. */ 195 196 extern long get_run_time (void); 197 198 /* Generate a relocated path to some installation directory. Allocates 199 return value using malloc. */ 200 201 extern char *make_relative_prefix (const char *, const char *, 202 const char *) ATTRIBUTE_MALLOC; 203 204 /* Generate a relocated path to some installation directory without 205 attempting to follow any soft links. Allocates 206 return value using malloc. */ 207 208 extern char *make_relative_prefix_ignore_links (const char *, const char *, 209 const char *) ATTRIBUTE_MALLOC; 210 211 /* Choose a temporary directory to use for scratch files. */ 212 213 extern char *choose_temp_base (void) ATTRIBUTE_MALLOC; 214 215 /* Return a temporary file name or NULL if unable to create one. */ 216 217 extern char *make_temp_file (const char *) ATTRIBUTE_MALLOC; 218 219 /* Remove a link to a file unless it is special. */ 220 221 extern int unlink_if_ordinary (const char *); 222 223 /* Allocate memory filled with spaces. Allocates using malloc. */ 224 225 extern const char *spaces (int count); 226 227 /* Return the maximum error number for which strerror will return a 228 string. */ 229 230 extern int errno_max (void); 231 232 /* Return the name of an errno value (e.g., strerrno (EINVAL) returns 233 "EINVAL"). */ 234 235 extern const char *strerrno (int); 236 237 /* Given the name of an errno value, return the value. */ 238 239 extern int strtoerrno (const char *); 240 241 /* ANSI's strerror(), but more robust. */ 242 243 extern char *xstrerror (int); 244 245 /* Return the maximum signal number for which strsignal will return a 246 string. */ 247 248 extern int signo_max (void); 249 250 /* 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. */ 254 255 /*extern const char *strsignal (int);*/ 256 257 /* Return the name of a signal number (e.g., strsigno (SIGHUP) returns 258 "SIGHUP"). */ 259 260 extern const char *strsigno (int); 261 262 /* Given the name of a signal, return its number. */ 263 264 extern int strtosigno (const char *); 265 266 /* Register a function to be run by xexit. Returns 0 on success. */ 267 268 extern int xatexit (void (*fn) (void)); 269 270 /* Exit, calling all the functions registered with xatexit. */ 271 272 extern void xexit (int status) ATTRIBUTE_NORETURN; 273 274 /* Set the program name used by xmalloc. */ 275 276 extern void xmalloc_set_program_name (const char *); 277 278 /* Report an allocation failure. */ 279 extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN; 280 281 /* 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. */ 284 285 extern void *xmalloc (size_t) ATTRIBUTE_MALLOC; 286 287 /* 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. */ 290 291 extern void *xrealloc (void *, size_t); 292 293 /* Allocate memory without fail and set it to zero. This works like 294 xmalloc. */ 295 296 extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC; 297 298 /* Copy a string into a memory buffer without fail. */ 299 300 extern char *xstrdup (const char *) ATTRIBUTE_MALLOC; 301 302 /* Copy at most N characters from string into a buffer without fail. */ 303 304 extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC; 305 306 /* Copy an existing memory buffer to a new memory buffer without fail. */ 307 308 extern void *xmemdup (const void *, size_t, size_t) ATTRIBUTE_MALLOC; 309 310 /* Physical memory routines. Return values are in BYTES. */ 311 extern double physmem_total (void); 312 extern double physmem_available (void); 313 314 315 /* 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[]. */ 320 321 /* Scalar allocators. */ 322 323 #define XNEW(T) ((T *) xmalloc (sizeof (T))) 324 #define XCNEW(T) ((T *) xcalloc (1, sizeof (T))) 325 #define XDELETE(P) free ((void*) (P)) 326 327 /* Array allocators. */ 328 329 #define XNEWVEC(T, N) ((T *) xmalloc (sizeof (T) * (N))) 330 #define XCNEWVEC(T, N) ((T *) xcalloc ((N), sizeof (T))) 331 #define XRESIZEVEC(T, P, N) ((T *) xrealloc ((void *) (P), sizeof (T) * (N))) 332 #define XDELETEVEC(P) free ((void*) (P)) 333 334 /* Allocators for variable-sized structures and raw buffers. */ 335 336 #define XNEWVAR(T, S) ((T *) xmalloc ((S))) 337 #define XCNEWVAR(T, S) ((T *) xcalloc (1, (S))) 338 #define XRESIZEVAR(T, P, S) ((T *) xrealloc ((P), (S))) 339 340 /* Type-safe obstack allocator. */ 341 342 #define XOBNEW(O, T) ((T *) obstack_alloc ((O), sizeof (T))) 343 #define XOBFINISH(O, T) ((T) obstack_finish ((O))) 344 345 /* hex character manipulation routines */ 346 347 #define _hex_array_size 256 348 #define _hex_bad 99 349 extern const unsigned char _hex_value[_hex_array_size]; 350 extern void hex_init (void); 351 #define hex_p(c) (hex_value (c) != _hex_bad) 352 /* If you change this, note well: Some code relies on side effects in 353 the argument being performed exactly once. */ 354 #define hex_value(c) ((unsigned int) _hex_value[(unsigned char) (c)]) 355 356 /* Flags for pex_init. These are bits to be or'ed together. */ 357 358 /* Record subprocess times, if possible. */ 359 #define PEX_RECORD_TIMES 0x1 360 361 /* Use pipes for communication between processes, if possible. */ 362 #define PEX_USE_PIPES 0x2 363 364 /* Save files used for communication between processes. */ 365 #define PEX_SAVE_TEMPS 0x4 366 367 /* Prepare to execute one or more programs, with standard output of 368 each program fed to standard input of the next. 369 FLAGS As above. 370 PNAME The name of the program to report in error messages. 371 TEMPBASE A base name to use for temporary files; may be NULL to 372 use a random name. 373 Returns NULL on error. */ 374 375 extern struct pex_obj *pex_init (int flags, const char *pname, 376 const char *tempbase); 377 378 /* Flags for pex_run. These are bits to be or'ed together. */ 379 380 /* Last program in pipeline. Standard output of program goes to 381 OUTNAME, or, if OUTNAME is NULL, to standard output of caller. Do 382 not set this if you want to call pex_read_output. After this is 383 set, pex_run may no longer be called with the same struct 384 pex_obj. */ 385 #define PEX_LAST 0x1 386 387 /* Search for program in executable search path. */ 388 #define PEX_SEARCH 0x2 389 390 /* OUTNAME is a suffix. */ 391 #define PEX_SUFFIX 0x4 392 393 /* Send program's standard error to standard output. */ 394 #define PEX_STDERR_TO_STDOUT 0x8 395 396 /* Input file should be opened in binary mode. This flag is ignored 397 on Unix. */ 398 #define PEX_BINARY_INPUT 0x10 399 400 /* Output file should be opened in binary mode. This flag is ignored 401 on Unix. For proper behaviour PEX_BINARY_INPUT and 402 PEX_BINARY_OUTPUT have to match appropriately--i.e., a call using 403 PEX_BINARY_OUTPUT should be followed by a call using 404 PEX_BINARY_INPUT. */ 405 #define PEX_BINARY_OUTPUT 0x20 406 407 /* Capture stderr to a pipe. The output can be read by 408 calling pex_read_err and reading from the returned 409 FILE object. This flag may be specified only for 410 the last program in a pipeline. 411 412 This flag is supported only on Unix and Windows. */ 413 #define PEX_STDERR_TO_PIPE 0x40 414 415 /* Capture stderr in binary mode. This flag is ignored 416 on Unix. */ 417 #define PEX_BINARY_ERROR 0x80 418 419 420 /* Execute one program. Returns NULL on success. On error returns an 421 error string (typically just the name of a system call); the error 422 string is statically allocated. 423 424 OBJ Returned by pex_init. 425 426 FLAGS As above. 427 428 EXECUTABLE The program to execute. 429 430 ARGV NULL terminated array of arguments to pass to the program. 431 432 OUTNAME Sets the output file name as follows: 433 434 PEX_SUFFIX set (OUTNAME may not be NULL): 435 TEMPBASE parameter to pex_init not NULL: 436 Output file name is the concatenation of TEMPBASE 437 and OUTNAME. 