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Re: gcc-4.3 optimizer bugs?



Callum Lerwick wrote:
On Wed, 2008-02-27 at 05:45 -0500, Neal Becker wrote:
We are trying to track down a numerical problem with unuran that occurs on
gcc-4.3.  I know that gcc now has a very extensive test suite, and bugs are
not common.  I'm just wondering, are others finding similar problems with
gcc-4.3?

We are working on preparing a bug report.  The symptoms are:
1) Problem disappears if -O0
2) Problem disappears if a printf is added
3) valgrind is silent

Aliasing bug? See if -fno-strict-aliasing works around it.


Fixes qhull.

--
Orion Poplawski
Technical Manager                     303-415-9701 x222
NWRA/CoRA Division                    FAX: 303-415-9702
3380 Mitchell Lane                  orion cora nwra com
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