[Bug fortran/45972] New: tree check fail in use_pred_not_overlap_with_undef_path_pred

[dcb314 at hotmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45972

           Summary: tree check fail in
                    use_pred_not_overlap_with_undef_path_pred
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: dcb...@hotmail.com


Created attachment 22019
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22019
fortran source code

I just tried to compile package lapack-3.2.2 with the latest 4.6
snapshot 20101009 on a Fedora Linux box. The compiler said

sgesvd.f:1:0: internal compiler error: tree check: expected ssa_name, have
integer_cst in use_pred_not_overlap_with_undef_path_pred, at
tree-ssa-uninit.c:958
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Source code attached. Flags -O2 -Wall required.