File Coverage

/usr/include/x86_64-linux-gnu/bits/string3.h
Criterion Covered Total %
statement 1 1 100.0
branch n/a
condition n/a
subroutine n/a
total 1 1 100.0


line stmt bran cond sub time code
1           /* Copyright (C) 2004, 2005, 2007, 2009, 2010 Free Software Foundation, Inc.
2           This file is part of the GNU C Library.
3            
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.
8            
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.
13            
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
17           02111-1307 USA. */
18            
19           #ifndef _STRING_H
20           # error "Never use directly; include instead."
21           #endif
22            
23           __warndecl (__warn_memset_zero_len,
24           "memset used with constant zero length parameter; this could be due to transposed parameters");
25            
26           #ifndef __cplusplus
27           /* XXX This is temporarily. We should not redefine any of the symbols
28           and instead integrate the error checking into the original
29           definitions. */
30           # undef memcpy
31           # undef memmove
32           # undef memset
33           # undef strcat
34           # undef strcpy
35           # undef strncat
36           # undef strncpy
37           # ifdef __USE_GNU
38           # undef mempcpy
39           # undef stpcpy
40           # endif
41           # ifdef __USE_BSD
42           # undef bcopy
43           # undef bzero
44           # endif
45           #endif
46            
47            
48           __extern_always_inline void *
49           __NTH (memcpy (void *__restrict __dest, __const void *__restrict __src,
50           size_t __len))
51           {
52           return __builtin___memcpy_chk (__dest, __src, __len, __bos0 (__dest));
53           }
54            
55           __extern_always_inline void *
56           __NTH (memmove (void *__dest, __const void *__src, size_t __len))
57           {
58           return __builtin___memmove_chk (__dest, __src, __len, __bos0 (__dest));
59           }
60            
61           #ifdef __USE_GNU
62           __extern_always_inline void *
63           __NTH (mempcpy (void *__restrict __dest, __const void *__restrict __src,
64           size_t __len))
65           {
66           return __builtin___mempcpy_chk (__dest, __src, __len, __bos0 (__dest));
67           }
68           #endif
69            
70            
71           /* The first two tests here help to catch a somewhat common problem
72           where the second and third parameter are transposed. This is
73           especially problematic if the intended fill value is zero. In this
74           case no work is done at all. We detect these problems by referring
75           non-existing functions. */
76           __extern_always_inline void *
77           __NTH (memset (void *__dest, int __ch, size_t __len))
78           {
79           if (__builtin_constant_p (__len) && __len == 0
80           && (!__builtin_constant_p (__ch) || __ch != 0))
81           {
82           __warn_memset_zero_len ();
83           return __dest;
84           }
85           return __builtin___memset_chk (__dest, __ch, __len, __bos0 (__dest));
86           }
87            
88           #ifdef __USE_BSD
89           __extern_always_inline void
90           __NTH (bcopy (__const void *__src, void *__dest, size_t __len))
91           {
92           (void) __builtin___memmove_chk (__dest, __src, __len, __bos0 (__dest));
93           }
94            
95           __extern_always_inline void
96           __NTH (bzero (void *__dest, size_t __len))
97           {
98           (void) __builtin___memset_chk (__dest, '\0', __len, __bos0 (__dest));
99           }
100           #endif
101            
102           __extern_always_inline char *
103           __NTH (strcpy (char *__restrict __dest, __const char *__restrict __src))
104           {
105 9632319         return __builtin___strcpy_chk (__dest, __src, __bos (__dest));
106           }
107            
108           #ifdef __USE_GNU
109           __extern_always_inline char *
110           __NTH (stpcpy (char *__restrict __dest, __const char *__restrict __src))
111           {
112           return __builtin___stpcpy_chk (__dest, __src, __bos (__dest));
113           }
114           #endif
115            
116            
117           __extern_always_inline char *
118           __NTH (strncpy (char *__restrict __dest, __const char *__restrict __src,
119           size_t __len))
120           {
121           return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
122           }
123            
124           // XXX We have no corresponding builtin yet.
125           extern char *__stpncpy_chk (char *__dest, __const char *__src, size_t __n,
126           size_t __destlen) __THROW;
127           extern char *__REDIRECT_NTH (__stpncpy_alias, (char *__dest,
128           __const char *__src,
129           size_t __n), stpncpy);
130            
131           __extern_always_inline char *
132           __NTH (stpncpy (char *__dest, __const char *__src, size_t __n))
133           {
134           if (__bos (__dest) != (size_t) -1
135           && (!__builtin_constant_p (__n) || __n <= __bos (__dest)))
136           return __stpncpy_chk (__dest, __src, __n, __bos (__dest));
137           return __stpncpy_alias (__dest, __src, __n);
138           }
139            
140            
141           __extern_always_inline char *
142           __NTH (strcat (char *__restrict __dest, __const char *__restrict __src))
143           {
144           return __builtin___strcat_chk (__dest, __src, __bos (__dest));
145           }
146            
147            
148           __extern_always_inline char *
149           __NTH (strncat (char *__restrict __dest, __const char *__restrict __src,
150           size_t __len))
151           {
152           return __builtin___strncat_chk (__dest, __src, __len, __bos (__dest));
153           }