PR testsuite/43758

[pf3gnuchains/gcc-fork.git] / libiberty / xmemdup.c

diff --git a/libiberty/xmemdup.c b/libiberty/xmemdup.c
index fdb17a5..d483116 100644 (file)
--- a/libiberty/xmemdup.c
+++ b/libiberty/xmemdup.c
@@ -2,6 +2,19 @@
    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
+
+*/
+
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
@@ -11,15 +24,15 @@
 #include <sys/types.h> /* For size_t. */
 #ifdef HAVE_STRING_H
 #include <string.h>
+#else
+# ifdef HAVE_STRINGS_H
+#  include <strings.h>
+# endif
 #endif
 
 PTR
-xmemdup (input, copy_size, alloc_size)
-  const PTR input;
-  size_t copy_size;
-  size_t alloc_size;
+xmemdup (const PTR input, size_t copy_size, size_t alloc_size)
 {
   PTR output = xcalloc (1, alloc_size);
-  memcpy (output, input, copy_size);
-  return output;
+  return (PTR) memcpy (output, input, copy_size);
 }