[Bug c++/106849] New: internal compiler error: tree check: expected none of template_decl, have template_decl in do_nonmember_using_decl, at cp/name-lookup.cc:4841

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106849

            Bug ID: 106849
           Summary: internal compiler error: tree check: expected none of
                    template_decl, have template_decl in
                    do_nonmember_using_decl, at cp/name-lookup.cc:4841
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: redi at gcc dot gnu.org
            Blocks: 103524
  Target Milestone: ---

I don't know if this is valid, but it shouldn't ICE:

export module lib;

namespace outer {
  template<typename T> void any_of(T) { }
}

export using outer::any_of;


$ ~/gcc/13/bin/gcc -c -std=c++23 -fmodules-ts lib.cc 
lib.cc:7:21: internal compiler error: tree check: expected none of
template_decl, have template_decl in do_nonmember_using_decl, at
cp/name-lookup.cc:4841
    7 | export using outer::any_of;
      |                     ^~~~~~
0x887d60 tree_not_check_failed(tree_node const*, char const*, int, char const*,
...)
        /home/jwakely/src/gcc/gcc/gcc/tree.cc:8864
0x6eea80 tree_not_check(tree_node*, char const*, int, char const*, tree_code)
        /home/jwakely/src/gcc/gcc/gcc/tree.h:3529
0x6eea80 do_nonmember_using_decl
        /home/jwakely/src/gcc/gcc/gcc/cp/name-lookup.cc:4841
0xac2676 finish_nonmember_using_decl(tree_node*, tree_node*)
        /home/jwakely/src/gcc/gcc/gcc/cp/name-lookup.cc:6284
0xacaf04 finish_using_decl
        /home/jwakely/src/gcc/gcc/gcc/cp/parser.cc:21629
0xb113ce cp_parser_using_declaration
        /home/jwakely/src/gcc/gcc/gcc/cp/parser.cc:21757
0xb1eba6 cp_parser_declaration
        /home/jwakely/src/gcc/gcc/gcc/cp/parser.cc:15099
0xb1e794 cp_parser_module_export
        /home/jwakely/src/gcc/gcc/gcc/cp/parser.cc:14844
0xb1e794 cp_parser_declaration
        /home/jwakely/src/gcc/gcc/gcc/cp/parser.cc:15040
0xb1f432 cp_parser_toplevel_declaration
        /home/jwakely/src/gcc/gcc/gcc/cp/parser.cc:15120
0xb1f432 cp_parser_translation_unit
        /home/jwakely/src/gcc/gcc/gcc/cp/parser.cc:5068
0xb1f432 c_parse_file()
        /home/jwakely/src/gcc/gcc/gcc/cp/parser.cc:48594
0xc57221 c_common_parse_file()
        /home/jwakely/src/gcc/gcc/gcc/c-family/c-opts.cc:1255
Please submit a full bug report, with preprocessed source (by using
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Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103524
[Bug 103524] [meta-bug] modules issue