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Created attachment 1077084 [details]
Test program

Description of problem:
There seems to be a bug in dsyevr function in lapack that ships with RHEL6 but does not appear in 3.5.0 lapack (and therefore also in atlas so atlas would need a rebuild as well) - it's described at http://icl.cs.utk.edu/lapack-forum/viewtopic.php?f=2&t=4767 but I'll copy all of that here.

Version-Release number of selected component (if applicable):
3.2.1

How reproducible:


Steps to Reproduce:
1. Compile attached program (gfortran test.f90 -llapack)
2. Run it, it will wait for input - give it:
  4.0233725957917259288124166e-07  1.1475559753759016807209544e-22  3.1797364433177036979501603e-68 
  1.1475559753759016807209544e-22  4.0233725957917259288124166e-07 -7.5079600860804907344589960e-56 
  3.1797364433177036979501603e-68 -7.5079600860804907344589960e-56  4.3213250161962713132013381e-05

Actual results:
In the output you will see
dsyevr: info =   1
which, I am told, should not be there and indeed it is not with newer lapack, openblas or Intel's MKL.

Expected results:
No dsyevr: info =   1

Additional info:

Red Hat Enterprise Linux 6 is in the Production 3 Phase. During the Production 3 Phase, Critical impact Security Advisories (RHSAs) and selected Urgent Priority Bug Fix Advisories (RHBAs) may be released as they become available.

The official life cycle policy can be reviewed here:

http://redhat.com/rhel/lifecycle

This issue does not meet the inclusion criteria for the Production 3 Phase and will be marked as CLOSED/WONTFIX. If this remains a critical requirement, please contact Red Hat Customer Support to request a re-evaluation of the issue, citing a clear business justification. Note that a strong business justification will be required for re-evaluation. Red Hat Customer Support can be contacted via the Red Hat Customer Portal at the following URL:

https://access.redhat.com/