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458d6339b7
The new check-installed-headers rule check now complains with C++ comment from string3.h with: ../string/bits/string3.h:129:1: error: C++ style comments are not allowed in ISO C90 // XXX We have no corresponding builtin yet. Let use old C style comment to make compiler happy in old modes. Tested on x86_64. * string/bits/string3.h: Remove C++ style comments.
158 lines
4.5 KiB
C
158 lines
4.5 KiB
C
/* Copyright (C) 2004-2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _STRING_H
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# error "Never use <bits/string3.h> directly; include <string.h> instead."
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#endif
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#if !__GNUC_PREREQ (5,0)
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__warndecl (__warn_memset_zero_len,
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"memset used with constant zero length parameter; this could be due to transposed parameters");
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#endif
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#ifndef __cplusplus
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/* XXX This is temporarily. We should not redefine any of the symbols
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and instead integrate the error checking into the original
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definitions. */
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# undef memcpy
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# undef memmove
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# undef memset
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# undef strcat
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# undef strcpy
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# undef strncat
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# undef strncpy
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# ifdef __USE_GNU
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# undef mempcpy
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# undef stpcpy
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# endif
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# ifdef __USE_MISC
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# undef bcopy
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# undef bzero
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# endif
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#endif
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__fortify_function void *
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__NTH (memcpy (void *__restrict __dest, const void *__restrict __src,
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size_t __len))
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{
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return __builtin___memcpy_chk (__dest, __src, __len, __bos0 (__dest));
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}
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__fortify_function void *
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__NTH (memmove (void *__dest, const void *__src, size_t __len))
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{
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return __builtin___memmove_chk (__dest, __src, __len, __bos0 (__dest));
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}
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#ifdef __USE_GNU
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__fortify_function void *
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__NTH (mempcpy (void *__restrict __dest, const void *__restrict __src,
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size_t __len))
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{
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return __builtin___mempcpy_chk (__dest, __src, __len, __bos0 (__dest));
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}
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#endif
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/* The first two tests here help to catch a somewhat common problem
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where the second and third parameter are transposed. This is
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especially problematic if the intended fill value is zero. In this
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case no work is done at all. We detect these problems by referring
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non-existing functions. */
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__fortify_function void *
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__NTH (memset (void *__dest, int __ch, size_t __len))
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{
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/* GCC-5.0 and newer implements these checks in the compiler, so we don't
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need them here. */
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#if !__GNUC_PREREQ (5,0)
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if (__builtin_constant_p (__len) && __len == 0
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&& (!__builtin_constant_p (__ch) || __ch != 0))
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{
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__warn_memset_zero_len ();
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return __dest;
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}
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#endif
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return __builtin___memset_chk (__dest, __ch, __len, __bos0 (__dest));
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}
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#ifdef __USE_MISC
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__fortify_function void
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__NTH (bcopy (const void *__src, void *__dest, size_t __len))
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{
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(void) __builtin___memmove_chk (__dest, __src, __len, __bos0 (__dest));
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}
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__fortify_function void
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__NTH (bzero (void *__dest, size_t __len))
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{
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(void) __builtin___memset_chk (__dest, '\0', __len, __bos0 (__dest));
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}
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#endif
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__fortify_function char *
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__NTH (strcpy (char *__restrict __dest, const char *__restrict __src))
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{
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return __builtin___strcpy_chk (__dest, __src, __bos (__dest));
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}
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#ifdef __USE_GNU
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__fortify_function char *
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__NTH (stpcpy (char *__restrict __dest, const char *__restrict __src))
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{
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return __builtin___stpcpy_chk (__dest, __src, __bos (__dest));
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}
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#endif
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__fortify_function char *
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__NTH (strncpy (char *__restrict __dest, const char *__restrict __src,
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size_t __len))
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{
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return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
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}
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/* XXX We have no corresponding builtin yet. */
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extern char *__stpncpy_chk (char *__dest, const char *__src, size_t __n,
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size_t __destlen) __THROW;
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extern char *__REDIRECT_NTH (__stpncpy_alias, (char *__dest, const char *__src,
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size_t __n), stpncpy);
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__fortify_function char *
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__NTH (stpncpy (char *__dest, const char *__src, size_t __n))
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{
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if (__bos (__dest) != (size_t) -1
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&& (!__builtin_constant_p (__n) || __n > __bos (__dest)))
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return __stpncpy_chk (__dest, __src, __n, __bos (__dest));
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return __stpncpy_alias (__dest, __src, __n);
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}
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__fortify_function char *
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__NTH (strcat (char *__restrict __dest, const char *__restrict __src))
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{
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return __builtin___strcat_chk (__dest, __src, __bos (__dest));
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}
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__fortify_function char *
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__NTH (strncat (char *__restrict __dest, const char *__restrict __src,
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size_t __len))
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{
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return __builtin___strncat_chk (__dest, __src, __len, __bos (__dest));
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}
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