-/* xmemdup.c -- Duplicate a memory buffer, using xcalloc.
+/* xmemdup.c -- Duplicate a memory buffer, using xmalloc.
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})
+@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
PTR
xmemdup (const PTR input, size_t copy_size, size_t alloc_size)
{
- PTR output = xcalloc (1, alloc_size);
+ PTR output = xmalloc (alloc_size);
+ if (alloc_size > copy_size)
+ memset ((char *) output + copy_size, 0, alloc_size - copy_size);
return (PTR) memcpy (output, input, copy_size);
}