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- /* Copyright (C) 2004, 2005, 2007 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
- #ifndef _STRING_H
- # error "Never use <bits/string3.h> directly; include <string.h> instead."
- #endif
-
- __warndecl (__warn_memset_zero_len,
- "memset used with constant zero length parameter; this could be due to transposed parameters");
-
- #ifndef __cplusplus
- /* XXX This is temporarily. We should not redefine any of the symbols
- and instead integrate the error checking into the original
- definitions. */
- # undef memcpy
- # undef memmove
- # undef memset
- # undef strcat
- # undef strcpy
- # undef strncat
- # undef strncpy
- # ifdef __USE_GNU
- # undef mempcpy
- # undef stpcpy
- # endif
- # ifdef __USE_BSD
- # undef bcopy
- # undef bzero
- # endif
- #endif
-
-
- __extern_always_inline void *
- __NTH (memcpy (void *__restrict __dest, __const void *__restrict __src,
- size_t __len))
- {
- return __builtin___memcpy_chk (__dest, __src, __len, __bos0 (__dest));
- }
-
- __extern_always_inline void *
- __NTH (memmove (void *__restrict __dest, __const void *__restrict __src,
- size_t __len))
- {
- return __builtin___memmove_chk (__dest, __src, __len, __bos0 (__dest));
- }
-
- #ifdef __USE_GNU
- __extern_always_inline void *
- __NTH (mempcpy (void *__restrict __dest, __const void *__restrict __src,
- size_t __len))
- {
- return __builtin___mempcpy_chk (__dest, __src, __len, __bos0 (__dest));
- }
- #endif
-
-
- /* The first two tests here help to catch a somewhat common problem
- where the second and third parameter are transposed. This is
- especially problematic if the intended fill value is zero. In this
- case no work is done at all. We detect these problems by referring
- non-existing functions. */
- __extern_always_inline void *
- __NTH (memset (void *__dest, int __ch, size_t __len))
- {
- if (__builtin_constant_p (__len) && __len == 0)
- {
- __warn_memset_zero_len ();
- return __dest;
- }
- return __builtin___memset_chk (__dest, __ch, __len, __bos0 (__dest));
- }
-
- #ifdef __USE_BSD
- __extern_always_inline void
- __NTH (bcopy (__const void *__restrict __src, void *__restrict __dest,
- size_t __len))
- {
- (void) __builtin___memmove_chk (__dest, __src, __len, __bos0 (__dest));
- }
-
- __extern_always_inline void
- __NTH (bzero (void *__dest, size_t __len))
- {
- (void) __builtin___memset_chk (__dest, '\0', __len, __bos0 (__dest));
- }
- #endif
-
- __extern_always_inline char *
- __NTH (strcpy (char *__restrict __dest, __const char *__restrict __src))
- {
- return __builtin___strcpy_chk (__dest, __src, __bos (__dest));
- }
-
- #ifdef __USE_GNU
- __extern_always_inline char *
- __NTH (stpcpy (char *__restrict __dest, __const char *__restrict __src))
- {
- return __builtin___stpcpy_chk (__dest, __src, __bos (__dest));
- }
- #endif
-
-
- __extern_always_inline char *
- __NTH (strncpy (char *__restrict __dest, __const char *__restrict __src,
- size_t __len))
- {
- return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
- }
-
- // XXX We have no corresponding builtin yet.
- extern char *__stpncpy_chk (char *__dest, __const char *__src, size_t __n,
- size_t __destlen) __THROW;
- extern char *__REDIRECT_NTH (__stpncpy_alias, (char *__dest,
- __const char *__src,
- size_t __n), stpncpy);
-
- __extern_always_inline char *
- __NTH (stpncpy (char *__dest, __const char *__src, size_t __n))
- {
- if (__bos (__dest) != (size_t) -1
- && (!__builtin_constant_p (__n) || __n <= __bos (__dest)))
- return __stpncpy_chk (__dest, __src, __n, __bos (__dest));
- return __stpncpy_alias (__dest, __src, __n);
- }
-
-
- __extern_always_inline char *
- __NTH (strcat (char *__restrict __dest, __const char *__restrict __src))
- {
- return __builtin___strcat_chk (__dest, __src, __bos (__dest));
- }
-
-
- __extern_always_inline char *
- __NTH (strncat (char *__restrict __dest, __const char *__restrict __src,
- size_t __len))
- {
- return __builtin___strncat_chk (__dest, __src, __len, __bos (__dest));
- }
-