/* Function declarations for libiberty.    Copyright (C) 1997-2026 Free Software Foundation, Inc.    Note - certain prototypes declared in this header file are for   functions whoes implementation copyright does not belong to the   FSF.  Those prototypes are present in this file for reference   purposes only and their presence in this file should not construed   as an indication of ownership by the FSF of the implementation of   those functions in any way or form whatsoever.    This program is free software; you can redistribute it and/or modify   it under the terms of the GNU General Public License as published by   the Free Software Foundation; either version 2, or (at your option)   any later version.    This program is distributed in the hope that it will be useful,   but WITHOUT ANY WARRANTY; without even the implied warranty of   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   GNU General Public License for more details.    You should have received a copy of the GNU General Public License   along with this program; if not, write to the Free Software   Foundation, Inc., 51 Franklin Street - Fifth Floor,   Boston, MA 02110-1301, USA.    Written by Cygnus Support, 1994.    The libiberty library provides a number of functions which are   missing on some operating systems.  We do not declare those here,   to avoid conflicts with the system header files on operating   systems that do support those functions.  In this file we only   declare those functions which are specific to libiberty.  */ #ifndef LIBIBERTY_H#define LIBIBERTY_H #ifdef __cplusplusextern "C" {#endif #include "ansidecl.h" /* Get a definition for size_t.  */#include <stddef.h>/* Get a definition for va_list.  */#include <stdarg.h> #include <stdio.h> /* If the OS supports it, ensure that the supplied stream is setup to   avoid any multi-threaded locking.  Otherwise leave the FILE pointer   unchanged.  If the stream is NULL do nothing.  */ extern void unlock_stream (FILE *); /* If the OS supports it, ensure that the standard I/O streams, stdin,   stdout and stderr are setup to avoid any multi-threaded locking.   Otherwise do nothing.  */ extern void unlock_std_streams (void); /* Open and return a FILE pointer.  If the OS supports it, ensure that   the stream is setup to avoid any multi-threaded locking.  Otherwise   return the FILE pointer unchanged.  */ extern FILE *fopen_unlocked (const char *, const char *);extern FILE *fdopen_unlocked (int, const char *);extern FILE *freopen_unlocked (const char *, const char *, FILE *); /* Build an argument vector from a string.  Allocates memory using   malloc.  Use freeargv to free the vector.  */ extern char **buildargv (const char *) ATTRIBUTE_MALLOC; /* Free a vector returned by buildargv.  */ extern void freeargv (char **); /* Duplicate an argument vector. Allocates memory using malloc.  Use   freeargv to free the vector.  */ extern char **dupargv (char * const *) ATTRIBUTE_MALLOC; /* Expand "@file" arguments in argv.  */ extern void expandargv (int *, char ***); /* Write argv to an @-file, inserting necessary quoting.  */ extern int writeargv (char * const *, FILE *); /* Return the number of elements in argv.  */ extern int countargv (char * const *); /* Return the last component of a path name.  Note that we can't use a   prototype here because the parameter is declared inconsistently   across different systems, sometimes as "char *" and sometimes as   "const char *" */ /* HAVE_DECL_* is a three-state macro: undefined, 0 or 1.  If it is   undefined, we haven't run the autoconf check so provide the   declaration without arguments.  If it is 0, we checked and failed   to find the declaration so provide a fully prototyped one.  If it   is 1, we found it so don't provide any declaration at all.  */#if !HAVE_DECL_BASENAME#if defined (__GNU_LIBRARY__ ) || defined (__linux__) \ || defined (__FreeBSD__) || defined (__OpenBSD__) || defined (__NetBSD__) \ || defined (__CYGWIN__) || defined (__CYGWIN32__) || defined (__MINGW32__) \ || defined (__DragonFly__) || defined (HAVE_DECL_BASENAME)extern char *basename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1);#else/* Do not allow basename to be used if there is no prototype seen.  We   either need to use the above prototype or have one from   autoconf which would result in HAVE_DECL_BASENAME being set.  */#define basename basename_cannot_be_used_without_a_prototype#endif#endif /* A well-defined basename () that is always compiled in.  */ extern const char *lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1); /* Same, but assumes DOS semantics (drive name, backslash is also a   dir separator) regardless of host.  */ extern const char *dos_lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1); /* Same, but assumes Unix semantics (absolute paths always start with   a slash, only forward slash is accepted as dir separator)   regardless of host.  */ extern const char *unix_lbasename (const char *) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1); /* A dirname () that is always compiled in.  */ extern char *ldirname (const char *) ATTRIBUTE_NONNULL(1); /* Same, but assumes DOS semantics regardless of host.  */ extern char *dos_ldirname (const char *) ATTRIBUTE_NONNULL(1); /* Same, but assumes Unix semantics regardless of host.  */ extern char *unix_ldirname (const char *) ATTRIBUTE_NONNULL(1); /* A well-defined realpath () that is always compiled in.  */ extern char *lrealpath (const char *); /* Return true when FD file descriptor exists.  */ extern int is_valid_fd (int fd); /* Concatenate an arbitrary number of strings.  You must pass NULL as   the last argument of this function, to terminate the list of   strings.  Allocates memory using xmalloc.  */ extern char *concat (const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL; /* Concatenate an arbitrary number of strings.  You must pass NULL as   the last argument of this function, to terminate the list of   strings.  Allocates memory using xmalloc.  The first argument is   not one of the strings to be concatenated, but if not NULL is a   pointer to be freed after the new string is created, similar to the   way xrealloc works.  */ extern char *reconcat (char *, const char *, ...) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL; /* Determine the length of concatenating an arbitrary number of   strings.  You must pass NULL as the last argument of this function,   to terminate the list of strings.  */ extern unsigned long concat_length (const char *, ...) ATTRIBUTE_SENTINEL; /* Concatenate an arbitrary number of strings into a SUPPLIED area of   memory.  You must pass NULL as the last argument of this function,   to terminate the list of strings.  The supplied memory is assumed   to be large enough.  */ extern char *concat_copy (char *, const char *, ...) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_NONNULL(1) ATTRIBUTE_SENTINEL; /* Concatenate an arbitrary number of strings into a GLOBAL area of   memory.  You must pass NULL as the last argument of this function,   to terminate the list of strings.  The supplied memory is assumed   to be large enough.  */ extern char *concat_copy2 (const char *, ...) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_SENTINEL; /* This is the global area used by concat_copy2.  */ extern char *libiberty_concat_ptr; /* Concatenate an arbitrary number of strings.  You must pass NULL as   the last argument of this function, to terminate the list of   strings.  Allocates memory using alloca.  The arguments are   evaluated twice!  */#define ACONCAT(ACONCAT_PARAMS) \  (libiberty_concat_ptr = (char *) alloca (concat_length ACONCAT_PARAMS + 1), \   concat_copy2 ACONCAT_PARAMS) /* Check whether two file descriptors refer to the same file.  */ extern int fdmatch (int fd1, int fd2); /* Return the position of the first bit set in the argument.  *//* Prototypes vary from system to system, so we only provide a   prototype on systems where we know that we need it.  */#if defined (HAVE_DECL_FFS) && !HAVE_DECL_FFSextern int ffs(int);#endif #if defined (HAVE_DECL_MKSTEMPS) && !HAVE_DECL_MKSTEMPSextern int mkstemps(char *, int);#endif /* Make memrchr available on systems that do not have it.  */#if !defined (__GNU_LIBRARY__ ) && !defined (__linux__) && \    !defined (HAVE_MEMRCHR)extern void *memrchr(const void *, int, size_t);#endif /* Get the working directory.  The result is cached, so don't call   chdir() between calls to getpwd().  */ extern char * getpwd (void); /* Get the current time.  *//* Prototypes vary from system to system, so we only provide a   prototype on systems where we know that we need it.  */#ifdef __MINGW32__/* Forward declaration to avoid #include <sys/time.h>.   */struct timeval;extern int gettimeofday (struct timeval *, void *);#endif /* Get the amount of time the process has run, in microseconds.  */ extern long get_run_time (void); /* Generate a relocated path to some installation directory.  Allocates   return value using malloc.  */ extern char *make_relative_prefix (const char *, const char *,                                   const char *) ATTRIBUTE_MALLOC; /* Generate a relocated path to some installation directory without   attempting to follow any soft links.  