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+/* system-dependent definitions for fileutils, textutils, and sh-utils packages.
+ Copyright (C) 1989, 1991-2004 Free Software Foundation, Inc.
+
+ 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include <alloca.h>
+
+/* Include sys/types.h before this file. */
+
+#if 2 <= __GLIBC__ && 2 <= __GLIBC_MINOR__
+# if ! defined _SYS_TYPES_H
+you must include <sys/types.h> before including this file
+# endif
+#endif
+
+#include <sys/stat.h>
+
+#if !defined HAVE_MKFIFO
+# define mkfifo(path, mode) (mknod ((path), (mode) | S_IFIFO, 0))
+#endif
+
+#if HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+
+/* <unistd.h> should be included before any preprocessor test
+ of _POSIX_VERSION. */
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#ifndef STDIN_FILENO
+# define STDIN_FILENO 0
+#endif
+
+#ifndef STDOUT_FILENO
+# define STDOUT_FILENO 1
+#endif
+
+#ifndef STDERR_FILENO
+# define STDERR_FILENO 2
+#endif
+
+
+/* limits.h must come before pathmax.h because limits.h on some systems
+ undefs PATH_MAX, whereas pathmax.h sets PATH_MAX. */
+#include <limits.h>
+
+#include "pathmax.h"
+#include "localedir.h"
+
+#if TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# if HAVE_SYS_TIME_H
+# include <sys/time.h>
+# else
+# include <time.h>
+# endif
+#endif
+
+/* Since major is a function on SVR4, we can't use `ifndef major'. */
+#if MAJOR_IN_MKDEV
+# include <sys/mkdev.h>
+# define HAVE_MAJOR
+#endif
+#if MAJOR_IN_SYSMACROS
+# include <sys/sysmacros.h>
+# define HAVE_MAJOR
+#endif
+#ifdef major /* Might be defined in sys/types.h. */
+# define HAVE_MAJOR
+#endif
+
+#ifndef HAVE_MAJOR
+# define major(dev) (((dev) >> 8) & 0xff)
+# define minor(dev) ((dev) & 0xff)
+# define makedev(maj, min) (((maj) << 8) | (min))
+#endif
+#undef HAVE_MAJOR
+
+#if ! defined makedev && defined mkdev
+# define makedev(maj, min) mkdev (maj, min)
+#endif
+
+#if HAVE_UTIME_H
+# include <utime.h>
+#endif
+
+/* Some systems (even some that do have <utime.h>) don't declare this
+ structure anywhere. */
+#ifndef HAVE_STRUCT_UTIMBUF
+struct utimbuf
+{
+ long actime;
+ long modtime;
+};
+#endif
+
+/* Don't use bcopy! Use memmove if source and destination may overlap,
+ memcpy otherwise. */
+
+#include <string.h>
+#if ! HAVE_DECL_MEMRCHR
+void *memrchr (const void *, int, size_t);
+#endif
+
+#include <errno.h>
+
+/* Some systems don't define the following symbols. */
+#ifndef ENOSYS
+# define ENOSYS (-1)
+#endif
+#ifndef EISDIR
+# define EISDIR (-1)
+#endif
+
+#include <stdbool.h>
+
+#define getopt system_getopt
+#include <stdlib.h>
+#undef getopt
+
+/* The following test is to work around the gross typo in
+ systems like Sony NEWS-OS Release 4.0C, whereby EXIT_FAILURE
+ is defined to 0, not 1. */
+#if !EXIT_FAILURE
+# undef EXIT_FAILURE
+# define EXIT_FAILURE 1
+#endif
+
+#ifndef EXIT_SUCCESS
+# define EXIT_SUCCESS 0
+#endif
+
+/* Exit statuses for programs like 'env' that exec other programs.
