[Bug tree-optimization/83104] New: [8 Regression] ICE: Segmentation fault

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83104

            Bug ID: 83104
           Summary: [8 Regression] ICE: Segmentation fault
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: trippels at gcc dot gnu.org
                CC: law at gcc dot gnu.org
  Target Milestone: ---

~ % cat fetch-value.i
int *a;
int foo() {
  if (a && a - (int *)0 > 0)
    return 0;
}

 ~ % gcc -O2 -c fetch-value.i
during GIMPLE pass: vrp
fetch-value.i: In function ‘foo’:
fetch-value.i:2:5: internal compiler error: Segmentation fault
 int foo() {
     ^~~
0x10985953 crash_signal
        ../../gcc/gcc/toplev.c:325
0x1020fa7c tree_int_cst_elt_check(tree_node const*, int, char const*, int, char
const*)
        ../../gcc/gcc/tree.h:3277
0x1020fa7c wi::to_wide(tree_node const*)
        ../../gcc/gcc/tree.h:5246
0x10dabb9b vr_values::two_valued_val_range_p(tree_node*, tree_node**,
tree_node**)
        ../../gcc/gcc/vr-values.c:4053
0x10dac783 vr_values::simplify_stmt_using_ranges(gimple_stmt_iterator*)
        ../../gcc/gcc/vr-values.c:4116
0x10cefb9b vrp_folder::simplify_stmt_using_ranges(gimple_stmt_iterator*)
        ../../gcc/gcc/tree-vrp.c:6362
0x10cefb9b vrp_folder::fold_stmt(gimple_stmt_iterator*)
        ../../gcc/gcc/tree-vrp.c:6437
0x10bcc5a3
substitute_and_fold_dom_walker::before_dom_children(basic_block_def*)
        ../../gcc/gcc/tree-ssa-propagate.c:1073
0x1126ee9f dom_walker::walk(basic_block_def*)
        ../../gcc/gcc/domwalk.c:308
0x10bcb33f substitute_and_fold_engine::substitute_and_fold()
        ../../gcc/gcc/tree-ssa-propagate.c:1173
0x10cf00e3 vrp_prop::vrp_finalize(bool)
        ../../gcc/gcc/tree-vrp.c:6788
0x10d013df execute_vrp
        ../../gcc/gcc/tree-vrp.c:6864