[Bug c++/99424] New: [modules] ICE tree check: expected tree_vec, have error_mark in lookup_template_class_1, at cp/pt.c:9803

[Bug c++/99424] New: [modules] ICE tree check: expected tree_vec, have error_mark in lookup_template_class_1, at cp/pt.c:9803

[alexander.lelyakin at googlemail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99424

            Bug ID: 99424
           Summary: [modules] ICE tree check: expected tree_vec, have
                    error_mark in lookup_template_class_1, at cp/pt.c:9803
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: alexander.lelyakin at googlemail dot com
  Target Milestone: ---

g++ -std=c++20 -fmodules-ts -x c++-system-header cfloat
g++ -std=c++20 -fmodules-ts -x c++-system-header iostream
g++ -std=c++20 -fmodules-ts -x c++-system-header coroutine
g++ -std=c++20 -fmodules-ts -x c++-system-header ctime
g++ -std=c++20 -fmodules-ts -x c++-system-header tuple
g++ -std=c++20 -fmodules-ts -x c++-system-header shared_mutex
g++ -std=c++20 -fmodules-ts -x c++-system-header map
g++ -std=c++20 -fmodules-ts -x c++-system-header compare
g++ -std=c++20 -fmodules-ts -x c++-system-header barrier
g++ -std=c++20 -fmodules-ts -x c++-system-header cmath
g++ -std=c++20 -fmodules-ts -x c++-system-header string_view
g++ -std=c++20 -fmodules-ts -x c++-system-header cstdarg
g++ -std=c++20 -fmodules-ts -x c++-system-header cerrno
g++ -std=c++20 -fmodules-ts -x c++-system-header string
g++ -std=c++20 -fmodules-ts -x c++-system-header utility
g++ -std=c++20 -fmodules-ts -x c++-system-header ratio
g++ -std=c++20 -fmodules-ts -x c++-system-header cstdlib
g++ -std=c++20 -fmodules-ts -x c++-system-header cstddef
g++ -std=c++20 -fmodules-ts -x c++-system-header functional
g++ -std=c++20 -fmodules-ts -x c++-system-header bitset
----
/usr/local/include/c++/11.0.1/bitset:760:80: internal compiler error: tree
check: expected tree_vec, have error_mark in lookup_template_class_1, at
cp/pt.c:9803
  760 |       _M_check_initial_position(const std::basic_string<_CharT,
_Traits, _Alloc>& __s,
      |                                                                        
       ^
0x875966 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
        ../../gcc/gcc/tree.c:9814
0x71d27b tree_check(tree_node*, char const*, int, char const*, tree_code)
        ../../gcc/gcc/tree.h:3353
0x71d27b lookup_template_class_1
        ../../gcc/gcc/cp/pt.c:9803
0xb21d1c lookup_template_class(tree_node*, tree_node*, tree_node*, tree_node*,
int, int)
        ../../gcc/gcc/cp/pt.c:10237
0xb49afb finish_template_type(tree_node*, tree_node*, int)
        ../../gcc/gcc/cp/semantics.c:3498
0xabbd21 cp_parser_template_id
        ../../gcc/gcc/cp/parser.c:17444
0xabbf0b cp_parser_class_name
        ../../gcc/gcc/cp/parser.c:24671
0xab349a cp_parser_qualifying_entity
        ../../gcc/gcc/cp/parser.c:6994
0xab349a cp_parser_nested_name_specifier_opt
        ../../gcc/gcc/cp/parser.c:6676
0xac8bf4 cp_parser_simple_type_specifier
        ../../gcc/gcc/cp/parser.c:18837
0xaa798d cp_parser_type_specifier
        ../../gcc/gcc/cp/parser.c:18495
0xaa8989 cp_parser_decl_specifier_seq
        ../../gcc/gcc/cp/parser.c:15041
0xac37ae cp_parser_parameter_declaration
        ../../gcc/gcc/cp/parser.c:23731
0xac4182 cp_parser_parameter_declaration_list
        ../../gcc/gcc/cp/parser.c:23548
0xac45d1 cp_parser_parameter_declaration_clause
        ../../gcc/gcc/cp/parser.c:23475
0xab5713 cp_parser_direct_declarator
        ../../gcc/gcc/cp/parser.c:22124
0xab5713 cp_parser_declarator
        ../../gcc/gcc/cp/parser.c:21987
0xacc958 cp_parser_init_declarator
        ../../gcc/gcc/cp/parser.c:21485
0xad378b cp_parser_single_declaration
        ../../gcc/gcc/cp/parser.c:30493
0xad38f6 cp_parser_template_declaration_after_parameters
        ../../gcc/gcc/cp/parser.c:30065
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
----
g++ (GCC) 11.0.1 20210305 (experimental)
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

[Bug c++/99424] [modules] ICE tree check: expected tree_vec, have error_mark in lookup_template_class_1, at cp/pt.c:9803

[nathan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99424

Nathan Sidwell <nathan at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2021-03-15
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |WAITING

--- Comment #1 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
most likely dup of 99425

[Bug c++/99424] [modules] ICE tree check: expected tree_vec, have error_mark in lookup_template_class_1, at cp/pt.c:9803

[nathan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99424

--- Comment #2 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
no longer reproduces

[Bug c++/99424] [modules] ICE tree check: expected tree_vec, have error_mark in lookup_template_class_1, at cp/pt.c:9803

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99424

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
                 CC|                            |mpolacek at gcc dot gnu.org
             Status|WAITING                     |RESOLVED

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Assuming fixed.