+ EXIT_FAILURE might not be 1, so use EXIT_FAIL in such programs. */
+enum
+{
+ EXIT_FAIL = 1,
+ EXIT_CANNOT_INVOKE = 126,
+ EXIT_ENOENT = 127
+};
+
+#include "exitfail.h"
+
+/* Set exit_failure to STATUS if that's not the default already. */
+static inline void
+initialize_exit_failure (int status)
+{
+ if (status != EXIT_FAILURE)
+ exit_failure = status;
+}
+
+#if HAVE_FCNTL_H
+# include <fcntl.h>
+#else
+# include <sys/file.h>
+#endif
+
+#if !defined SEEK_SET
+# define SEEK_SET 0
+# define SEEK_CUR 1
+# define SEEK_END 2
+#endif
+#ifndef F_OK
+# define F_OK 0
+# define X_OK 1
+# define W_OK 2
+# define R_OK 4
+#endif
+
+/* For systems that distinguish between text and binary I/O.
+ O_BINARY is usually declared in fcntl.h */
+#if !defined O_BINARY && defined _O_BINARY
+ /* For MSC-compatible compilers. */
+# define O_BINARY _O_BINARY
+# define O_TEXT _O_TEXT
+#endif
+
+#if !defined O_DIRECT
+# define O_DIRECT 0
+#endif
+
+#if !defined O_DSYNC
+# define O_DSYNC 0
+#endif
+
+#if !defined O_NDELAY
+# define O_NDELAY 0
+#endif
+
+#if !defined O_NONBLOCK
+# define O_NONBLOCK O_NDELAY
+#endif
+
+#if !defined O_NOCTTY
+# define O_NOCTTY 0
+#endif
+
+#if !defined O_NOFOLLOW
+# define O_NOFOLLOW 0
+#endif
+
+#if !defined O_RSYNC
+# define O_RSYNC 0
+#endif
+
+#if !defined O_SYNC
+# define O_SYNC 0
+#endif
+
+#ifdef __BEOS__
+ /* BeOS 5 has O_BINARY and O_TEXT, but they have no effect. */
+# undef O_BINARY
+# undef O_TEXT
+#endif
+
+#if O_BINARY
+# ifndef __DJGPP__
+# define setmode _setmode
+# define fileno(_fp) _fileno (_fp)
+# endif /* not DJGPP */
+# define SET_MODE(_f, _m) setmode (_f, _m)
+# define SET_BINARY(_f) do {if (!isatty(_f)) setmode (_f, O_BINARY);} while (0)
+# define SET_BINARY2(_f1, _f2) \
+ do { \
+ if (!isatty (_f1)) \
+ { \
+ setmode (_f1, O_BINARY); \
+ if (!isatty (_f2)) \
+ setmode (_f2, O_BINARY); \
+ } \
+ } while(0)
+#else
+# define SET_MODE(_f, _m) (void)0
+# define SET_BINARY(f) (void)0
+# define SET_BINARY2(f1,f2) (void)0
+# ifndef O_BINARY
+# define O_BINARY 0
+# endif
+# define O_TEXT 0
+#endif /* O_BINARY */
+
+#if HAVE_DIRENT_H
+# include <dirent.h>
+# define NLENGTH(direct) (strlen((direct)->d_name))
+#else /* not HAVE_DIRENT_H */
+# define dirent direct
+# define NLENGTH(direct) ((direct)->d_namlen)
+# if HAVE_SYS_NDIR_H
+# include <sys/ndir.h>
+# endif /* HAVE_SYS_NDIR_H */
+# if HAVE_SYS_DIR_H
+# include <sys/dir.h>
+# endif /* HAVE_SYS_DIR_H */
+# if HAVE_NDIR_H
+# include <ndir.h>
+# endif /* HAVE_NDIR_H */
+#endif /* HAVE_DIRENT_H */
+
+#if CLOSEDIR_VOID
+/* Fake a return value. */
+# define CLOSEDIR(d) (closedir (d), 0)
+#else
+# define CLOSEDIR(d) closedir (d)
+#endif
+
+/* Get or fake the disk device blocksize.
+ Usually defined by sys/param.h (if at all). */
+#if !defined DEV_BSIZE && defined BSIZE
+# define DEV_BSIZE BSIZE
+#endif
+#if !defined DEV_BSIZE && defined BBSIZE /* SGI */
+# define DEV_BSIZE BBSIZE
+#endif
+#ifndef DEV_BSIZE
+# define DEV_BSIZE 4096
+#endif
+
+/* Extract or fake data from a `struct stat'.
