]>
git.ipfire.org Git - thirdparty/glibc.git/blob - string/bits/string3.h
1 /* Copyright (C) 2004, 2005 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 /* XXX This is temporarily. We should not redefine any of the symbols
24 and instead integrate the error checking into the original
43 #define memcpy(dest, src, len) \
44 ((__bos0 (dest) != (size_t) -1) \
45 ? __builtin___memcpy_chk (dest, src, len, __bos0 (dest)) \
46 : __memcpy_ichk (dest, src, len))
47 static __always_inline
void *
48 __memcpy_ichk (void *__restrict __dest
, const void *__restrict __src
,
51 return __builtin___memcpy_chk (__dest
, __src
, __len
, __bos0 (__dest
));
55 #define memmove(dest, src, len) \
56 ((__bos0 (dest) != (size_t) -1) \
57 ? __builtin___memmove_chk (dest, src, len, __bos0 (dest)) \
58 : __memmove_ichk (dest, src, len))
59 static __always_inline
void *
60 __memmove_ichk (void *__dest
, const void *__src
, size_t __len
)
62 return __builtin___memmove_chk (__dest
, __src
, __len
, __bos0 (__dest
));
67 # define mempcpy(dest, src, len) \
68 ((__bos0 (dest) != (size_t) -1) \
69 ? __builtin___mempcpy_chk (dest, src, len, __bos0 (dest)) \
70 : __mempcpy_ichk (dest, src, len))
71 static __always_inline
void *
72 __mempcpy_ichk (void *__restrict __dest
, const void *__restrict __src
,
75 return __builtin___mempcpy_chk (__dest
, __src
, __len
, __bos0 (__dest
));
80 /* The first two tests here help to catch a somewhat common problem
81 where the second and third parameter are transposed. This is
82 especially problematic if the intended fill value is zero. In this
83 case no work is done at all. We detect these problems by referring
84 non-existing functions. */
85 __warndecl (__warn_memset_zero_len
,
86 "memset used with constant zero length parameter; this could be due to transposed parameters");
87 #define memset(dest, ch, len) \
88 (__builtin_constant_p (len) && (len) == 0 \
89 ? (__warn_memset_zero_len (), (void) (ch), (void) (len), (void *) (dest)) \
90 : ((__bos0 (dest) != (size_t) -1) \
91 ? __builtin___memset_chk (dest, ch, len, __bos0 (dest)) \
92 : __memset_ichk (dest, ch, len)))
93 static __always_inline
void *
94 __memset_ichk (void *__dest
, int __ch
, size_t __len
)
96 return __builtin___memset_chk (__dest
, __ch
, __len
, __bos0 (__dest
));
100 # define bcopy(src, dest, len) ((void) \
101 ((__bos0 (dest) != (size_t) -1) \
102 ? __builtin___memmove_chk (dest, src, len, __bos0 (dest)) \
103 : __memmove_ichk (dest, src, len)))
104 # define bzero(dest, len) ((void) \
105 ((__bos0 (dest) != (size_t) -1) \
106 ? __builtin___memset_chk (dest, '\0', len, __bos0 (dest)) \
107 : __memset_ichk (dest, '\0', len)))
111 #define strcpy(dest, src) \
112 ((__bos (dest) != (size_t) -1) \
113 ? __builtin___strcpy_chk (dest, src, __bos (dest)) \
114 : __strcpy_ichk (dest, src))
115 static __always_inline
char *
116 __strcpy_ichk (char *__restrict __dest
, const char *__restrict __src
)
118 return __builtin___strcpy_chk (__dest
, __src
, __bos (__dest
));
123 # define stpcpy(dest, src) \
124 ((__bos (dest) != (size_t) -1) \
125 ? __builtin___stpcpy_chk (dest, src, __bos (dest)) \
126 : __stpcpy_ichk (dest, src))
127 static __always_inline
char *
128 __stpcpy_ichk (char *__restrict __dest
, const char *__restrict __src
)
130 return __builtin___stpcpy_chk (__dest
, __src
, __bos (__dest
));
135 #define strncpy(dest, src, len) \
136 ((__bos (dest) != (size_t) -1) \
137 ? __builtin___strncpy_chk (dest, src, len, __bos (dest)) \
138 : __strncpy_ichk (dest, src, len))
139 static __always_inline
char *
140 __strncpy_ichk (char *__restrict __dest
, const char *__restrict __src
,
143 return __builtin___strncpy_chk (__dest
, __src
, __len
, __bos (__dest
));
147 // XXX We have no corresponding builtin yet.
148 extern char *__stpncpy_chk (char *__dest
, const char *__src
, size_t __n
,
149 size_t __destlen
) __THROW
;
150 extern char *__REDIRECT (__stpncpy_alias
, (char *__dest
, const char *__src
,
151 size_t __n
), stpncpy
)__THROW
;
153 extern __always_inline
char *
154 stpncpy (char *__dest
, const char *__src
, size_t __n
)
156 if (__bos (__dest
) != (size_t) -1
157 && (!__builtin_constant_p (__n
) || __n
<= __bos (__dest
)))
158 return __stpncpy_chk (__dest
, __src
, __n
, __bos (__dest
));
159 return __stpncpy_alias (__dest
, __src
, __n
);
163 #define strcat(dest, src) \
164 ((__bos (dest) != (size_t) -1) \
165 ? __builtin___strcat_chk (dest, src, __bos (dest)) \
166 : __strcat_ichk (dest, src))
167 static __always_inline
char *
168 __strcat_ichk (char *__restrict __dest
, const char *__restrict __src
)
170 return __builtin___strcat_chk (__dest
, __src
, __bos (__dest
));
174 #define strncat(dest, src, len) \
175 ((__bos (dest) != (size_t) -1) \
176 ? __builtin___strncat_chk (dest, src, len, __bos (dest)) \
177 : __strncat_ichk (dest, src, len))
178 static __always_inline
char *
179 __strncat_ichk (char *__restrict __dest
, const char *__restrict __src
,
182 return __builtin___strncat_chk (__dest
, __src
, __len
, __bos (__dest
));