Make gcc 4.1 happy with NULL in EXPECT_EQ

base/thread_local_unittest.cc

 // Copyright (c) 2006-2008 The Chromium 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 "base/logging.h"
 #include "base/simple_thread.h"
 #include "base/thread_local.h"
 #include "base/waitable_event.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 67 matching lines @@
   base::WaitableEvent done(true, false);
 
   GetThreadLocal getter(&tlp, &done);
   getter.set_ptr(&tls_val);
 
   // Check that both threads defaulted to NULL.
   tls_val = kBogusPointer;
   done.Reset();
   tp1.AddWork(&getter);
   done.Wait();
-  EXPECT_EQ(NULL, tls_val);
+  EXPECT_EQ(static_cast<ThreadLocalTesterBase*>(NULL), tls_val);
 
   tls_val = kBogusPointer;
   done.Reset();
   tp2.AddWork(&getter);
   done.Wait();
-  EXPECT_EQ(NULL, tls_val);
+  EXPECT_EQ(static_cast<ThreadLocalTesterBase*>(NULL), tls_val);
 
 
   SetThreadLocal setter(&tlp, &done);
   setter.set_value(kBogusPointer);
 
   // Have thread 1 set their pointer value to kBogusPointer.
   done.Reset();
   tp1.AddWork(&setter);
   done.Wait();
 
   tls_val = NULL;
   done.Reset();
   tp1.AddWork(&getter);
   done.Wait();
   EXPECT_EQ(kBogusPointer, tls_val);
 
   // Make sure thread 2 is still NULL
   tls_val = kBogusPointer;
   done.Reset();
   tp2.AddWork(&getter);
   done.Wait();
-  EXPECT_EQ(NULL, tls_val);
+  EXPECT_EQ(static_cast<ThreadLocalTesterBase*>(NULL), tls_val);
 
   // Set thread 2 to kBogusPointer + 1.
   setter.set_value(kBogusPointer + 1);
 
   done.Reset();
   tp2.AddWork(&setter);
   done.Wait();
 
   tls_val = NULL;
   done.Reset();
@@ skipping 23 matching lines @@
     tlb.Set(true);
     EXPECT_EQ(true, tlb.Get());
   }
 
   // Our slot should have been freed, we're all reset.
   {
     base::ThreadLocalBoolean tlb;
     EXPECT_EQ(false, tlb.Get());
   }
 }