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