+ ST_BLKSIZE: Preferred I/O blocksize for the file, in bytes.
+ ST_NBLOCKS: Number of blocks in the file, including indirect blocks.
+ ST_NBLOCKSIZE: Size of blocks used when calculating ST_NBLOCKS. */
+#ifndef HAVE_STRUCT_STAT_ST_BLOCKS
+# define ST_BLKSIZE(statbuf) DEV_BSIZE
+# if defined _POSIX_SOURCE || !defined BSIZE /* fileblocks.c uses BSIZE. */
+# define ST_NBLOCKS(statbuf) \
+ ((statbuf).st_size / ST_NBLOCKSIZE + ((statbuf).st_size % ST_NBLOCKSIZE != 0))
+# else /* !_POSIX_SOURCE && BSIZE */
+# define ST_NBLOCKS(statbuf) \
+ (S_ISREG ((statbuf).st_mode) \
+ || S_ISDIR ((statbuf).st_mode) \
+ ? st_blocks ((statbuf).st_size) : 0)
+# endif /* !_POSIX_SOURCE && BSIZE */
+#else /* HAVE_STRUCT_STAT_ST_BLOCKS */
+/* Some systems, like Sequents, return st_blksize of 0 on pipes.
+ Also, when running `rsh hpux11-system cat any-file', cat would
+ determine that the output stream had an st_blksize of 2147421096.
+ So here we arbitrarily limit the `optimal' block size to 4MB.
+ If anyone knows of a system for which the legitimate value for
+ st_blksize can exceed 4MB, please report it as a bug in this code. */
+# define ST_BLKSIZE(statbuf) ((0 < (statbuf).st_blksize \
+ && (statbuf).st_blksize <= (1 << 22)) /* 4MB */ \
+ ? (statbuf).st_blksize : DEV_BSIZE)
+# if defined hpux || defined __hpux__ || defined __hpux
+/* HP-UX counts st_blocks in 1024-byte units.
+ This loses when mixing HP-UX and BSD file systems with NFS. */
+# define ST_NBLOCKSIZE 1024
+# else /* !hpux */
+# if defined _AIX && defined _I386
+/* AIX PS/2 counts st_blocks in 4K units. */
+# define ST_NBLOCKSIZE (4 * 1024)
+# else /* not AIX PS/2 */
+# if defined _CRAY
+# define ST_NBLOCKS(statbuf) \
+ (S_ISREG ((statbuf).st_mode) \
+ || S_ISDIR ((statbuf).st_mode) \
+ ? (statbuf).st_blocks * ST_BLKSIZE(statbuf)/ST_NBLOCKSIZE : 0)
+# endif /* _CRAY */
+# endif /* not AIX PS/2 */
+# endif /* !hpux */
+#endif /* HAVE_STRUCT_STAT_ST_BLOCKS */
+
+#ifndef ST_NBLOCKS
+# define ST_NBLOCKS(statbuf) ((statbuf).st_blocks)
+#endif
+
+#ifndef ST_NBLOCKSIZE
+# define ST_NBLOCKSIZE 512
+#endif
+
+/* Redirection and wildcarding when done by the utility itself.
