[Bug fortran/29621] New: lapack runs into infinite loop with -03

["fkar at nemesis-project dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Steps to reproduce:

0. Download lapack (blas source included) from:
   http://www.netlib.org/lapack/lapack.tgz.

1. Build blas:
   gfortran -c BLAS_SRC\*.f -O3
   ar -r libblas.a *.o

2. Build lapack: 
   gfortran -c LAPACK_SRC\*.f -O3
   ar -r liblapack.a *.o

3. Run following testcase (testcase.f):
      ------ code ---------------------------------
      PROGRAM TESTCASE
      IMPLICIT NONE

      REAL A(3,3)
      REAL X(3)
      REAL WORK(9)
      INTEGER INFO

      A(1,1)= 1.        
      A(2,1)= 0.        
      A(3,1)= 0.        
      A(1,2)= 0.
      A(2,2)= 1.
      A(3,2)= 0.
      A(1,3)= 0.
      A(2,3)= 0.
      A(3,3)= 1.

      CALL DSYEV('N','L',3,A,3,X,WORK,3*3,INFO);
      END PROGRAM
      ------ end code -----------------------------

build with
gfortran -c testcase.f -O3
gfortran testcase.o -L. -llapack -lblas

Result: a.exe runs into an infinite loop.

Builds are on Win32 XP with gFortran 4.3.0 20061021 (experimental). Same occurs
with previous versions of gFortran.

F.E. Karaoulanis (www.nemesis-project.org)


-- 
           Summary: lapack runs into infinite loop with -03
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: fkar at nemesis-project dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29621