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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "base_refcounted.h"
      6 
      7 #include <cstddef>
      8 
      9 namespace {
     10 
     11 // Unsafe; should error.
     12 class AnonymousDerivedProtectedToPublicInImpl
     13     : public ProtectedRefCountedVirtualDtorInHeader {
     14  public:
     15   AnonymousDerivedProtectedToPublicInImpl() {}
     16   virtual ~AnonymousDerivedProtectedToPublicInImpl() {}
     17 };
     18 
     19 // Unsafe; but we should only warn on the base class.
     20 class AnonymousDerivedProtectedOnDerived
     21     : public ProtectedRefCountedDtorInHeader {
     22  protected:
     23   ~AnonymousDerivedProtectedOnDerived() {}
     24 };
     25 
     26 }  // namespace
     27 
     28 // Unsafe; should error.
     29 class PublicRefCountedDtorInImpl
     30     : public base::RefCounted<PublicRefCountedDtorInImpl> {
     31  public:
     32   PublicRefCountedDtorInImpl() {}
     33   ~PublicRefCountedDtorInImpl() {}
     34 
     35  private:
     36   friend class base::RefCounted<PublicRefCountedDtorInImpl>;
     37 };
     38 
     39 class Foo {
     40  public:
     41   class BarInterface {
     42    protected:
     43     virtual ~BarInterface() {}
     44   };
     45 
     46   typedef base::RefCounted<BarInterface> RefCountedBar;
     47   typedef RefCountedBar AnotherTypedef;
     48 };
     49 
     50 class Baz {
     51  public:
     52   typedef typename Foo::AnotherTypedef MyLocalTypedef;
     53 };
     54 
     55 // Unsafe; should error.
     56 class UnsafeTypedefChainInImpl : public Baz::MyLocalTypedef {
     57  public:
     58   UnsafeTypedefChainInImpl() {}
     59   ~UnsafeTypedefChainInImpl() {}
     60 };
     61 
     62 int main() {
     63   PublicRefCountedDtorInHeader bad;
     64   PublicRefCountedDtorInImpl also_bad;
     65 
     66   ProtectedRefCountedDtorInHeader* even_badder = NULL;
     67   PrivateRefCountedDtorInHeader* private_ok = NULL;
     68 
     69   DerivedProtectedToPublicInHeader still_bad;
     70   PublicRefCountedThreadSafeDtorInHeader another_bad_variation;
     71   AnonymousDerivedProtectedToPublicInImpl and_this_is_bad_too;
     72   ImplicitDerivedProtectedToPublicInHeader bad_yet_again;
     73   UnsafeTypedefChainInImpl and_again_this_is_bad;
     74 
     75   WebKitPublicDtorInHeader ignored;
     76   WebKitDerivedPublicDtorInHeader still_ignored;
     77 
     78   return 0;
     79 }
     80