tree 978877ea0582f1e1f46fe48664571dab725a577f
parent 80c3ea52ed1caec16e5c6c6beecd434225afbd97
author DennyZhang <denny@unitedstack.com> 1382479652 -0500
committer DennyZhang <denny@unitedstack.com> 1382479938 -0500

add assertions for blind grep

blind grep is error-prone.
Add assertions for errors we can not handle

Change-Id: Ibe19085545ecc848498506e8b8ee14e71825b273