michael@0: // Control can exit a for-of loop via throw.
michael@0: 
michael@0: function f() {
michael@0:     for (var a of [1, 2, 3]) {
michael@0:         for (var b of [1, 2, 3]) {
michael@0:             for (var c of [1, 2, 3]) {
michael@0:                 if (a !== b && b !== c && c !== a)
michael@0:                     throw [a, b, c];
michael@0:             }
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: var x = null;
michael@0: try {
michael@0:     f();
michael@0: } catch (exc) {
michael@0:     x = exc.join("");
michael@0: }
michael@0: assertEq(x, "123");