diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0e9738198f34..c2fa9bbb5db1 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2011-05-30  Ian Lance Taylor  <iant@google.com>
+
+	* godump.c (go_format_type): Correct length of name added to
+	obstack for anonymous field.
+
 2011-05-30  Kaz Kojima  <kkojima@gcc.gnu.org>
 
 	PR target/49186
diff --git a/gcc/godump.c b/gcc/godump.c
index e0d50b5d1b06..3f78eead2794 100644
--- a/gcc/godump.c
+++ b/gcc/godump.c
@@ -700,7 +700,7 @@ go_format_type (struct godump_container *container, tree type,
 	      {
 		char buf[100];
 
-		obstack_grow (ob, "Godump_", 2);
+		obstack_grow (ob, "Godump_", 7);
 		snprintf (buf, sizeof buf, "%d", i);
 		obstack_grow (ob, buf, strlen (buf));
 		i++;