https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101497
--- Comment #5 from Andrew Macleod <amacleod at redhat dot com> --- uc_1.0_1 = uc_1; _2 = (int) uc_1.0_1; _3 = 211 - _2; _3 evaluates as 211 - [-128, 127], or [84, 339] _4 = _3 > 0; _5 = (int) _4; func_12_uli_6 = _5; i_4.1_6 = i_4; _7 = i_4.1_6 % 0; We changed it so that anything mod 0 was undefined. so _7 is UNDEFINED. i_4 = _7; _11 = _3 > 0; _3 i s[84, 339] meaning _11 always evaluates TRUE. _10 = _11 ? _7 : 0; The code for COND_EXPR confirms the types match when it folds. In this case, the result is UNDEFINED.. undefined has no type, so we need to add a check for that.
