1 files changed, 21 insertions, 0 deletions
diff --git a/libgo/runtime/go-map-len.c b/libgo/runtime/go-map-len.c
new file mode 100644
index 00000000000..75b7473390d
--- /dev/null
+++ b/libgo/runtime/go-map-len.c
@@ -0,0 +1,21 @@
+/* go-map-len.c -- return the length of a map.
+
+   Copyright 2009 The Go Authors. All rights reserved.
+   Use of this source code is governed by a BSD-style
+   license that can be found in the LICENSE file.  */
+
+#include <stddef.h>
+
+#include "map.h"
+
+/* Return the length of a map.  This could be done inline, of course,
+   but I'm doing it as a function for now to make it easy to chang the
+   map structure.  */
+
+size_t
+__go_map_len (struct __go_map *map)
+{
+  if (map == NULL)
+    return 0;
+  return map->__element_count;
+}