Mercurial > gnulib
view m4/assert_h.m4 @ 40214:452ab00796c7
Fix undefined behaviour.
* lib/bitrotate.h (rotl16, rotr16, rotl8, rotr8): Case x to
'unsigned int', to avoid shift operations on 'int'.
* lib/xmemdup0.c (xmemdup0): Don't invoke memcpy with a zero size.
* tests/test-count-leading-zeros.c (main): Use a random number that has
as many bits as TYPE, not only 2*15 or 2*31 bits.
* tests/test-count-trailing-zeros.c (main): Likewise.
* tests/test-count-one-bits.c (main): Likewise.
* tests/test-memmem.c: Don't include "null-ptr.h".
(main): Use zerosize_ptr() instead of null_ptr().
* modules/memmem-tests (Files): Remove tests/null-ptr.h.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 09 Mar 2019 20:32:25 +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"]) ])