[Bug fortran/56674] New: ICE in check_sym_interfaces

[Joost.VandeVondele at mat dot ethz.ch]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56674

             Bug #: 56674
           Summary: ICE in check_sym_interfaces
    Classification: Unclassified
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: Joost.VandeVondele@mat.ethz.ch


The following invalid testcase produces and ICE with current trunk.

> cat bug.f90 
MODULE kinds
  INTEGER, PARAMETER :: dp=8,int_8=8
END MODULE 
MODULE realspace_grid_types
  USE kinds,                           ONLY: dp, int_8
  PUBLIC :: realspace_grid_type,&
            realspace_grid_input_type
  END TYPE realspace_grid_desc_type
  TYPE realspace_grid_desc_p_type
     TYPE(realspace_grid_desc_type), POINTER :: rs_desc
  END TYPE realspace_grid_desc_p_type
CONTAINS
  SUBROUTINE rs_grid_create_descriptor ( desc, pw_grid, input_settings, error)
    TYPE(realspace_grid_input_type), &
    IF ( pw_grid % para % mode == PW_MODE_LOCAL ) THEN
  END SUBROUTINE
END MODULE realspace_grid_types


> gfortran -v  bug.f90 
Driving: gfortran -v bug.f90 -l gfortran -l m -shared-libgcc
Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=/data/vjoost/gnu/gcc_trunk/install/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc/configure --prefix=/data/vjoost/gnu/gcc_trunk/install
--enable-languages=c,c++,fortran --disable-multilib --enable-plugins
--enable-lto --disable-bootstrap
Thread model: posix
gcc version 4.9.0 20130321 (experimental) [trunk revision 196847] (GCC) 
COLLECT_GCC_OPTIONS='-v' '-shared-libgcc' '-mtune=generic' '-march=x86-64'

/data/vjoost/gnu/gcc_trunk/install/libexec/gcc/x86_64-unknown-linux-gnu/4.9.0/f951
bug.f90 -quiet -dumpbase bug.f90 -mtune=generic -march=x86-64 -auxbase bug
-version -fintrinsic-modules-path
/data/vjoost/gnu/gcc_trunk/install/lib/gcc/x86_64-unknown-linux-gnu/4.9.0/finclude
-o /tmp/ccaTm8lw.s
GNU Fortran (GCC) version 4.9.0 20130321 (experimental) [trunk revision 196847]
(x86_64-unknown-linux-gnu)
    compiled by GNU C version 4.7.2 20120816 (prerelease) [gcc-4_7-branch
revision 190437], GMP version 4.3.2, MPFR version 2.4.2, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU Fortran (GCC) version 4.9.0 20130321 (experimental) [trunk revision 196847]
(x86_64-unknown-linux-gnu)
    compiled by GNU C version 4.7.2 20120816 (prerelease) [gcc-4_7-branch
revision 190437], GMP version 4.3.2, MPFR version 2.4.2, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
bug.f90:8.5:

  END TYPE realspace_grid_desc_type
     1
Error: Expecting END MODULE statement at (1)
bug.f90:14.35:

    TYPE(realspace_grid_input_type), &
                                   1
Error: Derived type 'realspace_grid_input_type' at (1) is being used before it
is defined
bug.f90:10.55:

     TYPE(realspace_grid_desc_type), POINTER :: rs_desc
                                                       1
Error: The pointer component 'rs_desc' of 'realspace_grid_desc_p_type' at (1)
is a type that has not been declared
f951: internal compiler error: Segmentation fault
0x994a0f crash_signal
    ../../gcc/gcc/toplev.c:332
0x55650b show_locus
    ../../gcc/gcc/fortran/error.c:310
0x556d77 error_print
    ../../gcc/gcc/fortran/error.c:666
0x5573a8 gfc_error(char const*, ...)
    ../../gcc/gcc/fortran/error.c:961
0x55fda7 check_interface0
    ../../gcc/gcc/fortran/interface.c:1469
0x562194 check_sym_interfaces
    ../../gcc/gcc/fortran/interface.c:1581
0x5c8023 do_traverse_symtree
    ../../gcc/gcc/fortran/symbol.c:3575
0x562279 gfc_check_interfaces(gfc_namespace*)
    ../../gcc/gcc/fortran/interface.c:1691
0x5b3bbb resolve_types
    ../../gcc/gcc/fortran/resolve.c:14915
0x5a7773 gfc_resolve
    ../../gcc/gcc/fortran/resolve.c:14999
0x5a7773 gfc_resolve(gfc_namespace*)
    ../../gcc/gcc/fortran/resolve.c:14987
0x59d287 gfc_parse_file()
    ../../gcc/gcc/fortran/parse.c:4602
0x5da8d5 gfc_be_parse_file
    ../../gcc/gcc/fortran/f95-lang.c:189
Please submit a full bug report,