https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68362
Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mpolacek at gcc dot gnu.org --- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> --- The problem here is that check_case_bounds is getting NOP_EXPRs: (const A) 0 introduced in convert_and_check called in c_add_case_label, and then it tries tree_int_cst_compare on that, oops. STRIP_NOPS-ing case_low and case_high would fix this...