Change the handling of catch blocks to use context extension objects...

test/cctest/test-debug.cc

 // Copyright 2007-2008 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 2436 matching lines @@
   expected_step_sequence = "bcc";
   b->Call(env->Global(), 0, NULL);
   CHECK_EQ(strlen(expected_step_sequence), break_point_hit_count);
 
   // Step through invocation of d + e.
   v8::Local<v8::Function> d = CompileFunction(&env, src, "d");
   SetBreakPoint(d, 0);
   ChangeBreakOnException(false, true);
   step_action = StepIn;
   break_point_hit_count = 0;
-  expected_step_sequence = "ddedd";
+  expected_step_sequence = "dded";
   d->Call(env->Global(), 0, NULL);
   CHECK_EQ(strlen(expected_step_sequence), break_point_hit_count);
 
   // Step through invocation of d + e now with break on caught exceptions.
   ChangeBreakOnException(true, true);
   step_action = StepIn;
   break_point_hit_count = 0;
-  expected_step_sequence = "ddeedd";
+  expected_step_sequence = "ddeed";
   d->Call(env->Global(), 0, NULL);
   CHECK_EQ(strlen(expected_step_sequence), break_point_hit_count);
 
   // Step through invocation of f + g + h.
   v8::Local<v8::Function> f = CompileFunction(&env, src, "f");
   SetBreakPoint(f, 0);
   ChangeBreakOnException(false, true);
   step_action = StepIn;
   break_point_hit_count = 0;
-  expected_step_sequence = "ffghff";
+  expected_step_sequence = "ffghf";
   f->Call(env->Global(), 0, NULL);
   CHECK_EQ(strlen(expected_step_sequence), break_point_hit_count);
 
   // Step through invocation of f + g + h now with break on caught exceptions.
   ChangeBreakOnException(true, true);
   step_action = StepIn;
   break_point_hit_count = 0;
-  expected_step_sequence = "ffghhff";
+  expected_step_sequence = "ffghhf";
   f->Call(env->Global(), 0, NULL);
   CHECK_EQ(strlen(expected_step_sequence), break_point_hit_count);
 
   // Get rid of the debug event listener.
   v8::Debug::RemoveDebugEventListener(DebugEventStepSequence);
 }
 
 
 TEST(DebugBreak) {
   v8::HandleScope scope;
@@ skipping 926 matching lines @@
                                       "  CheckSourceLine(2)\n"
                                       "  CheckSourceLine(3)\n"
                                       "}; f()"))->Run();
 
   // Test that a parameter can be passed to a function called in the debugger.
   v8::Script::Compile(v8::String::New("CheckDataParameter()"))->Run();
 
   // Test that a function with closure can be run in the debugger.
   v8::Script::Compile(v8::String::New("CheckClosure()"))->Run();
 }