[Bug fortran/84539] New: ICE and segfault with assignment to CLASS(*) array

["neil.n.carlson at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84539

            Bug ID: 84539
           Summary: ICE and segfault with assignment to CLASS(*) array
           Product: gcc
           Version: 8.0.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: neil.n.carlson at gmail dot com
  Target Milestone: ---

Here are some issues with array assignment to an allocatable CLASS(*) array
using the current 8.0 trunk.

class(*), allocatable :: x(:)
x = [4,2]
select type (x)
type is (integer)
  if (any(x /= [4,2])) stop 1
end select
end

$ gfortran -g -fbacktrace gfortran-20180223a.f90 
gfortran-20180223a.f90:1:0:

 class(*), allocatable :: x(:)

Error: conversion of register to a different size
VIEW_CONVERT_EXPR<void *>(_1);

_12 = VIEW_CONVERT_EXPR<void *>(_1);
gfortran-20180223a.f90:1:0: internal compiler error: verify_gimple failed
0xd2b9bd verify_gimple_in_seq(gimple*)
        ../../gcc/tree-cfg.c:5247
0xaa7495 gimplify_body(tree_node*, bool)
        ../../gcc/gimplify.c:12710
0xaa7684 gimplify_function_tree(tree_node*)
        ../../gcc/gimplify.c:12800
0x925d17 cgraph_node::analyze()
        ../../gcc/cgraphunit.c:670
0x9286b3 analyze_functions
        ../../gcc/cgraphunit.c:1131
0x9294a2 symbol_table::finalize_compilation_unit()
        ../../gcc/cgraphunit.c:2691
Please submit a full bug report,