438 TEMPBASE is NULL: 439 Output file name is a random file name ending in 440 OUTNAME. 441 PEX_SUFFIX not set: 442 OUTNAME not NULL: 443 Output file name is OUTNAME. 444 OUTNAME NULL, TEMPBASE not NULL: 445 Output file name is randomly chosen using 446 TEMPBASE. 447 OUTNAME NULL, TEMPBASE NULL: 448 Output file name is randomly chosen. 449 450 If PEX_LAST is not set, the output file name is the 451 name to use for a temporary file holding stdout, if 452 any (there will not be a file if PEX_USE_PIPES is set 453 and the system supports pipes). If a file is used, it 454 will be removed when no longer needed unless 455 PEX_SAVE_TEMPS is set. 456 457 If PEX_LAST is set, and OUTNAME is not NULL, standard 458 output is written to the output file name. The file 459 will not be removed. If PEX_LAST and PEX_SUFFIX are 460 both set, TEMPBASE may not be NULL. 461 462 ERRNAME If not NULL, this is the name of a file to which 463 standard error is written. If NULL, standard error of 464 the program is standard error of the caller. 465 466 ERR On an error return, *ERR is set to an errno value, or 467 to 0 if there is no relevant errno. 468 */ 469 470 extern const char *pex_run (struct pex_obj *obj, int flags, 471 const char *executable, char * const *argv, 472 const char *outname, const char *errname, 473 int *err); 474 475 /* As for pex_run (), but takes an extra parameter to enable the 476 environment for the child process to be specified. 477 478 ENV The environment for the child process, specified as 479 an array of character pointers. Each element of the 480 array should point to a string of the form VAR=VALUE, 481 with the exception of the last element which must be 482 a null pointer. 483 */ 484 485 extern const char *pex_run_in_environment (struct pex_obj *obj, int flags, 486 const char *executable, 487 char * const *argv, 488 char * const *env, 489 const char *outname, 490 const char *errname, int *err); 491 492 /* Return a stream for a temporary file to pass to the first program 493 in the pipeline as input. The file name is chosen as for pex_run. 494 pex_run closes the file automatically; don't close it yourself. */ 495 496 extern FILE *pex_input_file (struct pex_obj *obj, int flags, 497 const char *in_name); 498 499 /* Return a stream for a pipe connected to the standard input of the 500 first program in the pipeline. You must have passed 501 `PEX_USE_PIPES' to `pex_init'. Close the returned stream 502 yourself. */ 503 504 extern FILE *pex_input_pipe (struct pex_obj *obj, int binary); 505 506 /* Read the standard output of the last program to be executed. 507 pex_run can not be called after this. BINARY should be non-zero if 508 the file should be opened in binary mode; this is ignored on Unix. 509 Returns NULL on error. Don't call fclose on the returned FILE; it 510 will be closed by pex_free. */ 511 512 extern FILE *pex_read_output (struct pex_obj *, int binary); 513 514 /* Read the standard error 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. */ 519 520 extern FILE *pex_read_err (struct pex_obj *, int binary); 521 522 /* Return exit status of all programs in VECTOR. COUNT indicates the 523 size of VECTOR. The status codes in the vector are in the order of 524 the calls to pex_run. Returns 0 on error, 1 on success. */ 525 526 extern int pex_get_status (struct pex_obj *, int count, int *vector); 527 528 /* Return times of all programs in VECTOR. COUNT indicates the size 529 of VECTOR. struct pex_time is really just struct timeval, but that 530 is not portable to all systems. Returns 0 on error, 1 on 531 success. */ 532 533 struct pex_time 534 { 535 unsigned long user_seconds; 536 unsigned long user_microseconds; 537 unsigned long system_seconds; 538 unsigned long system_microseconds; 539 }; 540 541 extern int pex_get_times (struct pex_obj *, int count, 542 struct pex_time *vector); 543 544 /* Clean up a pex_obj. */ 545 546 extern void pex_free (struct pex_obj *); 547 548 /* Just execute one program. Return value is as for pex_run. 549 FLAGS Combination of PEX_SEARCH and PEX_STDERR_TO_STDOUT. 