[Bug tree-optimization/90688] New: [7/8/9/10 Regression] ICE in calc_dfs_tree, at dominance.c:458 since r235297

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90688

            Bug ID: 90688
           Summary: [7/8/9/10 Regression] ICE in calc_dfs_tree, at
                    dominance.c:458 since r235297
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
  Target Milestone: ---

I know it's a weird option combination, but still:

$ g++ /home/marxin/Programming/gcc/gcc/testsuite/g++.old-deja/g++.law/ctors15.C
-fno-dse -Os -fnon-call-exceptions -funroll-loops -fno-inline
-fdelete-dead-exceptions
during RTL pass: fwprop2
/home/marxin/Programming/gcc/gcc/testsuite/g++.old-deja/g++.law/ctors15.C: In
function ‘int main()’:
/home/marxin/Programming/gcc/gcc/testsuite/g++.old-deja/g++.law/ctors15.C:27:1:
internal compiler error: in calc_dfs_tree, at dominance.c:458
   27 | }
      | ^
0x6d0633 calc_dfs_tree
        /home/marxin/Programming/gcc/gcc/dominance.c:458
0xbc81b5 calculate_dominance_info(cdi_direction)
        /home/marxin/Programming/gcc/gcc/dominance.c:734
0x1798efd fwprop_init
        /home/marxin/Programming/gcc/gcc/fwprop.c:1438
0x1799465 fwprop_addr
        /home/marxin/Programming/gcc/gcc/fwprop.c:1557
0x1799465 execute
        /home/marxin/Programming/gcc/gcc/fwprop.c:1603
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