Mercurial > gnulib
view m4/perl.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 |
line wrap: on
line source
# serial 9 dnl From Jim Meyering. dnl Find a new-enough version of Perl. # Copyright (C) 1998-2001, 2003-2004, 2007, 2009-2019 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. AC_DEFUN([gl_PERL], [ dnl FIXME: don't hard-code 5.005 AC_MSG_CHECKING([for perl5.005 or newer]) if test "${PERL+set}" = set; then # 'PERL' is set in the user's environment. candidate_perl_names="$PERL" perl_specified=yes else candidate_perl_names='perl perl5' perl_specified=no fi found=no AC_SUBST([PERL]) PERL="$am_missing_run perl" for perl in $candidate_perl_names; do # Run test in a subshell; some versions of sh will print an error if # an executable is not found, even if stderr is redirected. if ( $perl -e 'require 5.005; use File::Compare' ) > /dev/null 2>&1; then PERL=$perl found=yes break fi done AC_MSG_RESULT([$found]) test $found = no && AC_MSG_WARN([ WARNING: You don't seem to have perl5.005 or newer installed, or you lack a usable version of the Perl File::Compare module. As a result, you may be unable to run a few tests or to regenerate certain files if you modify the sources from which they are derived. ] ) ])