Mercurial > gnulib
view m4/signalblocking.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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# signalblocking.m4 serial 14 dnl Copyright (C) 2001-2002, 2006-2019 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. # Determine available signal blocking primitives. Three different APIs exist: # 1) POSIX: sigemptyset, sigaddset, sigprocmask # 2) SYSV: sighold, sigrelse # 3) BSD: sigblock, sigsetmask # For simplicity, here we check only for the POSIX signal blocking. AC_DEFUN([gl_SIGNALBLOCKING], [ AC_REQUIRE([gl_SIGNAL_H_DEFAULTS]) AC_REQUIRE([gl_CHECK_TYPE_SIGSET_T]) if test $gl_cv_type_sigset_t = yes; then AC_CHECK_FUNC([sigprocmask], [gl_cv_func_sigprocmask=1]) fi if test -z "$gl_cv_func_sigprocmask"; then HAVE_POSIX_SIGNALBLOCKING=0 fi ]) # Prerequisites of lib/sigprocmask.c. AC_DEFUN([gl_PREREQ_SIGPROCMASK], [:])