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}, @
8  size_t @var{copy_size}, size_t @var{alloc_size})
9
10Duplicates a region of memory without fail.  First, @var{alloc_size} bytes
11are allocated, then @var{copy_size} bytes from @var{input} are copied into
12it, and the new memory is returned.  If fewer bytes are copied than were
13allocated, the remaining memory is zeroed.
14
15@end deftypefn
16
17*/
18
19#ifdef HAVE_CONFIG_H
20#include "config.h"
21#endif
22#include "ansidecl.h"
23#include "libiberty.h"
24
25#include <sys/types.h> /* For size_t. */
26#ifdef HAVE_STRING_H
27#include <string.h>
28#else
29# ifdef HAVE_STRINGS_H
30#  include <strings.h>
31# endif
32#endif
33
34PTR
35xmemdup (const PTR input, size_t copy_size, size_t alloc_size)
36{
37  PTR output = xcalloc (1, alloc_size);
38  return (PTR) memcpy (output, input, copy_size);
39}
40