https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106363
Bug ID: 106363 Summary: [modules] Can't selectively reexport imported declaration in same namespace Product: gcc Version: 13.0 Status: UNCONFIRMED Keywords: ice-on-valid-code Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: johelegp at gmail dot com CC: johelegp at gmail dot com Target Milestone: --- See https://godbolt.org/z/a3GqTEs5P, which Clang accepts: https://godbolt.org/z/svaGvz1bz. mod2.cpp: ```C++ export module mod2; namespace ns { export int x = 0; } ``` mod.cpp: ```C++ export module mod; import mod2; namespace ns { export using ns::x; } ``` test.cpp: ```C++ import mod; int main() { return ns::x; } ``` Output: ``` [ 62%] Building CXX object CMakeFiles/mod.dir/mod.cpp.o mod.cpp:1:8: internal compiler error: in decl_node, at cp/module.cc:8678 1 | export module mod; | ^~~~~~ 0x221f229 internal_error(char const*, ...) ???:0 0x74c10d fancy_abort(char const*, int, char const*) ???:0 0x8fcc60 trees_out::decl_node(tree_node*, walk_kind) ???:0 0x8fd01d trees_out::tree_node(tree_node*) ???:0 0x905086 module_state::write_cluster(elf_out*, depset**, unsigned int, depset::hash&, unsigned int*, unsigned int*) ???:0 0x906ace module_state::write_begin(elf_out*, cpp_reader*, module_state_config&, unsigned int&) ???:0 0x9079f2 finish_module_processing(cpp_reader*) ???:0 0x87253d c_parse_final_cleanups() ???:0 0xb2d060 c_common_parse_file() ???:0 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. ```