https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99208
Bug ID: 99208
Summary: [modules] ICE with partitions & instantiations of
linkage-typedef structs
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: nathan at gcc dot gnu.org
Target Milestone: ---
Triaging 98718 ran into this:
// b_a.ii
module;
# 3 "b_a.ii" 1
typedef struct {} __mbstate_t;
template<typename _StateT> class fpos;
# 6 "" 2
export module hello:format;
export void format (const fpos<__mbstate_t> &);
// b_b.ii
export module hello;
export import :format;
zathras:94>./cc1plus -quiet -fmodules-ts b_a.ii && ./cc1plus -quiet
-fmodules-ts b_b.ii
b_b.ii:1:8: internal compiler error: in insert, at cp/module.cc:4904
1 | export module hello;
| ^~~~~~
0xcb1949 trees_out::insert(tree_node*, walk_kind)
../../../src/gcc/cp/module.cc:4904
0xcbaf8f trees_out::add_indirects(tree_node*)
../../../src/gcc/cp/module.cc:7328
0xcc1f6a trees_out::decl_node(tree_node*, walk_kind)
../../../src/gcc/cp/module.cc:8677
0xcc41c1 trees_out::tree_node(tree_node*)
../../../src/gcc/cp/module.cc:9179
0xcb1e4e trees_out::vec_chained_decls(tree_node*)
../../../src/gcc/cp/module.cc:4992
0xcd17a0 trees_out::write_class_def(tree_node*)
../../../src/gcc/cp/module.cc:11748
0xcd5947 trees_out::write_definition(tree_node*)
../../../src/gcc/cp/module.cc:12356
0xcd9299 depset::hash::find_dependencies(module_state*)
../../../src/gcc/cp/module.cc:13238
0xce60ed module_state::write(elf_out*, cpp_reader*)
../../../src/gcc/cp/module.cc:17611
0xcec92c finish_module_processing(cpp_reader*)
../../../src/gcc/cp/module.cc:19860
