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Re: gcc 4.0.0 on amd64: problem with -O2?


On May 8, 2005, at 4:17 PM, Harald Dunkel wrote:

Falk Hueffner wrote: 

It doesn't know that. The warning is for the *creation* of the
type-punned pointer, which is still perfectly fine. Gcc is too stupid
to notice whether you actually dereference it.


Yup. There are billions of this constructs in everbodies
and his moms source files. By now (< 4.0.0) this did not
hurt.

That is not true, this has been an issue for people since 3.0.x (and also
for 2.95, not 2.95.1 though). Just we did not do as much optimization as
before as we do now.

-- Pinski

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