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Bug 22393 - gcc 2.96 incorrectly compiles clapack
gcc 2.96 incorrectly compiles clapack
Status: CLOSED WONTFIX
Product: Red Hat Linux
Classification: Retired
Component: gcc (Show other bugs)
7.0
i386 Linux
medium Severity medium
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Assigned To: Jakub Jelinek
David Lawrence
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Reported: 2000-12-16 15:47 EST by Need Real Name
Modified: 2007-04-18 12:30 EDT (History)
0 users

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Last Closed: 2004-10-03 18:30:47 EDT
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Description Need Real Name 2000-12-16 15:47:48 EST 
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 11:37:55 EST 
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 18:30:47 EDT 
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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