Mercurial > gnulib
view m4/assert_h.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> |
---|---|
date | Sat, 09 Mar 2019 00:01:47 +0100 |
parents | b06060465f09 |
children |
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# assert-h.m4 dnl Copyright (C) 2011-2019 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. dnl From Paul Eggert. AC_DEFUN([gl_ASSERT_H], [ ASSERT_H= AC_CACHE_CHECK([for static_assert], [gl_cv_static_assert], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include <assert.h> static_assert (2 + 2 == 4, "arithmetic doesn't work"); ]], [[ static_assert (sizeof (char) == 1, "sizeof doesn't work"); ]])], [gl_cv_static_assert=yes], [gl_cv_static_assert=no])]) if test $gl_cv_static_assert = no; then ASSERT_H=assert.h gl_NEXT_HEADERS([assert.h]) fi AC_SUBST([ASSERT_H]) AM_CONDITIONAL([GL_GENERATE_ASSERT_H], [test -n "$ASSERT_H"]) ])