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Re: Another GLIBC build error with GCC6


On Tue, Aug 18, 2015 at 10:13:00AM -0700, Steve Ellcey wrote:
> On Tue, 2015-08-18 at 10:04 -0700, Paul Eggert wrote:
> > Steve Ellcey wrote:
> > > I put the old and new
> > > code segments in a small test program and compiled it on MIPS (32 and 64
> > > bit modes) and verified that the generated code was identical for both
> > > versions in that setting.
> > 
> > That's good enough for me.  I installed the patch.
> > 
> > Wasn't there a similar problem with DT_EXTRATAGIDX?  See, for example:
> > 
> > https://sourceware.org/ml/libc-alpha/2015-07/msg00742.html
> 
> For some reason, I am no longer seeing this problem.  I don't see any
> changes in GLIBC or GCC that look like they would have made this problem
> go away so I am not sure what is going on.

If this is about shift overflow warnings:
I've changed the -Wshift-overflow warning to not warn when left-shifting 1
into the sign bit.  It caused way too much noise.  If you still want to see
even those, use -Wshift-overflow=2.
<https://gcc.gnu.org/ml/gcc-patches/2015-08/msg00617.html>

	Marek


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