1 files changed, 57 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/expressions/yield/star-rhs-iter-thrw-thrw-get-err.js b/js/src/tests/test262/language/expressions/yield/star-rhs-iter-thrw-thrw-get-err.js
new file mode 100644
index 0000000000..23d11ba8dc
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/yield/star-rhs-iter-thrw-thrw-get-err.js
@@ -0,0 +1,57 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-generator-function-definitions-runtime-semantics-evaluation
+es6id: 14.4.14
+description: Abrupt completion returned when accessing iterator `throw` method
+info: |
+  YieldExpression : yield * AssignmentExpression
+
+  1. Let exprRef be the result of evaluating AssignmentExpression.
+  2. Let value be ? GetValue(exprRef).
+  3. Let iterator be ? GetIterator(value).
+  4. Let received be NormalCompletion(undefined).
+  5. Repeat
+     a. If received.[[Type]] is normal, then
+        [...]
+     b. Else if received.[[Type]] is throw, then
+        i. Let throw be ? GetMethod(iterator, "throw").
+features: [generators, Symbol.iterator]
+---*/
+
+var thrown = new Test262Error();
+var badIter = {};
+var poisonedThrow = {
+  next: function() {
+    return { done: false };
+  }
+};
+Object.defineProperty(poisonedThrow, 'throw', {
+  get: function() {
+    throw thrown;
+  }
+});
+badIter[Symbol.iterator] = function() {
+  return poisonedThrow;
+};
+function* g() {
+  try {
+    yield * badIter;
+  } catch (err) {
+    caught = err;
+  }
+}
+var iter = g();
+var result, caught;
+
+iter.next();
+
+assert.sameValue(caught, undefined, '`throw` property not accesed eagerly');
+
+result = iter.throw();
+
+assert.sameValue(result.value, undefined);
+assert.sameValue(result.done, true);
+assert.sameValue(caught, thrown);
+
+reportCompare(0, 0);