[Bug lto/69630] New: [6 Regression] LTO ICE in types_same_for_odr at ipa-devirt.c:402

[burnus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69630

            Bug ID: 69630
           Summary: [6 Regression] LTO ICE in types_same_for_odr at
                    ipa-devirt.c:402
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: burnus at gcc dot gnu.org
  Target Milestone: ---

Running the attached C++ (.ii) file fails with:

$ g++ -r -nostdlib -O2 -flto -Wsuggest-final-methods test.ii

lto1: internal compiler error: Segmentation fault
0xa78a4f crash_signal
        ../../gcc/toplev.c:335
0x87b824 types_same_for_odr(tree_node const*, tree_node const*, bool)
        ../../gcc/ipa-devirt.c:402
0x885bc5 possible_polymorphic_call_targets(tree_node*, long,
ipa_polymorphic_call_context, bool*, void**, bool)
        ../../gcc/ipa-devirt.c:3200
0x887427 possible_polymorphic_call_targets(cgraph_edge*, bool*, void**, bool)
        ../../gcc/ipa-utils.h:114
0x887427 ipa_devirt
        ../../gcc/ipa-devirt.c:3575