On 09/16/2016 05:01 AM, Marek Polacek wrote:
@@ -5853,7 +5853,16 @@ cp_build_unary_op (enum tree_code code, tree xarg, bool
noconvert,
arg, true)))
errstring = _("wrong type argument to bit-complement");
else if (!noconvert && CP_INTEGRAL_TYPE_P (TREE_TYPE (arg)))
- arg = cp_perform_integral_promotions (arg, complain);
+ {
+ /* Warn if the expression has boolean value. */
+ location_t location = EXPR_LOC_OR_LOC (arg, input_location);
Let's move this variable to the beginning of the function; hopefully it
will become a parameter soon.
+ if ((TREE_CODE (TREE_TYPE (arg)) == BOOLEAN_TYPE
+ || truth_value_p (TREE_CODE (arg)))
You shouldn't need to check truth_value_p; in C++ all truth operations
have type bool.
+ && warning_at (location, OPT_Wbool_operation,
+ "%<~%> on a boolean expression"))
And let's refer to "expression of type bool" rather than "boolean
expression".
Jason
