Fix compilation with clang

test/cctest/test-api.cc

 // Copyright 2012 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 6436 matching lines @@
       "  testBool();"
       "}\n"
       "\"PASS\"",
       "PASS");
 }
 
 
 template <typename T> static void USE(T) { }
 
 
-// This test is not intended to be run, just type checked.
-static inline void PersistentHandles(v8::Isolate* isolate) {
-  USE(PersistentHandles);
+// The point of this test is type checking. We run it only so compilers
+// don't complain about an unused function.
+TEST(PersistentHandles) {
+  LocalContext env;
+  v8::Isolate* isolate = CcTest::isolate();
+  v8::HandleScope scope(isolate);
   Local<String> str = v8_str("foo");
   v8::Persistent<String> p_str(isolate, str);
   p_str.Reset();
   Local<Script> scr = Script::Compile(v8_str(""));
   v8::Persistent<Script> p_scr(isolate, scr);
   p_scr.Reset();
   Local<ObjectTemplate> templ = ObjectTemplate::New();
   v8::Persistent<ObjectTemplate> p_templ(isolate, templ);
   p_templ.Reset();
 }
@@ skipping 11611 matching lines @@
       "  var r1_ = %_GetFromCache(0, key1);"
       "  if (r1 !== r1_)"
       "    return 'Different results for ' + key1 + ': ' + r1 + ' vs. ' + r1_;"
       "  return 'PASSED';"
       "})()";
   CcTest::heap()->ClearJSFunctionResultCaches();
   ExpectString(code, "PASSED");
 }
 
 
-static const int k0CacheSize = 16;
-
 THREADED_TEST(FillJSFunctionResultCache) {
   i::FLAG_allow_natives_syntax = true;
   LocalContext context;
   v8::HandleScope scope(context->GetIsolate());
 
   const char* code =
       "(function() {"
       "  var k = 'a';"
       "  var r = %_GetFromCache(0, k);"
       "  for (var i = 0; i < 16; i++) {"
@@ skipping 2769 matching lines @@
   }
   for (int i = 0; i < runs; i++) {
     Local<String> expected;
     if (i != 0) {
       CHECK_EQ(v8_str("escape value"), values[i]);
     } else {
       CHECK(values[i].IsEmpty());
     }
   }
 }