https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72764
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org, | |jason at gcc dot gnu.org --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Seems both make_typename_type and finish_decltype_type can return error_mark_node even if the arguments passed to those aren't error_mark_node (as they are called tf_none, no diagnostics is emitted). The question is what strip_typedefs should do if that happens? Shall it return error_mark_node, or the original type, something different? The end of the function assumes that result is a valid type.