1 /* Copyright (C) 2004, 2005, 2007, 2009 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 # error "Never use <bits/string3.h> directly; include <string.h> instead."
23 __warndecl (__warn_memset_zero_len
,
24 "memset used with constant zero length parameter; this could be due to transposed parameters");
27 /* XXX This is temporarily. We should not redefine any of the symbols
28 and instead integrate the error checking into the original
48 __extern_always_inline
void *
49 __NTH (memcpy (void *__restrict __dest
, __const
void *__restrict __src
,
52 return __builtin___memcpy_chk (__dest
, __src
, __len
, __bos0 (__dest
));
55 __extern_always_inline
void *
56 __NTH (memmove (void *__restrict __dest
, __const
void *__restrict __src
,
59 return __builtin___memmove_chk (__dest
, __src
, __len
, __bos0 (__dest
));
63 __extern_always_inline
void *
64 __NTH (mempcpy (void *__restrict __dest
, __const
void *__restrict __src
,
67 return __builtin___mempcpy_chk (__dest
, __src
, __len
, __bos0 (__dest
));
72 /* The first two tests here help to catch a somewhat common problem
73 where the second and third parameter are transposed. This is
74 especially problematic if the intended fill value is zero. In this
75 case no work is done at all. We detect these problems by referring
76 non-existing functions. */
77 __extern_always_inline
void *
78 __NTH (memset (void *__dest
, int __ch
, size_t __len
))
80 if (__builtin_constant_p (__len
) && __len
== 0
81 && (!__builtin_constant_p (__ch
) || __ch
!= 0))
83 __warn_memset_zero_len ();
86 return __builtin___memset_chk (__dest
, __ch
, __len
, __bos0 (__dest
));
90 __extern_always_inline
void
91 __NTH (bcopy (__const
void *__restrict __src
, void *__restrict __dest
,
94 (void) __builtin___memmove_chk (__dest
, __src
, __len
, __bos0 (__dest
));
97 __extern_always_inline
void
98 __NTH (bzero (void *__dest
, size_t __len
))
100 (void) __builtin___memset_chk (__dest
, '\0', __len
, __bos0 (__dest
));
104 __extern_always_inline
char *
105 __NTH (strcpy (char *__restrict __dest
, __const
char *__restrict __src
))
107 return __builtin___strcpy_chk (__dest
, __src
, __bos (__dest
));
111 __extern_always_inline
char *
112 __NTH (stpcpy (char *__restrict __dest
, __const
char *__restrict __src
))
114 return __builtin___stpcpy_chk (__dest
, __src
, __bos (__dest
));
119 __extern_always_inline
char *
120 __NTH (strncpy (char *__restrict __dest
, __const
char *__restrict __src
,
123 return __builtin___strncpy_chk (__dest
, __src
, __len
, __bos (__dest
));
126 // XXX We have no corresponding builtin yet.
127 extern char *__stpncpy_chk (char *__dest
, __const
char *__src
, size_t __n
,
128 size_t __destlen
) __THROW
;
129 extern char *__REDIRECT_NTH (__stpncpy_alias
, (char *__dest
,
131 size_t __n
), stpncpy
);
133 __extern_always_inline
char *
134 __NTH (stpncpy (char *__dest
, __const
char *__src
, size_t __n
))
136 if (__bos (__dest
) != (size_t) -1
137 && (!__builtin_constant_p (__n
) || __n
<= __bos (__dest
)))
138 return __stpncpy_chk (__dest
, __src
, __n
, __bos (__dest
));
139 return __stpncpy_alias (__dest
, __src
, __n
);
143 __extern_always_inline
char *
144 __NTH (strcat (char *__restrict __dest
, __const
char *__restrict __src
))
146 return __builtin___strcat_chk (__dest
, __src
, __bos (__dest
));
150 __extern_always_inline
char *
151 __NTH (strncat (char *__restrict __dest
, __const
char *__restrict __src
,
154 return __builtin___strncat_chk (__dest
, __src
, __len
, __bos (__dest
));