A refinement of cl 28068.

src/objects.cc

 // Copyright 2006-2008 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 6935 matching lines @@
   ASSERT(obj->HasFastProperties());
 
   return obj;
 }
 
 
 // Init line_ends array with code positions of line ends inside script source
 void Script::InitLineEnds() {
   if (!line_ends()->IsUndefined()) return;
 
-  if (source()->IsUndefined()) {
-    set_line_ends(*(Factory::NewArrayLiteral(0)));
+  if (!source()->IsString()) {
+    ASSERT(source()->IsUndefined());
+    set_line_ends(*(Factory::NewJSArray(0)));
     ASSERT(line_ends()->IsJSArray());
     return;
   }
 
   Handle<String> src(String::cast(source()));
   const int src_len = src->length();
   Handle<String> new_line = Factory::NewStringFromAscii(CStrVector("\n"));
 
   // Pass 1: Identify line count
   int line_count = 0;
@@ skipping 289 matching lines @@
   // No break point.
   if (break_point_objects()->IsUndefined()) return 0;
   // Single beak point.
   if (!break_point_objects()->IsFixedArray()) return 1;
   // Multiple break points.
   return FixedArray::cast(break_point_objects())->length();
 }
 
 
 } }  // namespace v8::internal