+ Generally a noop, but used in particular for native VMS. */
+#ifndef initialize_main
+# define initialize_main(ac, av)
+#endif
+
+#include "stat-macros.h"
+
+#include "timespec.h"
+
+#ifndef RETSIGTYPE
+# define RETSIGTYPE void
+#endif
+
+#ifdef __DJGPP__
+ /* We need the declaration of setmode. */
+# include <io.h>
+ /* We need the declaration of __djgpp_set_ctrl_c. */
+# include <sys/exceptn.h>
+#endif
+
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+#if HAVE_STDINT_H
+# include <stdint.h>
+#endif
+
+#if ULONG_MAX < ULLONG_MAX
+# define LONGEST_MODIFIER "ll"
+#else
+# define LONGEST_MODIFIER "l"
+#endif
+#if PRI_MACROS_BROKEN
+# undef PRIdMAX
+# undef PRIoMAX
+# undef PRIuMAX
+# undef PRIxMAX
+#endif
+#ifndef PRIdMAX
+# define PRIdMAX LONGEST_MODIFIER "d"
+#endif
+#ifndef PRIoMAX
+# define PRIoMAX LONGEST_MODIFIER "o"
+#endif
+#ifndef PRIuMAX
+# define PRIuMAX LONGEST_MODIFIER "u"
+#endif
+#ifndef PRIxMAX
+# define PRIxMAX LONGEST_MODIFIER "x"
+#endif
+
+#include <ctype.h>
+
+/* Jim Meyering writes:
+
+ "... Some ctype macros are valid only for character codes that
+ isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when
+ using /bin/cc or gcc but without giving an ansi option). So, all
+ ctype uses should be through macros like ISPRINT... If
+ STDC_HEADERS is defined, then autoconf has verified that the ctype
+ macros don't need to be guarded with references to isascii. ...
+ Defining isascii to 1 should let any compiler worth its salt
+ eliminate the && through constant folding."
+
+ Bruno Haible adds:
+
+ "... Furthermore, isupper(c) etc. have an undefined result if c is
+ outside the range -1 <= c <= 255. One is tempted to write isupper(c)
+ with c being of type `char', but this is wrong if c is an 8-bit
+ character >= 128 which gets sign-extended to a negative value.
+ The macro ISUPPER protects against this as well." */
+
+#if STDC_HEADERS || (!defined (isascii) && !HAVE_ISASCII)
+# define IN_CTYPE_DOMAIN(c) 1
+#else
+# define IN_CTYPE_DOMAIN(c) isascii(c)
+#endif
+
+#ifdef isblank
+# define ISBLANK(c) (IN_CTYPE_DOMAIN (c) && isblank (c))
+#else
+# define ISBLANK(c) ((c) == ' ' || (c) == '\t')
+#endif
+#ifdef isgraph
+# define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isgraph (c))
+#else
+# define ISGRAPH(c) (IN_CTYPE_DOMAIN (c) && isprint (c) && !isspace (c))
+#endif
+
+/* This is defined in <sys/euc.h> on at least Solaris2.6 systems. */
+#undef ISPRINT
+
+#define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c))
+#define ISALNUM(c) (IN_CTYPE_DOMAIN (c) && isalnum (c))
+#define ISALPHA(c) (IN_CTYPE_DOMAIN (c) && isalpha (c))
+#define ISCNTRL(c) (IN_CTYPE_DOMAIN (c) && iscntrl (c))
+#define ISLOWER(c) (IN_CTYPE_DOMAIN (c) && islower (c))
+#define ISPUNCT(c) (IN_CTYPE_DOMAIN (c) && ispunct (c))
+#define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c))
+#define ISUPPER(c) (IN_CTYPE_DOMAIN (c) && isupper (c))
+#define ISXDIGIT(c) (IN_CTYPE_DOMAIN (c) && isxdigit (c))
+#define ISDIGIT_LOCALE(c) (IN_CTYPE_DOMAIN (c) && isdigit (c))
+
+#if STDC_HEADERS
+# define TOLOWER(Ch) tolower (Ch)
+# define TOUPPER(Ch) toupper (Ch)
+#else
+# define TOLOWER(Ch) (ISUPPER (Ch) ? tolower (Ch) : (Ch))
+# define TOUPPER(Ch) (ISLOWER (Ch) ? toupper (Ch) : (Ch))
+#endif
+
+/* ISDIGIT differs from ISDIGIT_LOCALE, as follows:
+ - Its arg may be any int or unsigned int; it need not be an unsigned char.
+ - It's guaranteed to evaluate its argument exactly once.
+ - It's typically faster.
