add copyrights

1 files changed, 13 insertions, 1 deletions

diff --git a/src/util.h b/src/util.h
index d0f0815..188528c 100644
--- a/src/util.h
+++ b/src/util.h
@@ -1,4 +1,16 @@
-
+// Copyright 2011 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
 
 // Dump a backtrace to stderr.
 // |skip_frames| is how many frames to skip;