[Bug ipa/78309] New: ICE: in get_hash, at ipa-icf.c:2124

["trippels at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78309

            Bug ID: 78309
           Summary: ICE: in get_hash, at ipa-icf.c:2124
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: trippels at gcc dot gnu.org
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---

During Firefox LTO build I get:

lto1: internal compiler error: in get_hash, at ipa-icf.c:2124
0x11021833 ipa_icf::sem_variable::get_hash()
        ../../gcc/gcc/ipa-icf.c:2124
0x11020a1f ipa_icf::sem_item::update_hash_by_local_refs(hash_map<symtab_node*,
ipa_icf::sem_item*, simple_hashmap_traits<default_hash_traits<symtab_node*>,
ipa_icf::sem_item*> >&)
        ../../gcc/gcc/ipa-icf.c:843
0x1102eb93 ipa_icf::sem_item_optimizer::update_hash_by_addr_refs()
        ../../gcc/gcc/ipa-icf.c:2750
0x11031153 ipa_icf::sem_item_optimizer::execute()
        ../../gcc/gcc/ipa-icf.c:2612
0x110345cf ipa_icf_driver
        ../../gcc/gcc/ipa-icf.c:3552
0x110345cf ipa_icf::pass_ipa_icf::execute(function*)
        ../../gcc/gcc/ipa-icf.c:3599