1 files changed, 39 insertions, 0 deletions
diff --git a/libiberty/xmemdup.c b/libiberty/xmemdup.c
new file mode 100644
index 000000000..aa56f0bf5
--- /dev/null
+++ b/libiberty/xmemdup.c
@@ -0,0 +1,39 @@
+/* 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
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include "ansidecl.h"
+#include "libiberty.h"
+
+#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 (const PTR input, size_t copy_size, size_t alloc_size)
+{
+  PTR output = xcalloc (1, alloc_size);
+  return (PTR) memcpy (output, input, copy_size);
+}