Propagate exceptions thrown when setting elements.

test/mjsunit/getter-in-prototype.js

Index: test/mjsunit/getter-in-prototype.js
diff --git a/test/mjsunit/getter-in-prototype.js b/test/mjsunit/getter-in-prototype.js
index dd26c533194c03b7703739d068ac095b48cb94c0..5563123e7969390ad24ef78af917951de7f3d2dd 100644
--- a/test/mjsunit/getter-in-prototype.js
+++ b/test/mjsunit/getter-in-prototype.js
@@ -31,9 +31,11 @@
 var o = {};
 var p = {};
 p.__defineGetter__('x', function(){});
+p.__defineGetter__(0, function(){});
 o.__proto__ = p;
 
 assertThrows("o.x = 42");
+assertThrows("o[0] = 42");
 
 function f() {
   with(o) {
@@ -48,3 +50,9 @@ function g() {
   x = 42;
 }
 assertThrows("g()");
+
+__proto__ = p;
+function g2() {
+  this[0] = 42;
+}
+assertThrows("g2()");