Fix shared function info code replacement.

src/runtime.cc

 // Copyright 2012 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 2127 matching lines @@
 
   if (!JSFunction::EnsureCompiled(source, KEEP_EXCEPTION)) {
     return Failure::Exception();
   }
 
   // Set the code, scope info, formal parameter count, and the length
   // of the target shared function info.  Set the source code of the
   // target function to undefined.  SetCode is only used for built-in
   // constructors like String, Array, and Object, and some web code
   // doesn't like seeing source code for constructors.
-  target_shared->set_code(source_shared->code());
+  target_shared->ReplaceCode(source_shared->code());
   target_shared->set_scope_info(source_shared->scope_info());
   target_shared->set_length(source_shared->length());
   target_shared->set_formal_parameter_count(
       source_shared->formal_parameter_count());
   target_shared->set_script(isolate->heap()->undefined_value());
 
   // Since we don't store the source we should never optimize this.
   target_shared->code()->set_optimizable(false);
 
   // Clear the optimization hints related to the compiled code as these
@@ skipping 11461 matching lines @@
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     isolate->counters()->gc_last_resort_from_js()->Increment();
     isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags,
                                        "Runtime::PerformGC");
   }
 }
 
 
 } }  // namespace v8::internal