Fixing a subtle bug in receiver resolution when a thrown and caught function ...

src/objects-inl.h

Index: src/objects-inl.h
===================================================================
--- src/objects-inl.h	(revision 984)
+++ src/objects-inl.h	(working copy)
@@ -348,10 +348,17 @@
 bool Object::IsContext() {
   return Object::IsHeapObject()
     && (HeapObject::cast(this)->map() == Heap::context_map() ||
+        HeapObject::cast(this)->map() == Heap::catch_context_map() ||
         HeapObject::cast(this)->map() == Heap::global_context_map());
 }
 
 
+bool Object::IsCatchContext() {
+  return Object::IsHeapObject()
+    && HeapObject::cast(this)->map() == Heap::catch_context_map();
+}
+
+
 bool Object::IsGlobalContext() {
   return Object::IsHeapObject()
     && HeapObject::cast(this)->map() == Heap::global_context_map();