view libiberty/xmemdup.c @ 67:f6334be47118

update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
author nobuyasu <>
date Tue, 22 Mar 2011 17:18:12 +0900
parents a06113de4d67
children 04ced10e8804
line wrap: on
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/* xmemdup.c -- Duplicate a memory buffer, using xcalloc.
   This trivial function is in the public domain.
   Jeff Garzik, September 1999.  */


@deftypefn Replacement void* xmemdup (void *@var{input}, @
  size_t @var{copy_size}, size_t @var{alloc_size})

Duplicates a region of memory without fail.  First, @var{alloc_size} bytes
are allocated, then @var{copy_size} bytes from @var{input} are copied into
it, and the new memory is returned.  If fewer bytes are copied than were
allocated, the remaining memory is zeroed.

@end deftypefn


#include "config.h"
#include "ansidecl.h"
#include "libiberty.h"

#include <sys/types.h> /* For size_t. */
#include <string.h>
#  include <strings.h>
# endif

xmemdup (const PTR input, size_t copy_size, size_t alloc_size)
  PTR output = xcalloc (1, alloc_size);
  return (PTR) memcpy (output, input, copy_size);