Fix issue with running some constructors having only this.x = ... assignments.

If we had compiled the comment instead of the code it would have worked.

BUG=483
TEST=mjsunit/regress/regress-483.js
Review URL: http://codereview.chromium.org/332007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3120 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/heap.cc

@@ -2257,7 +2257,8 @@ Object* Heap::AllocateInitialMap(JSFunction* fun) {
   // constructed without having these properties.
   ASSERT(in_object_properties <= Map::kMaxPreAllocatedPropertyFields);
   if (fun->shared()->has_only_this_property_assignments() &&
-      fun->shared()->this_property_assignments_count() > 0) {
+      fun->shared()->this_property_assignments_count() > 0 &&
+      fun->shared()->has_only_simple_this_property_assignments()) {
     int count = fun->shared()->this_property_assignments_count();
     if (count > in_object_properties) {
       count = in_object_properties;

test/mjsunit/regress/regress-483.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
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+function X() {
+  this.x = this.x.x;
+}
+
+X.prototype.x = {x:1}
+
+new X()
+