https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97966
Bug ID: 97966 Summary: maybe_instantiate_noexcept Product: gcc Version: 10.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: jonathan.k at qspark dot co Target Milestone: --- Getting the following backtrace while compiling using gcc 10.2 with c++17 on fedora 23 os: 11:09:02 0x5fe0c0 maybe_instantiate_noexcept(tree_node*, int) 11:09:02 ../.././gcc/cp/pt.c:25346 11:09:02 0x6c5f9a mark_used(tree_node*, int) 11:09:02 ../.././gcc/cp/decl2.c:5516 11:09:02 0x77cd97 instantiate_class_template_1 11:09:02 ../.././gcc/cp/pt.c:11819 11:09:02 0x77d7a2 instantiate_class_template(tree_node*) 11:09:02 ../.././gcc/cp/pt.c:12120 11:09:02 0x7ad0ed complete_type(tree_node*) 11:09:02 ../.././gcc/cp/typeck.c:137 11:09:02 0x7ad0ed complete_type(tree_node*) 11:09:02 ../.././gcc/cp/typeck.c:111 11:09:02 0x77cdec instantiate_class_template_1 11:09:02 ../.././gcc/cp/pt.c:11906 11:09:02 0x77d7a2 instantiate_class_template(tree_node*) 11:09:02 ../.././gcc/cp/pt.c:12120 11:09:02 0x7ad0ed complete_type(tree_node*) 11:09:02 ../.././gcc/cp/typeck.c:137 11:09:02 0x7ad0ed complete_type(tree_node*) 11:09:02 ../.././gcc/cp/typeck.c:111 11:09:02 0x730ef3 cp_parser_nested_name_specifier_opt 11:09:02 ../.././gcc/cp/parser.c:6642 11:09:02 0x7201ca cp_parser_constructor_declarator_p 11:09:02 ../.././gcc/cp/parser.c:28667 11:09:02 0x7201ca cp_parser_decl_specifier_seq 11:09:02 ../.././gcc/cp/parser.c:14349 11:09:02 0x743485 cp_parser_single_declaration 11:09:02 ../.././gcc/cp/parser.c:29421 11:09:02 0x7437fd cp_parser_template_declaration_after_parameters 11:09:02 ../.././gcc/cp/parser.c:29084 11:09:02 0x743daa cp_parser_explicit_template_declaration 11:09:02 ../.././gcc/cp/parser.c:29350 11:09:02 0x746c89 cp_parser_declaration 11:09:02 ../.././gcc/cp/parser.c:13387 11:09:02 0x746872 cp_parser_toplevel_declaration 11:09:02 ../.././gcc/cp/parser.c:13466 11:09:02 0x746872 cp_parser_declaration_seq_opt 11:09:02 ../.././gcc/cp/parser.c:13314 11:09:02 0x746872 cp_parser_namespace_body 11:09:02 ../.././gcc/cp/parser.c:19727 Attached a generated ii file. Compilation flag: /usr/local/bin/g++ <include-directives> -save-temps=obj -std=c++17 -Wall -Wextra -Wno-unused-parameter -Werror -O3 -g -Wfatal-errors -ftemplate-depth=1800 -ftrack-macro-expansion=1 -static-libstdc++ -fpic -o <cmake-build-path>/Exceptions.cpp.o -c <source-path>/Exceptions.cpp If you can also provide a code workaround I can use if this is a known issue then it would be great. Thanks in advance, Jonathan