tools/clang/plugins/tests/base_refcounted.cpp

   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   ~AnonymousDerivedProtectedToPublicInImpl() override {}
  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 }