[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

[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]

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
-freport-bug).
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

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

[pinskia at gcc dot gnu.org]

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

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |davidfromonline at gmail dot com

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 112355 has been marked as a duplicate of this bug. ***

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

[davidfromonline at gmail dot com]

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

--- Comment #2 from David Stone <davidfromonline at gmail dot com> ---
Looks like it works in 13.2 but fails in trunk.

13.2: https://godbolt.org/z/d54ToW7zW
trunk: https://godbolt.org/z/eej9d7ccM

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

[davidfromonline at gmail dot com]

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

--- Comment #3 from David Stone <davidfromonline at gmail dot com> ---
Oh, as per https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112355#c3 it's just
that the 13.2 build isn't checked, so it's not a new bug.

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

[cvs-commit at gcc dot gnu.org]

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

--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Nathan Sidwell <nathan@gcc.gnu.org>:

https://gcc.gnu.org/g:5b9ecce87e8f315e2681743d75401991cdfefa71

commit r14-5460-g5b9ecce87e8f315e2681743d75401991cdfefa71
Author: Nathaniel Shead <nathanieloshead@gmail.com>
Date:   Thu Nov 9 19:05:09 2023 -0500

    c++: Fix exported using decls of templates

    We need to look at DECL_TEMPLATE_RESULT to get the module attachment.

            PR c++/106849

    gcc/cp/ChangeLog:

            * name-lookup.cc (do_nonmember_using_decl): Handle
            TEMPLATE_DECLs when checking module attachment.

    gcc/testsuite/ChangeLog:

            * g++.dg/modules/using-9.C: New test.

    Signed-off-by: Nathaniel Shead <nathanieloshead@gmail.com>
    Signed-off-by: Nathan Sidwell <nathan@acm.org>

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

[sjames at gcc dot gnu.org]

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

Sam James <sjames at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-checking
     Ever confirmed|0                           |1
                 CC|                            |nathan at gcc dot gnu.org
   Last reconfirmed|                            |2023-11-15
             Status|UNCONFIRMED                 |NEW

--- Comment #5 from Sam James <sjames at gcc dot gnu.org> ---
Fixed for 14 then?

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

[nshead at gcc dot gnu.org]

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

Nathaniel Shead <nshead at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |14.0
           Assignee|unassigned at gcc dot gnu.org      |nshead at gcc dot gnu.org
                 CC|                            |nshead at gcc dot gnu.org

--- Comment #6 from Nathaniel Shead <nshead at gcc dot gnu.org> ---
Fixed for GCC 14.