[cfe-commits] [PATCH] Tighten up -Wliteral-conversion

[Matt Beaumont-Gay]

This patch changes -Wliteral-conversion to only warn when the
conversion would result in losing information. Previously, the warning
had a high noise level in code that makes extensive use of literals
like "123e6". Now, it catches exactly the bugs it was originally
intended for, e.g. "const int kFooPercentage = 5e-2" or "sleep(0.1)".

-Matt
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