[Bug c++/95548] New: ice in tree_to_shwi, at tree.c:7321

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95548

            Bug ID: 95548
           Summary: ice in tree_to_shwi, at tree.c:7321
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dcb314 at hotmail dot com
  Target Milestone: ---

Created attachment 48681
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48681&action=edit
gzipped C++ source code

For the attached C++ code, with recent gcc trunk and
compiler flags -flto and -std=c++17, does this:

during IPA pass: odr
assert.cc:52:1: internal compiler error: in tree_to_shwi, at tree.c:7321
0x1238302 tree_to_shwi(tree_node const*)
        ../../trunk.git/gcc/tree.c:7321
0xce5418 ipa_odr_summary_write()
        ../../trunk.git/gcc/ipa-devirt.c:4051
0xe7843a ipa_write_summaries_2(opt_pass*, lto_out_decl_state*)
        ../../trunk.git/gcc/passes.c:2645
0xe76f5a ipa_write_summaries_1(lto_symtab_encoder_d*)
        ../../trunk.git/gcc/passes.c:2676

The bug first seems to appear sometime between 20200603 and
20200604.

I'll have a go at reducing the code.