tree be3818538674d7b2bf8949426e69e7e4365b3168
parent c741557f8f77751e253ad5a27b6e3f70391aff08
author David Symonds <dsymonds@golang.org> 1407784260 +1000
committer David Symonds <dsymonds@golang.org> 1415154771 +1100

Pad thread ID in log header to 7 spaces, to match C++ format.

Add check in TestHeader to detect padding mismatch.