Added a workaroung for a GCC visibility bug.

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 16161 matching lines @@
                "  try {"
                "    return readCell();"
                "  } catch(e) {"
                "    return e.toString();"
                "  }"
                "})()",
                "ReferenceError: cell is not defined");
 }
 
 
+class Visitor42 : public v8::PersistentHandleVisitor {
+ public:
+  explicit Visitor42(v8::Persistent<v8::Object> object)
+      : counter_(0), object_(object) { }
+
+  virtual void VisitPersistentHandle(Persistent<Value> value,
+                                     uint16_t class_id) {
+    if (class_id == 42) {
+      CHECK(value->IsObject());
+      v8::Persistent<v8::Object> visited =
+          v8::Persistent<v8::Object>::Cast(value);
+      CHECK_EQ(42, visited.WrapperClassId());
+      CHECK_EQ(object_, visited);
+      ++counter_;
+    }
+  }
+
+  int counter_;
+  v8::Persistent<v8::Object> object_;
+};
+
+
 TEST(PersistentHandleVisitor) {
   v8::HandleScope scope;
   LocalContext context;
   v8::Persistent<v8::Object> object =
       v8::Persistent<v8::Object>::New(v8::Object::New());
   CHECK_EQ(0, object.WrapperClassId());
   object.SetWrapperClassId(42);
   CHECK_EQ(42, object.WrapperClassId());
 
-  class Visitor : public v8::PersistentHandleVisitor {
-   public:
-    explicit Visitor(v8::Persistent<v8::Object> object)
-      : counter_(0), object_(object) { }
-
-    virtual void VisitPersistentHandle(Persistent<Value> value,
-                                       uint16_t class_id) {
-      if (class_id == 42) {
-        CHECK(value->IsObject());
-        v8::Persistent<v8::Object> visited =
-            v8::Persistent<v8::Object>::Cast(value);
-        CHECK_EQ(42, visited.WrapperClassId());
-        CHECK_EQ(object_, visited);
-        ++counter_;
-      }
-    }
-
-    int counter_;
-    v8::Persistent<v8::Object> object_;
-  } visitor(object);
-
+  Visitor42 visitor(object);
   v8::V8::VisitHandlesWithClassIds(&visitor);
   CHECK_EQ(1, visitor.counter_);
 
   object.Dispose();
 }
 
 
 TEST(RegExp) {
   v8::HandleScope scope;
   LocalContext context;
@@ skipping 1440 matching lines @@
 
   i::Semaphore* sem_;
   volatile int sem_value_;
 };
 
 
 THREADED_TEST(SemaphoreInterruption) {
   ThreadInterruptTest().RunTest();
 }
 #endif  // WIN32