Re: GCC 4.1.2 Status Report

[Richard Guenther <rguenther at suse dot de>]

On Sun, 4 Feb 2007, Mark Mitchell wrote:

> [Danny, Richard G., please see below.]
> 
> Thanks to all who have helped tested GCC 4.1.2 RC1 over the last week.
> 
> I've reviewed the list traffic and Bugzilla.  Sadly, there are a fair
> number of bugs.  Fortunately, most seem not to be new in 4.1.2, and
> therefore I don't consider them showstoppers.
> 
> The following issues seem to be the 4.1.1 regressions:
> 
>   http://gcc.gnu.org/wiki/GCC_4.1.2_Status
> 
> PR 28743 is only an ICE-on-invalid, so I'm not terribly concerned.
> 
> Daniel, 30088 is another aliasing problem.  IIIRC, you've in the past
> said that these were (a) hard to fix, and (b) uncommon.  Is this the
> same problem?  If so, do you still feel that (b) is true?  I'm
> suspicious, and I am afraid that we need to look for a conservative hack.

PR30708 popped up as well and maybe related (and easier to analyze as
it's C-only).  Both don't seem to be regressions on the branch, though.

> Richard, 30370 has a patch, but David is concerned that we test it on
> older GNU/Linux distributions, and suggested SLES9.  Would you be able
> to test that?

The patch bootstrapped and tested ok on SLES9-ppc.

> Richard, 29487 is an issue raised on HP-UX 10.10, but I'm concerned that
> it may reflect a bad decision about optimization of C++ functions that
> don't throw exceptions.  Would you please comment?

I believe reverting this patch on the branch is the only option (to
fixing the HP-UX assembler).  I don't know of any real-life issue
it fixes.

Richard.

-- 
Richard Guenther <rguenther@suse.de>
Novell / SUSE Labs