Merged r11831 into trunk branch.

test/mjsunit/fast-prototype.js

Index: test/mjsunit/fast-prototype.js
diff --git a/test/mjsunit/fast-prototype.js b/test/mjsunit/fast-prototype.js
index f2fc20228bf0f6caabb841734ecd953ad20c88d2..7fd73a4e1221a4cf4b6bc95ed6e5099d90bacd06 100644
--- a/test/mjsunit/fast-prototype.js
+++ b/test/mjsunit/fast-prototype.js
@@ -71,8 +71,8 @@ function test(use_new, add_first, set__proto__, same_map_as) {
     // Still fast
     assertTrue(%HasFastProperties(proto));
     AddProps(proto);
-    // Setting the bit means it is still fast with all these properties.
-    assertTrue(%HasFastProperties(proto));
+    // After we add all those properties it went slow mode again :-(
+    assertFalse(%HasFastProperties(proto));
   }
   if (same_map_as && !add_first) {
     assertTrue(%HaveSameMap(same_map_as, proto));