[Bug ipa/68851] New: [6 Regression] ICE: in set_comdat_group, at ipa-comdats.c:213

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68851

            Bug ID: 68851
           Summary: [6 Regression] ICE:  in set_comdat_group, at
                    ipa-comdats.c:213
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: trippels at gcc dot gnu.org
                CC: hubicka at ucw dot cz
  Target Milestone: ---

Trying to build Chromium shows:

../../third_party/WebKit/Source/platform/Timer.h:55:13: internal compiler
error: in set_comdat_group, at ipa-comdats.c:213
     {
             ^    

0x13ad12a set_comdat_group(symtab_node*, void*)
        ../../gcc/gcc/ipa-comdats.c:213
0x916795 cgraph_node::call_for_symbol_thunks_and_aliases(bool (*)(cgraph_node*,
void*), void*, bool, bool)
        ../../gcc/gcc/cgraph.c:2217
0x916820 cgraph_node::call_for_symbol_thunks_and_aliases(bool (*)(cgraph_node*,
void*), void*, bool, bool)
        ../../gcc/gcc/cgraph.c:2235
0x13ae5cb ipa_comdats
        ../../gcc/gcc/ipa-comdats.c:368
0x13ae5cb execute
        ../../gcc/gcc/ipa-comdats.c:412

Reducing.