[PATCHv3] implement -Wold-style-cast

[Ondřej Hošek]

Hi everyone,

On Tue, Nov 26, 2013 at 9:37 AM, Alp Toker <alp at nuanti.com> wrote:
> GCC doesn't warn on (void) casts.
>
> The patch should be fixed to handle these cases too:
>
> (void)x; // no warning
> (long)x; // warning
>
> The necessary checks can be done in Parse, but might be slightly easier /
> future-proof handle them in Sema.

Thanks for the feedback; I have updated the patch accordingly.

Cheers,
~~ Ondra
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