mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-12 16:20:06 +00:00
581c785bf3
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
44 lines
1.7 KiB
C
44 lines
1.7 KiB
C
/* Generic implementation of __explicit_bzero_chk.
|
|
Copyright (C) 1991-2022 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/>. */
|
|
|
|
/* This is the generic definition of __explicit_bzero_chk. The
|
|
__explicit_bzero_chk symbol is used as the implementation of
|
|
explicit_bzero throughout glibc. If this file is overriden by an
|
|
architecture, both __explicit_bzero_chk and
|
|
__explicit_bzero_chk_internal have to be defined (the latter not as
|
|
an IFUNC). */
|
|
|
|
#include <string.h>
|
|
|
|
void
|
|
__explicit_bzero_chk (void *dst, size_t len, size_t dstlen)
|
|
{
|
|
/* Inline __memset_chk to avoid a PLT reference to __memset_chk. */
|
|
if (__glibc_unlikely (dstlen < len))
|
|
__chk_fail ();
|
|
memset (dst, '\0', len);
|
|
/* Compiler barrier. */
|
|
asm volatile ("" ::: "memory");
|
|
}
|
|
|
|
/* libc-internal references use the hidden
|
|
__explicit_bzero_chk_internal symbol. This is necessary if
|
|
__explicit_bzero_chk is implemented as an IFUNC because some
|
|
targets do not support hidden references to IFUNC symbols. */
|
|
strong_alias (__explicit_bzero_chk, __explicit_bzero_chk_internal)
|