[PATCH] don't diagnose -Wchar-subscript for safe char literal

[Richard Smith]

On Wed, Apr 23, 2014 at 11:08 AM, Daniel Marjamäki <
Daniel.Marjamaki at evidente.se> wrote:
>
> Sorry.. I changed my mind and in my humble opinion, I do think that
> foo['\xFF'] deserves a warning. However I am skeptic about foo[-1].


Seems my message was not clear enough. I also think we should warn on
foo['\xff'] but not on foo[-1].
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