[Bug c++/99283] [modules] ICE in assert_definition, at cp/module.cc:4608

["alexander.lelyakin at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99283

--- Comment #3 from Alexander Lelyakin <alexander.lelyakin at googlemail dot com> ---
Following sequence:
-----
g++ -std=c++20 -fmodules-ts -x c++-system-header ostream
g++ -std=c++20 -fmodules-ts -x c++-system-header any
g++ -std=c++20 -fmodules-ts -x c++-system-header execution
g++ -std=c++20 -fmodules-ts -x c++-system-header limits
g++ -std=c++20 -fmodules-ts -x c++-system-header cstdarg
g++ -std=c++20 -fmodules-ts -x c++-system-header type_traits
g++ -std=c++20 -fmodules-ts -x c++-system-header ctime
g++ -std=c++20 -fmodules-ts -x c++-system-header locale
-----
Before it produce ICE in assert_definition.
Now it produces another error:
-----
In file included from /usr/local/include/c++/11.0.1/bits/locale_conv.h:41,
                 from /usr/local/include/c++/11.0.1/locale:43:
/usr/local/include/c++/11.0.1/bits/unique_ptr.h:74:60: internal compiler error:
tree check: expected tree_vec, have ggc_freed in lookup_template_class_1, at
cp/pt.c:9803
   74 |                typename = _Require<is_convertible<_Up*, _Tp*>>>
      |                                                            ^
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
0xab9753 cp_parser_type_specifier_seq
        ../../gcc/gcc/cp/parser.c:23346
0xab7dd4 cp_parser_type_id_1
        ../../gcc/gcc/cp/parser.c:23149
0xaba3b3 cp_parser_template_type_arg
        ../../gcc/gcc/cp/parser.c:23254
0xaba4df cp_parser_template_argument
        ../../gcc/gcc/cp/parser.c:17894
0xaba4df cp_parser_template_argument_list
        ../../gcc/gcc/cp/parser.c:17805
0xaba4df cp_parser_enclosed_template_argument_list
        ../../gcc/gcc/cp/parser.c:30775
0xabb80c cp_parser_template_id
        ../../gcc/gcc/cp/parser.c:17377
0xabbf0b cp_parser_class_name
        ../../gcc/gcc/cp/parser.c:24671
0xab349a cp_parser_qualifying_entity
        ../../gcc/gcc/cp/parser.c:6994
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.

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g++ (GCC) 11.0.1 20210305 (experimental)