Richard Stallman fe3e8e402b (left_shift_overflows, same_sign, overflow_sum_sign): New macros. ... (add_double, div_and_round_double, lshift_double, mul_double): (neg_double, const_binop, fold): Check for signed integer overflow. Propagate overflow flags from operands to result. (const_binop, fold_convert): Use pedwarn for overflow warnings. Say `constant expression', not `constant folding', for user's sake. From-SVN: r2053		1992-09-05 02:02:17 +00:00
gcc	(left_shift_overflows, same_sign, overflow_sum_sign): New macros.	1992-09-05 02:02:17 +00:00