CallICStub with a "never patch" approach until customization.

test/mjsunit/debug-liveedit-newsource.js

 // Copyright 2010 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 14 matching lines @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // Flags: --expose-debug-as debug
 // Get the Debug object exposed from the debug context global object.
 
 Debug = debug.Debug
 
 eval("var something1 = 25; \n"
      + "var something2 = 2010; \n"
+     + "// Array(); \n"
      + "function ChooseAnimal() {\n"
      + "  return 'Cat';\n"
      + "} \n"
      + "function ChooseFurniture() {\n"
      + "  return 'Table';\n"
      + "} \n"
      + "function ChooseNumber() { return 17; } \n"
      + "ChooseAnimal.Factory = function Factory() {\n"
      + "  return function FactoryImpl(name) {\n"
      + "    return 'Help ' + name;\n"
      + "  }\n"
      + "}\n");
 
 assertEquals("Cat", ChooseAnimal());
 assertEquals(25, something1);
 
 var script = Debug.findScript(ChooseAnimal);
 
 var new_source = script.source.replace("Cat", "Cap' + 'yb' + 'ara");
 var new_source = new_source.replace("25", "26");
 var new_source = new_source.replace("Help", "Hello");
 var new_source = new_source.replace("17", "18");
+// The call to array causes a change in the number of type feedback slots for
+// the script.
+//
+// TODO(mvstanton): For now, the inclusion of the Array() call at the top level
+// of the script causes us to visit a corner case, but I'd like to validate
+// correctness more explicitly.
+var new_source = new_source.replace("// Array", "Array");
 print("new source: " + new_source);
 
 var change_log = new Array();
 var result = Debug.LiveEdit.SetScriptSource(script, new_source, false, change_log);
 print("Result: " + JSON.stringify(result) + "\n");
 print("Change log: " + JSON.stringify(change_log) + "\n");
 
 assertEquals("Capybara", ChooseAnimal());
 // Global variable do not get changed (without restarting script).
 assertEquals(25, something1);
 // We should support changes in oneliners.
 assertEquals(18, ChooseNumber());
 assertEquals("Hello Peter", ChooseAnimal.Factory()("Peter"));