Move Error methods to C++

test/mjsunit/stack-traces.js

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 348 matching lines @@
 
 my_error = {};
 Object.preventExtensions(my_error);
 assertThrows(function() { Error.captureStackTrace(my_error); });
 
 var fake_error = {};
 my_error = new Error();
 var stolen_getter = Object.getOwnPropertyDescriptor(my_error, 'stack').get;
 Object.defineProperty(fake_error, 'stack', { get: stolen_getter });
 assertEquals(undefined, fake_error.stack);
+
+// Check that overwriting the stack property during stack trace formatting
+// does not crash.
+error = new Error();
+error.__defineGetter__("name", function() { error.stack = "abc"; });
+assertEquals("abc", error.stack);
+
+error = new Error();
+error.__defineGetter__("name", function() { delete error.stack; });
+assertEquals(undefined, error.stack);
+
+// Check that repeated trace collection does not crash.
+error = new Error();
+Error.captureStackTrace(error);