michael@0: // Constant folding does not affect strict delete.
michael@0: 
michael@0: function f(x) {
michael@0:     "use strict";
michael@0: 
michael@0:     // This senseless delete-expression is legal even in strict mode. Per ES5.1
michael@0:     // 11.4.1 step 2, it does nothing and returns true.
michael@0:     return delete (1 ? x : x);
michael@0: }
michael@0: assertEq(f(), true);