Bug#569436: Bug#571572: Bug#569436: blas: zgesvd seems to give incorrect results

[Kumar Appaiah]

clone 571572 -1
reassign -1 gcc-4.4 4.4.3-3
retitle -1 errnoenous code generated with -ftree-vectorize
forwarded -1 http://gcc.gnu.org/PR43251
block 571572 by -1
thanks

Dear Daniel,

On Wed, Mar 03, 2010 at 09:11:29PM +0100, Denis Barbier wrote:
> On 2010/3/3 Kumar Appaiah wrote:
> > Dear Denis,
> >
> > On Wed, Mar 03, 2010 at 11:41:50AM +0100, Denis Barbier wrote:
> >> Hi,
> >>
> >> For the record, thanks to the GCC compile farm, I determined that this
> >> bug has been fixed in gcc trunk by
> >>    http://gcc.gnu.org/viewcvs?view=revision&revision=145494
> >> Unfortunately this is a merge from a branch (alias-improvements) which
> >> is not mirrored by git, so I had not been able to run git-bisect on it
> >> to find the atomic commit.  And since this portion of code has been
> >> heavily modified, I doubt that it could be backported to gcc 4.4.  I
> >> do not know what can be done now.
> >
> > I think we can still file a bug report. Could you please test the
> > attach test case, and let me know if it is reproducible?
> [...]
> 
> Waow, you did  it, congratulations.  I can indeed reproduce this bug
> with your small testcase.

Wonderful! I've reported the bug to upstream gcc, and have created a
new bug against the Debian gcc and blocked this bug by it.

Hope this helps. Thanks for pointing me in the right direction.

Kumar
-- 
If you shed tears when you miss the sun, you also miss the stars.
- Rabindranath Tagore (Stray Birds, 1916)