https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89158
Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mpolacek at gcc dot gnu.org --- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> --- From a quick look it seems we haven't properly set need_temporary_p when converting NON_LVALUE_EXPR<42> to const int &. Then taking the address of 42 breaks.