https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63578
Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mpolacek at gcc dot gnu.org --- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Here we're calling cplus_decl_attributes on a variable that is undeduced_auto_decl; calling layout_type then of course crashes because the middle end can't handle undeduced auto.