more accurate assertion

test/baidu_thread_local_unittest.cpp

@@ -166,17 +166,17 @@ void fun2() {
 }
 
 void fun3(void* arg) {
-    get_oss() << "fun3(" << arg << ")" << std::endl;
+    get_oss() << "fun3(" << (uintptr_t)arg << ")" << std::endl;
 }
 
 void fun4(void* arg) {
-    get_oss() << "fun4(" << arg << ")" << std::endl;
+    get_oss() << "fun4(" << (uintptr_t)arg << ")" << std::endl;
 }
 
 static void check_result() {
   // Don't use gtest function since this function might be invoked when the main
   // thread quits, instances required by gtest functions are likely destroyed.
-  assert (get_oss().str() == "fun4(0)\nfun3(0x2)\nfun2\n");
+  assert(get_oss().str() == "fun4(0)\nfun3(2)\nfun2\n");
 }
 
 TEST_F(BaiduThreadLocalTest, call_order_and_cancel) {