Fix GCC 4.7 warnings:

src/ic.cc

 // Copyright 2011 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 604 matching lines @@
             argc, kind_, extra_state, name, receiver, global, cell, function);
       } else {
         // There is only one shared stub for calling normalized
         // properties. It does not traverse the prototype chain, so the
         // property must be found in the receiver for the stub to be
         // applicable.
         if (!holder.is_identical_to(receiver)) return Handle<Code>::null();
         return isolate()->stub_cache()->ComputeCallNormal(
             argc, kind_, extra_state);
       }
-      break;
+      return Handle<Code>::null();

[Vyacheslav Egorov (Chromium), 2011/12/20 15:45:14]

ditto. what does compiler say? this can never be reached both branches of the if
statement end with returns.

     }
     case INTERCEPTOR:
       ASSERT(HasInterceptorGetter(*holder));
       return isolate()->stub_cache()->ComputeCallInterceptor(
           argc, kind_, extra_state, name, object, holder);
     default:
       return Handle<Code>::null();
   }
 }
 
@@ skipping 1787 matching lines @@
 #undef ADDR
 };
 
 
 Address IC::AddressFromUtilityId(IC::UtilityId id) {
   return IC_utilities[id];
 }
 
 
 } }  // namespace v8::internal