+ POSIX says that only '0' through '9' are digits. Prefer ISDIGIT to
+ ISDIGIT_LOCALE unless it's important to use the locale's definition
+ of `digit' even when the host does not conform to POSIX. */
+#define ISDIGIT(c) ((unsigned int) (c) - '0' <= 9)
+
+/* Convert a possibly-signed character to an unsigned character. This is
+ a bit safer than casting to unsigned char, since it catches some type
+ errors that the cast doesn't. */
+static inline unsigned char to_uchar (char ch) { return ch; }
+
+/* Take care of NLS matters. */
+
+#if HAVE_LOCALE_H
+# include <locale.h>
+#else
+# define setlocale(Category, Locale) /* empty */
+#endif
+
+#include "gettext.h"
+#if ! ENABLE_NLS
+# undef textdomain
+# define textdomain(Domainname) /* empty */
+# undef bindtextdomain
+# define bindtextdomain(Domainname, Dirname) /* empty */
+#endif
+
+#define _(msgid) gettext (msgid)
+#define N_(msgid) msgid
+
+#ifndef HAVE_SETLOCALE
+# define HAVE_SETLOCALE 0
+#endif
+
+#define STREQ(a, b) (strcmp ((a), (b)) == 0)
+
+#if !HAVE_DECL_FREE
+void free ();
+#endif
+
+#if !HAVE_DECL_MALLOC
+char *malloc ();
+#endif
+
+#if !HAVE_DECL_MEMCHR
+char *memchr ();
+#endif
+
+#if !HAVE_DECL_REALLOC
+char *realloc ();
+#endif
+
+#if !HAVE_DECL_STPCPY
+# ifndef stpcpy
+char *stpcpy ();
+# endif
+#endif
+
+#if !HAVE_DECL_STRNDUP
+char *strndup ();
+#endif
+
+#if !HAVE_DECL_STRSTR
+char *strstr ();
+#endif
+
+#if !HAVE_DECL_GETENV
+char *getenv ();
+#endif
+
+#if !HAVE_DECL_LSEEK
+off_t lseek ();
+#endif
+
+/* This is needed on some AIX systems. */
+#if !HAVE_DECL_STRTOUL
+unsigned long strtoul ();
+#endif
+
+#if !HAVE_DECL_GETLOGIN
+char *getlogin ();
+#endif
+
+#if !HAVE_DECL_TTYNAME
+char *ttyname ();
+#endif
+
+#if !HAVE_DECL_GETEUID
+uid_t geteuid ();
+#endif
+
+#if !HAVE_DECL_GETPWUID
+struct passwd *getpwuid ();
+#endif
+
+#if !HAVE_DECL_GETGRGID
+struct group *getgrgid ();
+#endif
+
+#if !HAVE_DECL_GETUID
+uid_t getuid ();
+#endif
+
+#include "xalloc.h"
+
+#if ! defined HAVE_MEMPCPY && ! defined mempcpy
+/* Be CAREFUL that there are no side effects in N. */
+# define mempcpy(D, S, N) ((void *) ((char *) memcpy (D, S, N) + (N)))
+#endif
+
+/* Include automatically-generated macros for unlocked I/O. */
+#include "unlocked-io.h"
+
+#define SAME_INODE(Stat_buf_1, Stat_buf_2) \
+ ((Stat_buf_1).st_ino == (Stat_buf_2).st_ino \
+ && (Stat_buf_1).st_dev == (Stat_buf_2).st_dev)
+
+#define DOT_OR_DOTDOT(Basename) \
+ (Basename[0] == '.' && (Basename[1] == '\0' \
+ || (Basename[1] == '.' && Basename[2] == '\0')))
+
+/* A wrapper for readdir so that callers don't see entries for `.' or `..'. */
+static inline struct dirent const *
+readdir_ignoring_dot_and_dotdot (DIR *dirp)
+{
+ while (1)
+ {
+ struct dirent const *dp = readdir (dirp);
+ if (dp == NULL || ! DOT_OR_DOTDOT (dp->d_name))
+ return dp;
+ }
