Mercurial > gnulib
view m4/random_r.m4 @ 40212:8da9577294da
unistr/*, uniconv/*: Fix undefined behaviour.
Reported by Jeffrey Walton <noloader@gmail.com>.
* lib/unistr/u-cpy.h (FUNC): Don't invoke memcpy with a zero size.
* lib/unistr/u-cpy-alloc.h (FUNC): Likewise.
* lib/uniconv/u8-conv-from-enc.c (u8_conv_from_encoding): Likewise.
* lib/uniconv/u8-conv-to-enc.c (u8_conv_to_encoding): Likewise.
author | Bruno Haible <bruno@clisp.org> |
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date | Sat, 09 Mar 2019 00:01:47 +0100 |
parents | b06060465f09 |
children |
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# serial 5 dnl Copyright (C) 2008-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_FUNC_RANDOM_R], [ AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) AC_CHECK_HEADERS([random.h], [], [], [AC_INCLUDES_DEFAULT]) if test $ac_cv_header_random_h = no; then HAVE_RANDOM_H=0 fi AC_CHECK_TYPES([struct random_data], [], [HAVE_STRUCT_RANDOM_DATA=0], [[#include <stdlib.h> #if HAVE_RANDOM_H # include <random.h> #endif ]]) dnl On AIX and OSF/1, these functions exist, but with different declarations. dnl Override them all. case "$host_os" in aix* | osf*) REPLACE_RANDOM_R=1 ;; *) AC_CHECK_FUNCS([random_r]) if test $ac_cv_func_random_r = no; then HAVE_RANDOM_R=0 fi ;; esac ]) # Prerequisites of lib/random_r.c. AC_DEFUN([gl_PREREQ_RANDOM_R], [ : ])