Mercurial > hg > CbC > CbC_gcc
comparison libiberty/xmemdup.c @ 0:a06113de4d67
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author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
parents | |
children | f6334be47118 |
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1 /* xmemdup.c -- Duplicate a memory buffer, using xcalloc. | |
2 This trivial function is in the public domain. | |
3 Jeff Garzik, September 1999. */ | |
4 | |
5 /* | |
6 | |
7 @deftypefn Replacement void* xmemdup (void *@var{input}, size_t @var{copy_size}, size_t @var{alloc_size}) | |
8 | |
9 Duplicates a region of memory without fail. First, @var{alloc_size} bytes | |
10 are allocated, then @var{copy_size} bytes from @var{input} are copied into | |
11 it, and the new memory is returned. If fewer bytes are copied than were | |
12 allocated, the remaining memory is zeroed. | |
13 | |
14 @end deftypefn | |
15 | |
16 */ | |
17 | |
18 #ifdef HAVE_CONFIG_H | |
19 #include "config.h" | |
20 #endif | |
21 #include "ansidecl.h" | |
22 #include "libiberty.h" | |
23 | |
24 #include <sys/types.h> /* For size_t. */ | |
25 #ifdef HAVE_STRING_H | |
26 #include <string.h> | |
27 #else | |
28 # ifdef HAVE_STRINGS_H | |
29 # include <strings.h> | |
30 # endif | |
31 #endif | |
32 | |
33 PTR | |
34 xmemdup (const PTR input, size_t copy_size, size_t alloc_size) | |
35 { | |
36 PTR output = xcalloc (1, alloc_size); | |
37 return (PTR) memcpy (output, input, copy_size); | |
38 } |