Fix issue with class name TDZ in computed property names

test/mjsunit/harmony/computed-property-names.js

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Flags: --harmony-computed-property-names
 
 
 function ID(x) {
   return x;
 }
@@ skipping 259 matching lines @@
   assertEquals(proto, object.__proto__);
   assertTrue(object.hasOwnProperty('__proto__'));
 
   object = {
     [ID('x')]: 'X',
     __proto__: proto
   };
   assertEquals('X', object.x);
   assertEquals(proto, Object.getPrototypeOf(object));
 })();
+
+
+(function TestExceptionInName() {
+  function MyError() {};
+  function throwMyError() {
+    throw new MyError();
+  }
+  assertThrows(function() {
+    var o = {
+      [throwMyError()]: 42
+    };
+  }, MyError);
+  assertThrows(function() {
+    var o = {
+      get [throwMyError()]() { return 42; }
+    };
+  }, MyError);
+  assertThrows(function() {
+    var o = {
+      set [throwMyError()](_) { }
+    };
+  }, MyError);
+})();