Remove default case from switch in DependentCode::DependencyGroupName.

src/objects.cc

 // Copyright 2013 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/v8.h"
 
 #include "src/accessors.h"
 #include "src/allocation-site-scopes.h"
 #include "src/api.h"
 #include "src/arguments.h"
@@ skipping 11659 matching lines @@
     case kPropertyCellChangedGroup:
       return "property-cell-changed";
     case kFieldTypeGroup:
       return "field-type";
     case kInitialMapChangedGroup:
       return "initial-map-changed";
     case kAllocationSiteTenuringChangedGroup:
       return "allocation-site-tenuring-changed";
     case kAllocationSiteTransitionChangedGroup:
       return "allocation-site-transition-changed";
-    default:
-      UNREACHABLE();
-      return "?";
+    case kGroupCount:
+      break;  // Enum count, not a valid group value.
   }
+  UNREACHABLE();
+  return "?";
 }
 
 
 Handle<Map> Map::TransitionToPrototype(Handle<Map> map,
                                        Handle<Object> prototype) {
   Handle<Map> new_map = GetPrototypeTransition(map, prototype);
   if (new_map.is_null()) {
     new_map = Copy(map);
     PutPrototypeTransition(map, prototype, new_map);
     new_map->set_prototype(*prototype);
@@ skipping 4747 matching lines @@
 #define ERROR_MESSAGES_TEXTS(C, T) T,
   static const char* error_messages_[] = {
       ERROR_MESSAGES_LIST(ERROR_MESSAGES_TEXTS)
   };
 #undef ERROR_MESSAGES_TEXTS
   return error_messages_[reason];
 }
 
 
 } }  // namespace v8::internal