compilerplugins/clang/test/refcounting.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include <sal/config.h>
  11
  12 #include <memory>
  13 #include <rtl/ref.hxx>
  14 #include <boost/intrusive_ptr.hpp>
  15 #include <com/sun/star/uno/XInterface.hpp>
  16 #include <cppuhelper/weak.hxx>
  17 #include <unotools/weakref.hxx>
  18
  19 struct UnoObject : public cppu::OWeakObject
  20 {
  21 };
  22 struct UnoSubObject : public UnoObject
  23 {
  24 };
  25
  26 //
  27 // Note, getting duplicate warnings for some reason I cannot fathom
  28 //
  29
  30 struct Foo
  31 {
  32     // expected-error@+2 {{cppu::OWeakObject subclass 'UnoObject' being managed via smart pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
  33     // expected-error@+1 {{cppu::OWeakObject subclass 'UnoObject' being managed via smart pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
  34     std::unique_ptr<UnoObject> m_foo1;
  35     // expected-error@+2 {{cppu::OWeakObject subclass 'UnoObject' being managed via smart pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
  36     // expected-error@+1 {{cppu::OWeakObject subclass 'UnoObject' being managed via smart pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
  37     std::shared_ptr<UnoObject> m_foo2;
  38     // expected-error@+2 {{cppu::OWeakObject subclass 'UnoObject' being managed via smart pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
  39     // expected-error@+1 {{cppu::OWeakObject subclass 'UnoObject' being managed via smart pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
  40     boost::intrusive_ptr<UnoObject> m_foo3;
  41     rtl::Reference<UnoObject> m_foo4; // no warning expected
  42 };
  43
  44 // expected-error@+2 {{cppu::OWeakObject subclass 'UnoObject' being managed via smart pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
  45 // expected-error@+1 {{cppu::OWeakObject subclass 'UnoObject' being managed via smart pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
  46 std::unique_ptr<UnoObject> foo1();
  47 rtl::Reference<UnoObject> foo2(); // no warning expected
  48 // expected-error@+2 {{cppu::OWeakObject subclass 'UnoObject' being managed via smart pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
  49 // expected-error@+1 {{cppu::OWeakObject subclass 'UnoObject' being managed via smart pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
  50 void foo3(std::unique_ptr<UnoObject> p);
  51
  52 void test2(UnoObject* pUnoObject)
  53 {
  54     // expected-error@+1 {{cppu::OWeakObject subclass 'UnoObject' being deleted via delete, should be managed via rtl::Reference [loplugin:refcounting]}}
  55     delete pUnoObject;
  56 }
  57
  58 template <typename T> struct Dependent : T
  59 {
  60     void f() { delete this; }
  61     //TODO: missing expected error@+1 {{cppu::OWeakObject subclass 'Dependent<UnoObject>' being deleted via delete, should be managed via rtl::Reference [loplugin:refcounting]}}
  62     void g() { delete this; }
  63 };
  64 struct Dummy
  65 {
  66 };
  67 void dummy(Dependent<Dummy>* p1, Dependent<UnoObject>* p2)
  68 {
  69     p1->f();
  70     p2->g();
  71 }
  72
  73 void foo4()
  74 {
  75     // expected-error@+1 {{cppu::OWeakObject subclass 'UnoObject' being managed via raw pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
  76     UnoObject* p = new UnoObject;
  77     (void)p;
  78     // expected-error@+1 {{cppu::OWeakObject subclass 'UnoObject' being managed via raw pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
  79     p = new UnoObject;
  80 }
  81
  82 UnoObject* foo5()
  83 {
  84     // expected-error@+1 {{new object of cppu::OWeakObject subclass 'UnoObject' being returned via raw pointer, should be returned by via rtl::Reference [loplugin:refcounting]}}
  85     return new UnoObject;
  86 }
  87 rtl::Reference<UnoObject> foo6()
  88 {
  89     // no warning expected
  90     return new UnoObject;
  91 }
  92 const rtl::Reference<UnoObject>& getConstRef();
  93 void foo7()
  94 {
  95     // expected-error@+1 {{cppu::OWeakObject subclass 'UnoSubObject' being managed via raw pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
  96     UnoSubObject* p1 = static_cast<UnoSubObject*>(foo6().get());
  97     (void)p1;
  98     // expected-error@+1 {{cppu::OWeakObject subclass 'UnoSubObject' being managed via raw pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
  99     p1 = static_cast<UnoSubObject*>(foo6().get());
 100
 101     rtl::Reference<UnoObject> u2;
 102     // no warning expected
 103     UnoSubObject* p2 = static_cast<UnoSubObject*>(u2.get());
 104     (void)p2;
 105     p2 = static_cast<UnoSubObject*>(u2.get());
 106     // no warning expected
 107     UnoSubObject* p3 = static_cast<UnoSubObject*>(getConstRef().get());
 108     (void)p3;
 109     p3 = static_cast<UnoSubObject*>(getConstRef().get());
 110 }
 111
 112 const unotools::WeakReference<UnoObject>& getWeakRef();
 113 void foo8()
 114 {
 115     // expected-error@+1 {{weak object being converted to strong, and then the reference dropped, and managed via raw pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
 116     UnoSubObject* p1 = static_cast<UnoSubObject*>(getWeakRef().get().get());
 117     (void)p1;
 118
 119     // expected-error@+1 {{weak object being converted to strong, and then the reference dropped, and managed via raw pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
 120     UnoObject* p2 = getWeakRef().get().get();
 121     (void)p2;
 122
 123     unotools::WeakReference<UnoObject> weak1;
 124     // expected-error@+1 {{weak object being converted to strong, and then the reference dropped, and managed via raw pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
 125     UnoSubObject* p3 = dynamic_cast<UnoSubObject*>(weak1.get().get());
 126     (void)p3;
 127
 128     // expected-error@+1 {{weak object being converted to strong, and then the reference dropped, and managed via raw pointer, should be managed via rtl::Reference [loplugin:refcounting]}}
 129     UnoObject* p4 = weak1.get().get();
 130     (void)p4;
 131 }
 132 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */