Mercurial > gnulib
view lib/explicit_bzero.c @ 40231:9b3c79fdfe0b
strtod: fix clash with strtold
Problem reported for RHEL 5 by Jesse Caldwell (Bug#34817).
* lib/strtod.c (compute_minus_zero, minus_zero):
Simplify by remving the macro / external variable,
and having just a function. User changed. This avoids
the need for an external variable that might clash.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Mon, 11 Mar 2019 16:40:29 -0700 |
parents | b06060465f09 |
children |
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/* Erasure of sensitive data, generic implementation. Copyright (C) 2016-2019 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ /* An assembler implementation of explicit_bzero can be created as an assembler alias of an optimized bzero implementation. Architecture-specific implementations also need to define __explicit_bzero_chk. */ #if !_LIBC # include <config.h> #endif #include <string.h> #if _LIBC /* glibc-internal users use __explicit_bzero_chk, and explicit_bzero redirects to that. */ # undef explicit_bzero #endif /* Set LEN bytes of S to 0. The compiler will not delete a call to this function, even if S is dead after the call. */ void explicit_bzero (void *s, size_t len) { #ifdef HAVE_EXPLICIT_MEMSET explicit_memset (s, 0, len); #else memset (s, '\0', len); # if defined __GNUC__ && !defined __clang__ /* Compiler barrier. */ asm volatile ("" ::: "memory"); # endif #endif }