If an external string enters the symbol table, make sure to set the...

src/runtime.cc

 // Copyright 2006-2009 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 6507 matching lines @@
 }
 
 
 // If an object given is an external string, check that the underlying
 // resource is accessible. For other kinds of objects, always return true.
 static bool IsExternalStringValid(Object* str) {
   if (!str->IsString() || !StringShape(String::cast(str)).IsExternal()) {
     return true;
   }
   if (StringShape(String::cast(str)).IsAsciiRepresentation()) {
-    return ExternalAsciiString::cast(str)->resource() != 0;
+    return ExternalAsciiString::cast(str)->resource() != NULL;
   } else if (StringShape(String::cast(str)).IsTwoByteRepresentation()) {
-    return ExternalTwoByteString::cast(str)->resource() != 0;
+    return ExternalTwoByteString::cast(str)->resource() != NULL;
   } else {
     return true;
   }
 }
 
 
 // Helper function used by Runtime_DebugGetLoadedScripts below.
 static int DebugGetLoadedScripts(FixedArray* instances, int instances_size) {
   NoHandleAllocation ha;
   AssertNoAllocation no_alloc;
@@ skipping 412 matching lines @@
   } else {
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     Counters::gc_last_resort_from_js.Increment();
     Heap::CollectAllGarbage();
   }
 }
 
 
 } }  // namespace v8::internal