[Bug fortran/18977] LAPACK test xeigtsts segfaults with optimization

[ebotcazou at gcc dot gnu dot org]

-- 
Bug 18977 depends on bug 17675, which changed state.

Bug 17675 Summary: [Regression w.r.t. g77] Alignment constraints not honored in 
EQUIVALENCE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17675

           What    |Old Value                   |New Value
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|FIXED                       |

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18977