Allocates   return value using malloc.  */ extern char *make_relative_prefix_ignore_links (const char *, const char *,						const char *) ATTRIBUTE_MALLOC; /* Returns a pointer to a directory path suitable for creating temporary   files in.  */ extern const char *choose_tmpdir (void) ATTRIBUTE_RETURNS_NONNULL; /* Choose a temporary directory to use for scratch files.  */ extern char *choose_temp_base (void) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL; /* Return a temporary file name or NULL if unable to create one.  */ extern char *make_temp_file (const char *) ATTRIBUTE_MALLOC; /* Return a temporary file name with given PREFIX and SUFFIX   or NULL if unable to create one.  */ extern char *make_temp_file_with_prefix (const char *, const char *) ATTRIBUTE_MALLOC; /* Remove a link to a file unless it is special. */ extern int unlink_if_ordinary (const char *); /* Allocate memory filled with spaces.  Allocates using malloc.  */ extern const char *spaces (int count); /* Return the maximum error number for which strerror will return a   string.  */ extern int errno_max (void); /* Return the name of an errno value (e.g., strerrno (EINVAL) returns   "EINVAL").  */ extern const char *strerrno (int); /* Given the name of an errno value, return the value.  */ extern int strtoerrno (const char *); /* ANSI's strerror(), but more robust.  */ extern char *xstrerror (int) ATTRIBUTE_RETURNS_NONNULL; /* Return the maximum signal number for which strsignal will return a   string.  */ extern int signo_max (void); /* Return a signal message string for a signal number   (e.g., strsignal (SIGHUP) returns something like "Hangup").  *//* This is commented out as it can conflict with one in system headers.   We still document its existence though.  */ /*extern const char *strsignal (int);*/ /* Return the name of a signal number (e.g., strsigno (SIGHUP) returns   "SIGHUP").  */ extern const char *strsigno (int); /* Given the name of a signal, return its number.  */ extern int strtosigno (const char *); /* Register a function to be run by xexit.  Returns 0 on success.  */ extern int xatexit (void (*fn) (void)); /* Exit, calling all the functions registered with xatexit.  */ extern void xexit (int status) ATTRIBUTE_NORETURN; /* Set the program name used by xmalloc.  */ extern void xmalloc_set_program_name (const char *); /* Report an allocation failure.  */extern void xmalloc_failed (size_t) ATTRIBUTE_NORETURN; /* Allocate memory without fail.  If malloc fails, this will print a   message to stderr (using the name set by xmalloc_set_program_name,   if any) and then call xexit.  */ extern void *xmalloc (size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_RESULT_SIZE_1 ATTRIBUTE_WARN_UNUSED_RESULT; /* Reallocate memory without fail.  This works like xmalloc.  Note,   realloc type functions are not suitable for attribute malloc since   they may return the same address across multiple calls. */ extern void *xrealloc (void *, size_t) ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_RESULT_SIZE_2 ATTRIBUTE_WARN_UNUSED_RESULT; /* Allocate memory without fail and set it to zero.  This works like   xmalloc.  */ extern void *xcalloc (size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_RESULT_SIZE_1_2 ATTRIBUTE_WARN_UNUSED_RESULT; /* Copy a string into a memory buffer without fail.  */ extern char *xstrdup (const char *) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_WARN_UNUSED_RESULT; /* Copy at most N characters from string into a buffer without fail.  */ extern char *xstrndup (const char *, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_WARN_UNUSED_RESULT; /* Copy an existing memory buffer to a new memory buffer without fail.  */ extern void *xmemdup (const void *, size_t, size_t) ATTRIBUTE_MALLOC ATTRIBUTE_RETURNS_NONNULL ATTRIBUTE_WARN_UNUSED_RESULT; /* Physical memory routines.  Return values are in BYTES.  */extern double physmem_total (void);extern double physmem_available (void); /* Compute the 32-bit CRC of a block of memory.  */extern unsigned int xcrc32 (const unsigned char *, int, unsigned int); /* These macros provide a K&R/C89/C++-friendly way of allocating structures   with nice encapsulation.  The XDELETE*() macros are technically   superfluous, but provided here for symmetry.  Using them consistently   makes it easier to update client code to use different allocators such   as new/delete and new[]/delete[].  */ /* Scalar allocators.  */ #define XALLOCA(T)		((T *) alloca (sizeof (T)))#define XNEW(T)			((T *) xmalloc (sizeof (T)))#define XCNEW(T)		((T *) xcalloc (1, sizeof (T)))#define XDUP(T, P)		((T *) xmemdup ((P), sizeof (T), sizeof (T)))#define XDELETE(P)		free ((void*) (P)) /* Array allocators.  */ #define XALLOCAVEC(T, N)	((T *) alloca (sizeof (T) * (N)))#define XNEWVEC(T, N)		((T *) xmalloc (sizeof (T) * (N)))#define XCNEWVEC(T, N)		((T *) xcalloc ((N), sizeof (T)))#define XDUPVEC(T, P, N)	((T *) xmemdup ((P), sizeof (T) * (N), sizeof (T) * (N)))#define XRESIZEVEC(T, P, N)	((T *) xrealloc ((void *) (P), sizeof (T) * (N)))#define XDELETEVEC(P)		free ((void*) (P)) /* Allocators for variable-sized structures and raw buffers.  */ #define XALLOCAVAR(T, S)	((T *) alloca ((S)))#define XNEWVAR(T, S)		((T *) xmalloc ((S)))#define XCNEWVAR(T, S)		((T *) xcalloc (1, (S)))#define XDUPVAR(T, P, S1, S2)	((T *) xmemdup ((P), (S1), (S2)))#define XRESIZEVAR(T, P, S)	((T *) xrealloc ((P), (S))) /* Type-safe obstack allocator.  */ #define XOBNEW(O, T)		((T *) obstack_alloc ((O), sizeof (T)))#define XOBNEWVEC(O, T, N)	((T *) obstack_alloc ((O), sizeof (T) * (N)))#define XOBNEWVAR(O, T, S)	((T *) obstack_alloc ((O), (S)))#define XOBFINISH(O, T)         ((T) obstack_finish ((O))) /* hex character manipulation routines */ #define _hex_array_size 256#define _hex_bad	99extern const unsigned char _hex_value[_hex_array_size];extern void hex_init (void);#define hex_p(c)	(hex_value (c) != _hex_bad)/* If you change this, note well: Some code relies on side effects in   the argument being performed exactly once.  */#define hex_value(c)	((unsigned int) _hex_value[(unsigned char) (c)]) /* Flags for pex_init.  These are bits to be or'ed together.  */ /* Record subprocess times, if possible.  */#define PEX_RECORD_TIMES	0x1 /* Use pipes for communication between processes, if possible.  */#define PEX_USE_PIPES		0x2 /* Save files used for communication between processes.  */#define PEX_SAVE_TEMPS		0x4 /* Max number of alloca bytes per call before we must switch to malloc.    ?? Swiped from gnulib's regex_internal.h header.  Is this actually   the case?  This number seems arbitrary, though sane.    The OS usually guarantees only one guard page at the bottom of the stack,   and a page size can be as small as 4096 bytes.  So we cannot safely   allocate anything larger than 4096 bytes.  Also care for the possibility   of a few compiler-allocated temporary stack slots.  */#define MAX_ALLOCA_SIZE	4032 /* Prepare to execute one or more programs, with standard output of   each program fed to standard input of the next.   FLAGS	As above.   PNAME	The name of the program to report in error messages.   TEMPBASE	A base name to use for temporary files; may be NULL to   		use a random name.   Returns NULL on error.  */ extern struct pex_obj *pex_init (int flags, const char *pname,				 const char *tempbase) ATTRIBUTE_RETURNS_NONNULL; /* Flags for pex_run.  These are bits to be or'ed together.  */ /* Last program in pipeline.  Standard output of program goes to   OUTNAME, or, if OUTNAME is NULL, to standard output of caller.  Do   not set this if you want to call pex_read_output.  After this is   set, pex_run may no longer be called with the same struct   pex_obj.  */#define PEX_LAST		0x1 /* Search for program in executable search path.  */#define PEX_SEARCH		0x2 /* OUTNAME is a suffix.  */#define PEX_SUFFIX		0x4 /* Send program's standard error to standard output.  */#define PEX_STDERR_TO_STDOUT	0x8 /* Input file should be opened in binary mode.  This flag is ignored   on Unix.  */#define PEX_BINARY_INPUT	0x10 /* Output file should be opened in binary mode.  This flag is ignored   on Unix.  For proper behaviour PEX_BINARY_INPUT and   PEX_BINARY_OUTPUT have to match appropriately--i.e., a call using   PEX_BINARY_OUTPUT should be followed by a call using   PEX_BINARY_INPUT.  */#define PEX_BINARY_OUTPUT	0x20 /* Capture stderr to a pipe.  The output can be read by   calling pex_read_err and reading from the returned   FILE object.  This flag may be specified only for   the last program in a pipeline.    This flag is supported only on Unix and Windows.  */#define PEX_STDERR_TO_PIPE	0x40 /* Capture stderr in binary mode.  This flag is ignored   on Unix.  */#define PEX_BINARY_ERROR	0x80 /* Append stdout to existing file instead of truncating it.  */#define PEX_STDOUT_APPEND	0x100 /* Thes same as PEX_STDOUT_APPEND, but for STDERR.  */#define PEX_STDERR_APPEND	0x200 /* Execute one program.  Returns NULL on success.  On error returns an

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