Bug 22393 - gcc 2.96 incorrectly compiles clapack
Summary: gcc 2.96 incorrectly compiles clapack
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: gcc
Version: 7.0
Hardware: i386
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Jakub Jelinek
QA Contact: David Lawrence
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2000-12-16 20:47 UTC by Need Real Name
Modified: 2007-04-18 16:30 UTC (History)
0 users

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2004-10-03 22:30:47 UTC
Embargoed:

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Description Need Real Name 2000-12-16 20:47:48 UTC 
When compiled with gcc 2.96 clapack fails its built in tests.
When compiled with 'kgcc' it doesn't fail these tests.

clapack is a numerical library commonly used for high performance
computing. http://www.netlib.org/clapack/
Comment 1 Jakub Jelinek 2000-12-19 16:37:55 UTC 
This looks like a bug in clapack, at least it builds and passes tests just
fine if -fno-strict-aliasing is given to gcc, which most probably means
clapack does some invalid type punning somewhere. I haven't analyzed it
yet where is it doing, so I cannot say this for sure.
Comment 2 Jakub Jelinek 2004-10-03 22:30:47 UTC 
GCC 2.96-RH is now too old.  If you are able to reproduce similar
problems with contemporary GCC (3.4, 4.0), please reopen.
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