-Og bug?

Ian Lance Taylor iant@google.com
Tue Jan 28 21:24:00 GMT 2014


`On Tue, Jan 28, 2014 at 1:10 PM, Thomas Schwinge
<thomas@codesourcery.com> wrote:
>
> OK, I agree to all of that, but I'd assume that if the compiler doesn't
> do such value tracking to see whether all cases have been covered, it
> also souldn't emit such possibly unitialized warning, to not cause false
> positive warnings.

The -Wuninitialized warning is full of false positives.

It is the canonical example of why warnings that are driven by
optimizations are difficult for users in practice.

Ian



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