https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111852
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Reduced testcase struct poly_int { poly_int() = default; template <typename> poly_int(); }; union rtunion { poly_int rt_subregrt_rtx; }; struct rtx_def { rtunion fld; }; void cse_insn() { rtx_def memory_extend_buf; } which got fixed with r5-3834 as part of PR63362 fix.