[Bug fortran/27320] New: ICE with -fdump-parse-tree after error

["tkoenig at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

This ICE happens after the error message with

$ cat gen.f90
module generic
  interface foo
     module procedure foo_real
  end interface foo
contains
  subroutine foo_real(a)
    real :: a
  end subroutine foo_real
end module generic
program main
  use generic
  call foo(1)
end program main
$ gfortran -fdump-parse-tree gen.f90

        Namespace: A-H: (REAL 4) I-N: (INTEGER 4) O-Z: (REAL 4)
        procedure name = generic
        symtree: foo  Ambig 0
        symbol foo (UNKNOWN 0)(PROCEDURE UNKNOWN-INTENT UNKNOWN-ACCESS
UNKNOWN-PROC)
        Generic interfaces: foo_real

        symtree: generic  Ambig 0
        symbol generic (UNKNOWN 0)(MODULE UNKNOWN-INTENT UNKNOWN-ACCESS
UNKNOWN-PROC)

        symtree: foo_real  Ambig 0
        symbol foo_real (UNKNOWN 0)(PROCEDURE UNKNOWN-INTENT UNKNOWN-ACCESS
MODULE-PROC SUBROUTINE)
        Formal arglist: a



        CONTAINS

          Namespace: A-H: (REAL 4) I-N: (INTEGER 4) O-Z: (REAL 4)
          procedure name = foo_real
          symtree: foo_real  Ambig 0 from namespace generic
          symtree: a  Ambig 0
          symbol a (REAL 4)(VARIABLE UNKNOWN-INTENT UNKNOWN-ACCESS UNKNOWN-PROC
DUMMY)




 In file gen.f90:12

  call foo(1)
            1
Error: Generic subroutine 'foo' at (1) is not an intrinsic subroutine

        Namespace: A-H: (REAL 4) I-N: (INTEGER 4) O-Z: (REAL 4)
        procedure name = MAIN__
        symtree: generic  Ambig 0
        symbol generic (UNKNOWN 0)(MODULE UNKNOWN-INTENT UNKNOWN-ACCESS
UNKNOWN-PROC USE-ASSOC)

        symtree: MAIN__  Ambig 0
        symbol MAIN__ (UNKNOWN 0)(PROCEDURE UNKNOWN-INTENT PUBLIC UNKNOWN-PROC
SUBROUTINE)

        symtree: foo  Ambig 0
        symbol foo (UNKNOWN 0)(PROCEDURE UNKNOWN-INTENT UNKNOWN-ACCESS
UNKNOWN-PROC USE-ASSOC)
        Generic interfaces: foo_real

        symtree: foo_real  Ambig 0
        symbol foo_real (UNKNOWN 0)(PROCEDURE UNKNOWN-INTENT UNKNOWN-ACCESS
MODULE-PROC USE-ASSOC SUBROUTINE)
        Formal arglist: a
        Formal namespace
          Namespace: A-H: (REAL 4) I-N: (INTEGER 4) O-Z: (REAL 4)
          procedure name = foo_real
          symtree: @0  Ambig 0
          symbol a (REAL 4)(VARIABLE UNKNOWN-INTENT UNKNOWN-ACCESS UNKNOWN-PROC
DUMMY USE-ASSOC)





        symtree: main  Ambig 0
        symbol main (UNKNOWN 0)(PROGRAM UNKNOWN-INTENT UNKNOWN-ACCESS
UNKNOWN-PROC)


gen.f90:3: 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 -fdump-parse-tree after error
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code
          Severity: minor
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tkoenig at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27320