[Bug middle-end/30835] New: ICE with -O2 -ftree-loop-linear

["jv244 at cam dot ac dot uk" <gcc-bugzilla@gcc.gnu.org>]

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the following, reduced from PR29975,  causes a gfortran ICE:

MODULE test
  INTEGER, PARAMETER :: dp=KIND(0.0D0), xas_scf_default=1, xas_2s_type=2
  TYPE xas_control_type
    INTEGER :: state_type,nexc_atoms
  END TYPE
  TYPE xas_environment_type
    INTEGER :: scf_method
  END TYPE
CONTAINS
  SUBROUTINE xas_env_init(xas_env, xas_control)
    TYPE(xas_environment_type), POINTER      :: xas_env
    TYPE(xas_control_type)                   :: xas_control
    REAL(dp), DIMENSION(:, :), POINTER       :: sto_alpha

      IF(xas_env%scf_method==xas_scf_default) THEN
        ALLOCATE(sto_alpha(1,0:1),STAT=istat)
      ELSEIF( xas_control%state_type == xas_2s_type ) THEN
        ALLOCATE(sto_alpha(2,0:1),STAT=istat)
      END IF
      DO iat = 1,xas_control%nexc_atoms
        sto_alpha = 0.0_dp
      END DO
  END SUBROUTINE xas_env_init
END MODULE



gfortran -O2 -ftree-loop-linear test.f90
test.f90: In function ‘xas_env_init’:
test.f90:10: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.


-- 
           Summary: ICE with -O2 -ftree-loop-linear
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jv244 at cam dot ac dot uk


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30835