[Bug sanitizer/65655] New: [5 Regression][UBSAN] ICE in speculative_call_info, at cgraph.c:1151

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65655

            Bug ID: 65655
           Summary: [5 Regression][UBSAN] ICE in speculative_call_info, at
                    cgraph.c:1151
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P3
         Component: sanitizer
          Assignee: unassigned at gcc dot gnu.org
          Reporter: burnus at gcc dot gnu.org
                CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
                    jakub at gcc dot gnu.org, kcc at gcc dot gnu.org

Created attachment 35206
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35206&action=edit
testcase.ii

g++ -std=c++11 -fsanitize=undefined -O2 input.ii

fails now with

input.ii:49:1: internal compiler error: in speculative_call_info, at
cgraph.c:1151
 }
 ^
0x92b9ae cgraph_edge::speculative_call_info(cgraph_edge*&, cgraph_edge*&,
ipa_ref*&)
        ../../gcc/cgraph.c:1151
0x92ba8c cgraph_edge::resolve_speculation(tree_node*)
        ../../gcc/cgraph.c:1166
0xb2c5a3 redirect_to_unreachable
        ../../gcc/ipa-inline-analysis.c:773
0xb2c5a3 edge_set_predicate
        ../../gcc/ipa-inline-analysis.c:797
0xb2e161 inline_edge_duplication_hook
        ../../gcc/ipa-inline-analysis.c:1325
0x92c403 symbol_table::call_edge_duplication_hooks(cgraph_edge*, cgraph_edge*)
        ../../gcc/cgraph.c:458
0x92c403 cgraph_edge::make_speculative(cgraph_node*, long, int)
        ../../gcc/cgraph.c:1085