[Bug libstdc++/31836] [4.3 Regression] FAIL: 27_io/basic_istream/extractors_arithmetic/char/12.cc execution test

["dave at hiauly1 dot hia dot nrc dot ca" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #15 from dave at hiauly1 dot hia dot nrc dot ca  2007-05-07 00:51 -------
Subject: Re:  [4.3 Regression] FAIL:
27_io/basic_istream/extractors_arithmetic/char/12.cc execution test

> I told you that at the beginning of this thread, right? Then, you reported that
> the portion of 12.cc about *short* type is failing, and that has nothing to do
> with that change, doesn't make any sense frankly. Therefore, either something
> changed in the memory layout, a latent miscompilation is triggered, or
> something else, definitely, nothing I can fix with the info I have from you.

I understand that.  There's only two changes in the interval that are
significant (r123630 and r123635 -- r123636 was reverted).  If it's
a latent miscompilation, I still want to know which change exposed
the problem.

The test is failing on both 32 and 64-bit hpux, but not
on linux.  The code generated for the linux target is generally
very similar to 32-bit hpux target and usually miscompilations
appear on both.

Dave


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31836