[Bug middle-end/29574] Gcc gives invalid warning about unitialized variable

["pinskia at earth dot geop dot uc dot edu" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #9 from pinskia at earth dot geop dot uc dot edu  2006-10-23 21:52 -------
Subject: Re:  Gcc gives invalid warning about unitialized variable

> 
> 
> 
> ------- Comment #8 from mbligh at mbligh dot org  2006-10-23 21:50 -------
> > Initialize the variable and forget about inefficiency.  Again this is fixed for
> > 4.2.0, the warning is only because __builtin_expect gets in the way of figuring
> > out if the variable is used uninitialized, nothing more.
> 
> I understand the __builtin_expect case is fixed in 4.2, and am fine with that,
> but I was talking about the ones that aren't inlined, and don't use
> builtin_expect. Does gcc 4.2 walk through functions as well, or will it always
> produce an invalid warning there?

No, for ones which are not inlined, GCC does not look through other functions
to
check for the warning.

Thanks,
Andrew Pinski


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29574