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From: "alexander.lelyakin at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/99238] [modules] internal compiler error: segmentation fault
Date: Tue, 09 Mar 2021 07:51:33 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99238

--- Comment #2 from Alexander Lelyakin <alexander.lelyakin at googlemail do=
t com> ---
Even shorter sequence:

g++ -std=3Dc++20 -fmodules-ts -x c++-system-header stdexcept
g++ -std=3Dc++20 -fmodules-ts -x c++-system-header stop_token
----
/usr/local/include/c++/11.0.1/stop_token: internal compiler error: Segmenta=
tion
fault
0x10fee8f crash_signal
        ../../gcc/gcc/toplev.c:327
0x6deab8 trees_out::get_tag(tree_node*)
        ../../gcc/gcc/cp/module.cc:4783
0x6deab8 trees_out::ref_node(tree_node*)
        ../../gcc/gcc/cp/module.cc:7090
0x6deab8 trees_out::ref_node(tree_node*)
        ../../gcc/gcc/cp/module.cc:7073
0xa5dfdc trees_out::tree_node(tree_node*)
        ../../gcc/gcc/cp/module.cc:8978
0xa5fec9 trees_out::type_node(tree_node*)
        ../../gcc/gcc/cp/module.cc:8701
0xa5e3da trees_out::tree_node(tree_node*)
        ../../gcc/gcc/cp/module.cc:9061
0xa5cbda trees_out::tree_node_vals(tree_node*)
        ../../gcc/gcc/cp/module.cc:7053
0xa5cbda trees_out::decl_value(tree_node*, depset*)
        ../../gcc/gcc/cp/module.cc:7640
0xa5d1ab trees_out::decl_node(tree_node*, walk_kind)
        ../../gcc/gcc/cp/module.cc:8549
0xa5e1a2 trees_out::tree_node(tree_node*)
        ../../gcc/gcc/cp/module.cc:9104
0xa5e66d trees_out::vec_chained_decls(tree_node*)
        ../../gcc/gcc/cp/module.cc:4879
0xa6255b trees_out::write_class_def(tree_node*)
        ../../gcc/gcc/cp/module.cc:11642
0xa6424c depset::hash::find_dependencies(module_state*)
        ../../gcc/gcc/cp/module.cc:13172
0xa64668 module_state::write(elf_out*, cpp_reader*)
        ../../gcc/gcc/cp/module.cc:17644
0xa65aff finish_module_processing(cpp_reader*)
        ../../gcc/gcc/cp/module.cc:19884
0x9f901b c_parse_final_cleanups()
        ../../gcc/gcc/cp/decl2.c:5175
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 20210308 (experimental)
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