tree 686293ed854ac1f8d21cc259350450f85bf5ffdc
parent aa7d677661213b4116adc5fac88b8c37a1490010
author Yunlian Jiang <yunlian@google.com> 1421793373 -0800
committer ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> 1421868426 +0000

libchromeos: get rid of unused-local-typedef warning.

This uses static_assert() to issue a meaningful compile-time error.
To prevent this from happening for all references to RawCast, use sizeof(T)
to make static_assert depend on type T and therefore prevent binding it
unconditionally until the actual RawCast<T> instantiation happens.

BUG=chromium:450380
TEST=builds with new clang.

Change-Id: I6aaf3e5e69b239288400accfee50e5adfd54c200
Reviewed-on: https://chromium-review.googlesource.com/242047
Reviewed-by: Alex Vakulenko <avakulenko@chromium.org>
Tested-by: Yunlian Jiang <yunlian@chromium.org>
Commit-Queue: Yunlian Jiang <yunlian@chromium.org>