Fix external callback logging in profiler.

src/frames.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/frames.h"
 
 #include <sstream>
 
 #include "src/ast.h"
 #include "src/base/bits.h"
@@ skipping 316 matching lines @@
     AdvanceOneFrame();
     if (done()) return;
     if (frame_->is_java_script()) return;
     if (frame_->is_exit() && external_callback_scope_) {
       // Some of the EXIT frames may have ExternalCallbackScope allocated on
       // top of them. In that case the scope corresponds to the first EXIT
       // frame beneath it. There may be other EXIT frames on top of the
       // ExternalCallbackScope, just skip them as we cannot collect any useful
       // information about them.
       if (external_callback_scope_->scope_address() < frame_->fp()) {
-        Address* callback_address =
-            external_callback_scope_->callback_address();
-        if (*callback_address != NULL) {
-          frame_->state_.pc_address = callback_address;
-        }
+        frame_->state_.pc_address =
+            external_callback_scope_->callback_entrypoint_address();
         external_callback_scope_ = external_callback_scope_->previous();
         DCHECK(external_callback_scope_ == NULL ||
                external_callback_scope_->scope_address() > frame_->fp());
         return;
       }
     }
   }
 }
 
 
@@ skipping 1241 matching lines @@
   for (StackFrameIterator it(isolate); !it.done(); it.Advance()) {
     StackFrame* frame = AllocateFrameCopy(it.frame(), zone);
     list.Add(frame, zone);
   }
   return list.ToVector();
 }
 
 
 }  // namespace internal
 }  // namespace v8