+}
+
+#if SETVBUF_REVERSED
+# define SETVBUF(Stream, Buffer, Type, Size) \
+ setvbuf (Stream, Type, Buffer, Size)
+#else
+# define SETVBUF(Stream, Buffer, Type, Size) \
+ setvbuf (Stream, Buffer, Type, Size)
+#endif
+
+/* Factor out some of the common --help and --version processing code. */
+
+/* These enum values cannot possibly conflict with the option values
+ ordinarily used by commands, including CHAR_MAX + 1, etc. Avoid
+ CHAR_MIN - 1, as it may equal -1, the getopt end-of-options value. */
+enum
+{
+ GETOPT_HELP_CHAR = (CHAR_MIN - 2),
+ GETOPT_VERSION_CHAR = (CHAR_MIN - 3)
+};
+
+#define GETOPT_HELP_OPTION_DECL \
+ "help", no_argument, 0, GETOPT_HELP_CHAR
+#define GETOPT_VERSION_OPTION_DECL \
+ "version", no_argument, 0, GETOPT_VERSION_CHAR
+
+#define case_GETOPT_HELP_CHAR \
+ case GETOPT_HELP_CHAR: \
+ usage (EXIT_SUCCESS); \
+ break;
+
+#define HELP_OPTION_DESCRIPTION \
+ _(" --help display this help and exit\n")
+#define VERSION_OPTION_DESCRIPTION \
+ _(" --version output version information and exit\n")
+
+#include "closeout.h"
+#include "version-etc.h"
+
+#define case_GETOPT_VERSION_CHAR(Program_name, Authors) \
+ case GETOPT_VERSION_CHAR: \
+ version_etc (stdout, Program_name, GNU_PACKAGE, VERSION, Authors, \
+ (char *) NULL); \
+ exit (EXIT_SUCCESS); \
+ break;
+
+#ifndef MAX
+# define MAX(a, b) ((a) > (b) ? (a) : (b))
+#endif
+
+#ifndef MIN
+# define MIN(a,b) (((a) < (b)) ? (a) : (b))
+#endif
+
+/* The extra casts work around common compiler bugs. */
+#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
+/* The outer cast is needed to work around a bug in Cray C 5.0.3.0.
+ It is necessary at least when t == time_t. */
+#define TYPE_MINIMUM(t) ((t) (TYPE_SIGNED (t) \
+ ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) : (t) 0))
+#define TYPE_MAXIMUM(t) ((t) (~ (t) 0 - TYPE_MINIMUM (t)))
+
+/* Upper bound on the string length of an integer converted to string.
+ 302 / 1000 is ceil (log10 (2.0)). Subtract 1 for the sign bit;
+ add 1 for integer division truncation; add 1 more for a minus sign. */
+#define INT_STRLEN_BOUND(t) ((sizeof (t) * CHAR_BIT - 1) * 302 / 1000 + 2)
+
+#ifndef CHAR_MIN
+# define CHAR_MIN TYPE_MINIMUM (char)
+#endif
+
+#ifndef CHAR_MAX
+# define CHAR_MAX TYPE_MAXIMUM (char)
+#endif
+
+#ifndef SCHAR_MIN
+# define SCHAR_MIN (-1 - SCHAR_MAX)
+#endif
+
+#ifndef SCHAR_MAX
+# define SCHAR_MAX (CHAR_MAX == UCHAR_MAX ? CHAR_MAX / 2 : CHAR_MAX)
+#endif
+
+#ifndef UCHAR_MAX
+# define UCHAR_MAX TYPE_MAXIMUM (unsigned char)
+#endif
+
+#ifndef SHRT_MIN
+# define SHRT_MIN TYPE_MINIMUM (short int)
+#endif
+
+#ifndef SHRT_MAX
+# define SHRT_MAX TYPE_MAXIMUM (short int)
+#endif
+
+#ifndef INT_MAX
+# define INT_MAX TYPE_MAXIMUM (int)
+#endif
+
+#ifndef INT_MIN
+# define INT_MIN TYPE_MINIMUM (int)
+#endif
+
+#ifndef INTMAX_MAX
