kc3-lang/gnulib/m4/calloc.m4

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• Hash : 7c3f8da8
  Author :
  Date : 2005-09-23T04:15:13
  

  Sync from coreutils.
  
  * .cppi-disable: Add regcomp.c, regex_internal.c, regex_internal.h,
  stat-time.h.
  * argmatch.h: Include verify.h
  (ARGMATCH_VERIFY): Use verify rather than rolling our own.
  (ARGMATCH_ASSERT): Remove; unused.
  * canonicalize.c: Assume STDC_HEADERS.
  * exclude.c: Include "strcase.h".
  * regex_internal.h [!defined _LIBC]: Likewise.
  * getusershell.c: Include stdio--.h rather than stdio.h
  and stdio-safer.h.
  (getusershell): Call fopen, not fopen_safer.
  * save-cwd.c: Include fcntl--.h rather than fcntl.h.
  Do not include unistd-safer.h.
  (save_cwd): Don't call fd_safer; no longer needed
  now that we include fcntl--.h.
  
  * modules/argmatch (Depends-on): Add verify.
  * modules/getloadavg (Depends-on): Depend on fcntl-safer, not
  unistd-safer.
  * modules/save-cwd (Depends-on): Likewise.
  
  * backupfile.m4, calloc.m4, chown.m4, cloexec.m4, dup2.m4:
  * fileblocks.m4, free.m4, ftruncate.m4, getcwd.m4, getpagesize.m4:
  * getugroups.m4, group-member.m4, idcache.m4, link-follow.m4:
  * mkstemp.m4, mktime.m4, mountlist.m4, nanosleep.m4, pathmax.m4:
  * physmem.m4, posixver.m4, putenv.m4, safe-read.m4, same.m4:
  * save-cwd.m4, stdio-safer.m4, unistd-safer.m4, unlinkdir.m4:
  * userspec.m4, xgetcwd.m4, xreadlink.m4:
  Don't bother checking for string.h, stdlib.h, unistd.h.
  * fts.m4 (gl_FUNC_FTS_CORE): Don't require
  AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK; that's now the lstat
  module's job.
  * jm-macros.m4 (gl_MACROS): Likewise.
  * prereq.m4 (gl_PREREQ): Add gl_FUNC_LSTAT.
  
  * backupfile.c: Use ARGMATCH_VERIFY, just in case.
  * posixtm.c (posixtime) [lint]: Initialize *all* of tm0, not just
  the .tm_year member, since otherwise gcc-4.0 would now warn about
  tm_zone, tm_gmtoff, tm_isdst, tm_yday, tm_wday.
  * quotearg.c (quotearg_n_options): Change code to be suboptimal, in
  order to avoid an unsuppressible warning from gcc on 64-bit systems.
  
  * lstat.m4 (gl_FUNC_LSTAT):
  Use AC_LIBSOURCES to require lstat.c and lstat.h.
  Remove obsolete comment.
  * xreadlink.m4: Use AC_LIBSOURCES and AC_LIBOBJ.
  * xstrtod.m4: Likewise.
  

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• m4/calloc.m4

• # calloc.m4 serial 5
  
  # Copyright (C) 2004, 2005 Free Software Foundation, Inc.
  # This file is free software; the Free Software Foundation
  # gives unlimited permission to copy and/or distribute it,
  # with or without modifications, as long as this notice is preserved.
  
  # Written by Jim Meyering.
  
  # Determine whether calloc (N, S) returns non-NULL when N*S is zero,
  # and returns NULL when N*S overflows.
  # If so, define HAVE_CALLOC.  Otherwise, define calloc to rpl_calloc
  # and arrange to use a calloc wrapper function that does work in that case.
  
  # _AC_FUNC_CALLOC_IF(IF-WORKS, IF-NOT)
  # -------------------------------------
  # If `calloc (0, 0)' is properly handled, run IF-WORKS, otherwise, IF-NOT.
  AC_DEFUN([_AC_FUNC_CALLOC_IF],
  [AC_REQUIRE([AC_HEADER_STDC])dnl
  AC_REQUIRE([AC_TYPE_SIZE_T])dnl
  AC_CACHE_CHECK([for GNU libc compatible calloc], ac_cv_func_calloc_0_nonnull,
  [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
  		  [exit (!calloc (0, 0) || calloc ((size_t) -1 / 8 + 1, 8));])],
  	       [ac_cv_func_calloc_0_nonnull=yes],
  	       [ac_cv_func_calloc_0_nonnull=no],
  	       [ac_cv_func_calloc_0_nonnull=no])])
  AS_IF([test $ac_cv_func_calloc_0_nonnull = yes], [$1], [$2])
  ])# AC_FUNC_CALLOC
  
  
  # AC_FUNC_CALLOC
  # ---------------
  # Report whether `calloc (0, 0)' is properly handled, and replace calloc if
  # needed.
  AC_DEFUN([AC_FUNC_CALLOC],
  [_AC_FUNC_CALLOC_IF(
    [AC_DEFINE([HAVE_CALLOC], 1,
  	     [Define to 1 if your system has a GNU libc compatible `calloc'
  	      function, and to 0 otherwise.])],
    [AC_DEFINE([HAVE_CALLOC], 0)
     AC_LIBOBJ([calloc])
     AC_DEFINE([calloc], [rpl_calloc],
        [Define to rpl_calloc if the replacement function should be used.])])
  ])# AC_FUNC_CALLOC
  

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