[cfe-commits] Patch: Warn on logical operations with constants

[Richard Trieu]

The old warning that checked for logical operators with constants did not
treat 1 and 0 as it would for other constants.  Changed the warning so that
if a bool type exists, 1 and 0 will trigger the warning.

Patch is attached and available through Code Review:
http://codereview.appspot.com/4444068/
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