+# define INTMAX_MAX TYPE_MAXIMUM (intmax_t)
+#endif
+
+#ifndef INTMAX_MIN
+# define INTMAX_MIN TYPE_MINIMUM (intmax_t)
+#endif
+
+#ifndef UINT_MAX
+# define UINT_MAX TYPE_MAXIMUM (unsigned int)
+#endif
+
+#ifndef LONG_MAX
+# define LONG_MAX TYPE_MAXIMUM (long int)
+#endif
+
+#ifndef ULONG_MAX
+# define ULONG_MAX TYPE_MAXIMUM (unsigned long int)
+#endif
+
+#ifndef SIZE_MAX
+# define SIZE_MAX TYPE_MAXIMUM (size_t)
+#endif
+
+#ifndef SSIZE_MAX
+# define SSIZE_MAX TYPE_MAXIMUM (ssize_t)
+#endif
+
+#ifndef UINTMAX_MAX
+# define UINTMAX_MAX TYPE_MAXIMUM (uintmax_t)
+#endif
+
+#ifndef OFF_T_MIN
+# define OFF_T_MIN TYPE_MINIMUM (off_t)
+#endif
+
+#ifndef OFF_T_MAX
+# define OFF_T_MAX TYPE_MAXIMUM (off_t)
+#endif
+
+#ifndef UID_T_MAX
+# define UID_T_MAX TYPE_MAXIMUM (uid_t)
+#endif
+
+#ifndef GID_T_MAX
+# define GID_T_MAX TYPE_MAXIMUM (gid_t)
+#endif
+
+#ifndef PID_T_MAX
+# define PID_T_MAX TYPE_MAXIMUM (pid_t)
+#endif
+
+/* Use this to suppress gcc's `...may be used before initialized' warnings. */
+#ifdef lint
+# define IF_LINT(Code) Code
+#else
+# define IF_LINT(Code) /* empty */
+#endif
+
+#ifndef __attribute__
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) || __STRICT_ANSI__
+# define __attribute__(x)
+# endif
+#endif
+
+#ifndef ATTRIBUTE_NORETURN
+# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
+#endif
+
+#ifndef ATTRIBUTE_UNUSED
+# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+#endif
+
+#if defined strdupa
+# define ASSIGN_STRDUPA(DEST, S) \
+ do { DEST = strdupa (S); } while (0)
+#else
+# define ASSIGN_STRDUPA(DEST, S) \
+ do \
+ { \
+ const char *s_ = (S); \
+ size_t len_ = strlen (s_) + 1; \
+ char *tmp_dest_ = alloca (len_); \
+ DEST = memcpy (tmp_dest_, (s_), len_); \
+ } \
+ while (0)
+#endif
+
+#ifndef EOVERFLOW
+# define EOVERFLOW EINVAL
+#endif
+
+#if ! HAVE_FSEEKO && ! defined fseeko
+# define fseeko(s, o, w) ((o) == (long int) (o) \
+ ? fseek (s, o, w) \
+ : (errno = EOVERFLOW, -1))
+#endif
+
+/* Compute the greatest common divisor of U and V using Euclid's
+ algorithm. U and V must be nonzero. */
+
+static inline size_t
+gcd (size_t u, size_t v)
+{
+ do
+ {
+ size_t t = u % v;
+ u = v;
+ v = t;
+ }
+ while (v);
+
+ return u;
+}
+
+/* Compute the least common multiple of U and V. U and V must be
+ nonzero. There is no overflow checking, so callers should not
+ specify outlandish sizes. */
+
+static inline size_t
+lcm (size_t u, size_t v)
+{
+ return u * (v / gcd (u, v));
+}
+
+/* Return PTR, aligned upward to the next multiple of ALIGNMENT.
+ ALIGNMENT must be nonzero. The caller must arrange for ((char *)
+ PTR) through ((char *) PTR + ALIGNMENT - 1) to be addressable
+ locations. */
+
+static inline void *
+ptr_align (void *ptr, size_t alignment)
+{
+ char *p0 = ptr;
+ char *p1 = p0 + alignment - 1;
+ return p1 - (size_t) p1 % alignment;
+}