550 EXECUTABLE As for pex_run. 551 ARGV As for pex_run. 552 PNAME As for pex_init. 553 OUTNAME As for pex_run when PEX_LAST is set. 554 ERRNAME As for pex_run. 555 STATUS Set to exit status on success. 556 ERR As for pex_run. 557 */ 558 559 extern const char *pex_one (int flags, const char *executable, 560 char * const *argv, const char *pname, 561 const char *outname, const char *errname, 562 int *status, int *err); 563 564 /* pexecute and pwait are the old pexecute interface, still here for 565 backward compatibility. Don't use these for new code. Instead, 566 use pex_init/pex_run/pex_get_status/pex_free, or pex_one. */ 567 568 /* Definitions used by the pexecute routine. */ 569 570 #define PEXECUTE_FIRST 1 571 #define PEXECUTE_LAST 2 572 #define PEXECUTE_ONE (PEXECUTE_FIRST + PEXECUTE_LAST) 573 #define PEXECUTE_SEARCH 4 574 #define PEXECUTE_VERBOSE 8 575 576 /* Execute a program. */ 577 578 extern int pexecute (const char *, char * const *, const char *, 579 const char *, char **, char **, int); 580 581 /* Wait for pexecute to finish. */ 582 583 extern int pwait (int, int *, int); 584 585 #if !HAVE_DECL_ASPRINTF 586 /* Like sprintf but provides a pointer to malloc'd storage, which must 587 be freed by the caller. */ 588 589 extern int asprintf (char **, const char *, ...) ATTRIBUTE_PRINTF_2; 590 #endif 591 592 #if !HAVE_DECL_VASPRINTF 593 /* Like vsprintf but provides a pointer to malloc'd storage, which 594 must be freed by the caller. */ 595 596 extern int vasprintf (char **, const char *, va_list) ATTRIBUTE_PRINTF(2,0); 597 #endif 598 599 #if defined(HAVE_DECL_SNPRINTF) && !HAVE_DECL_SNPRINTF 600 /* Like sprintf but prints at most N characters. */ 601 extern int snprintf (char *, size_t, const char *, ...) ATTRIBUTE_PRINTF_3; 602 #endif 603 604 #if defined(HAVE_DECL_VSNPRINTF) && !HAVE_DECL_VSNPRINTF 605 /* Like vsprintf but prints at most N characters. */ 606 extern int vsnprintf (char *, size_t, const char *, va_list) ATTRIBUTE_PRINTF(3,0); 607 #endif 608 609 #if defined(HAVE_DECL_STRVERSCMP) && !HAVE_DECL_STRVERSCMP 610 /* Compare version strings. */ 611 extern int strverscmp (const char *, const char *); 612 #endif 613 614 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) 615 616 /* Drastically simplified alloca configurator. If we're using GCC, 617 we use __builtin_alloca; otherwise we use the C alloca. The C 618 alloca is always available. You can override GCC by defining 619 USE_C_ALLOCA yourself. The canonical autoconf macro C_ALLOCA is 620 also set/unset as it is often used to indicate whether code needs 621 to call alloca(0). */ 622 extern void *C_alloca (size_t) ATTRIBUTE_MALLOC; 623 #undef alloca 624 #if GCC_VERSION >= 2000 && !defined USE_C_ALLOCA 625 # define alloca(x) __builtin_alloca(x) 626 # undef C_ALLOCA 627 # define ASTRDUP(X) \ 628 (__extension__ ({ const char *const libiberty_optr = (X); \ 629 const unsigned long libiberty_len = strlen (libiberty_optr) + 1; \ 630 char *const libiberty_nptr = (char *const) alloca (libiberty_len); \ 631 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len); })) 632 #else 633 # define alloca(x) C_alloca(x) 634 # undef USE_C_ALLOCA 635 # define USE_C_ALLOCA 1 636 # undef C_ALLOCA 637 # define C_ALLOCA 1 638 extern const char *libiberty_optr; 639 extern char *libiberty_nptr; 640 extern unsigned long libiberty_len; 641 # define ASTRDUP(X) \ 642 (libiberty_optr = (X), \ 643 libiberty_len = strlen (libiberty_optr) + 1, \ 644 libiberty_nptr = (char *) alloca (libiberty_len), \ 645 (char *) memcpy (libiberty_nptr, libiberty_optr, libiberty_len)) 646 #endif 647 648 #ifdef __cplusplus 649 } 650 #endif 651 652 653 #endif /* ! defined (LIBIBERTY_H) */ 654