[Bug c++/100928] New: [c++20] ICE with structural type value returned from constexpr function as template argument

[josephcanedo at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100928

            Bug ID: 100928
           Summary: [c++20] ICE with structural type value returned from
                    constexpr function as template argument
           Product: gcc
           Version: 11.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: josephcanedo at hotmail dot com
  Target Milestone: ---

Created attachment 50953
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50953&action=edit
test_tag.cpp

$ g++-11 -std=c++20 -c test_tag.cpp
test_tag.cpp:40:43: internal compiler error: Segmentation fault
   40 | using concat_test = test<Name + "hhhh"_tag>;
      |                                           ^
0xe30681 internal_error(char const*, ...)
        ???:0
0x1062d42 resolve_args(vec<tree_node*, va_gc, vl_embed>*, int)
        ???:0
0x10a169a finish_template_type(tree_node*, tree_node*, int)
        ???:0
0x1492c03 c_parse_file()
        ???:0
0x148061e c_common_parse_file()
        ???:0

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