https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98417
Bug ID: 98417 Summary: -internal compiler error when using -g Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: patrick.kox at commandoregel dot be Target Milestone: --- I'm new so I hope this is the correct way to report this. When using the -g flag with the C++20 modules example from the wiki (https://gcc.gnu.org/wiki/cxx-modules) the compiler gives an internal compiler error. This is with version (g++ (GCC) 11.0.0 20201220 (experimental)). The output of the compiler is: g++ -g -Wall -fmodules-ts -c -MMD -MP -o hello.o hello.cc g++ -g -Wall -fmodules-ts -c -MMD -MP -o main.o main.cc main.cc: In function ‘int main()’: main.cc:11:3: internal compiler error: in gen_typedef_die, at dwarf2out.c:25373 11 | greeter ("world"); | ^~~~~~~ 0x7471d6 gen_typedef_die ../.././gcc/dwarf2out.c:25373 0x7471d6 gen_typedef_die ../.././gcc/dwarf2out.c:25345 0xcef8fa gen_decl_die ../.././gcc/dwarf2out.c:26377 0xcf1b13 gen_member_die ../.././gcc/dwarf2out.c:25188 0xcf1b13 gen_struct_or_union_type_die ../.././gcc/dwarf2out.c:25284 0xcf1b13 gen_tagged_type_die ../.././gcc/dwarf2out.c:25485 0xd0c8d9 gen_tagged_type_die ../.././gcc/dwarf2out.c:25439 0xd0c8d9 gen_typedef_die ../.././gcc/dwarf2out.c:25399 0xd0c8d9 gen_typedef_die ../.././gcc/dwarf2out.c:25345 0xcef8fa gen_decl_die ../.././gcc/dwarf2out.c:26377 0xcf4426 gen_type_die ../.././gcc/dwarf2out.c:25735 0xcef3c2 gen_decl_die ../.././gcc/dwarf2out.c:26374 0xcf05b3 dwarf2out_decl ../.././gcc/dwarf2out.c:26929 0xcf0b41 dwarf2out_type_decl ../.././gcc/dwarf2out.c:26647 0xcf0b41 dwarf2out_type_decl ../.././gcc/dwarf2out.c:26642 0xfd75f4 rest_of_type_compilation(tree_node*, int) ../.././gcc/passes.c:339 0xa1ec9d trees_in::read_class_def(tree_node*, tree_node*) ../.././gcc/cp/module.cc:12161 0xa204d9 module_state::read_cluster(unsigned int) ../.././gcc/cp/module.cc:14901 0xa20cfd module_state::load_section(unsigned int, binding_slot*) ../.././gcc/cp/module.cc:18032 0xa20dbf module_state::lazy_load(unsigned int, binding_slot*) ../.././gcc/cp/module.cc:18681 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. make: *** [<builtin>: main.o] Error 1 removing the -g flag from the command solves the issue