Mercurial > gnulib
view m4/sigaction.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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# sigaction.m4 serial 7 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. # Determine if sigaction interface is present. AC_DEFUN([gl_SIGACTION], [ AC_REQUIRE([gl_SIGNAL_H_DEFAULTS]) AC_CHECK_FUNCS_ONCE([sigaction]) if test $ac_cv_func_sigaction = yes; then AC_CHECK_MEMBERS([struct sigaction.sa_sigaction], , , [[#include <signal.h>]]) if test $ac_cv_member_struct_sigaction_sa_sigaction = no; then HAVE_STRUCT_SIGACTION_SA_SIGACTION=0 fi else HAVE_SIGACTION=0 fi ]) # Prerequisites of the part of lib/signal.in.h and of lib/sigaction.c. AC_DEFUN([gl_PREREQ_SIGACTION], [ AC_REQUIRE([gl_SIGNAL_H_DEFAULTS]) AC_REQUIRE([AC_C_RESTRICT]) AC_REQUIRE([AC_TYPE_UID_T]) AC_REQUIRE([gl_PREREQ_SIG_HANDLER_H]) AC_CHECK_FUNCS_ONCE([sigaltstack siginterrupt]) AC_CHECK_TYPES([siginfo_t], [], [], [[ #include <signal.h> ]]) if test $ac_cv_type_siginfo_t = no; then HAVE_SIGINFO_T=0 fi ]) # Prerequisites of lib/sig-handler.h. AC_DEFUN([gl_PREREQ_SIG_HANDLER_H], [:])