Revert revision 593. This was a cleanup change but it caused layout...

src/top.h

Index: src/top.h
===================================================================
--- src/top.h	(revision 614)
+++ src/top.h	(working copy)
@@ -53,9 +53,7 @@
   bool external_caught_exception_;
   v8::TryCatch* try_catch_handler_;
   SaveContext* save_context_;
-  // Flag indicating that the try_catch_handler_ contains an exception to be
-  // caught.
-  bool pending_external_caught_exception_;
+  v8::TryCatch* catcher_;
 
   // Stack.
   Address c_entry_fp_;  // the frame pointer of the top c entry frame
@@ -146,16 +144,10 @@
     thread_local_.scheduled_exception_ = Heap::the_hole_value();
   }
 
-  // Propagate the external caught exception flag. If there is no external
-  // caught exception always clear the TryCatch handler as it might contain
-  // an exception object from a throw which was bypassed by a finally block
-  // doing an explicit return/break/continue.
-  static void propagate_external_caught() {
-    if (has_pending_exception()) {
-      thread_local_.external_caught_exception_ =
-          thread_local_.pending_external_caught_exception_;
-    }
-    thread_local_.pending_external_caught_exception_ = false;
+  static void setup_external_caught() {
+    thread_local_.external_caught_exception_ =
+        (thread_local_.catcher_ != NULL) &&
+        (Top::thread_local_.try_catch_handler_ == Top::thread_local_.catcher_);
   }
 
   // Tells whether the current context has experienced an out of memory