build/clang-plugin/tests/TestNeedsNoVTableType.cpp

   1 #define MOZ_NEEDS_NO_VTABLE_TYPE __attribute__((annotate("moz_needs_no_vtable_type")))
   2
   3 template <class T>
   4 struct MOZ_NEEDS_NO_VTABLE_TYPE PickyConsumer { // expected-error {{'PickyConsumer<B>' cannot be instantiated because 'B' has a VTable}} expected-error {{'PickyConsumer<E>' cannot be instantiated because 'E' has a VTable}} expected-error {{'PickyConsumer<F>' cannot be instantiated because 'F' has a VTable}} expected-error {{'PickyConsumer<G>' cannot be instantiated because 'G' has a VTable}}
   5   T *m;
   6 };
   7
   8 template <class T>
   9 struct MOZ_NEEDS_NO_VTABLE_TYPE PickyConsumer_A { // expected-error {{'PickyConsumer_A<B>' cannot be instantiated because 'B' has a VTable}} expected-error {{'PickyConsumer_A<E>' cannot be instantiated because 'E' has a VTable}} expected-error {{'PickyConsumer_A<F>' cannot be instantiated because 'F' has a VTable}} expected-error {{'PickyConsumer_A<G>' cannot be instantiated because 'G' has a VTable}}
  10   T *m;
  11 };
  12 template <class T>
  13 struct PickyConsumerWrapper {
  14   PickyConsumer_A<T> m; // expected-note {{bad instantiation of 'PickyConsumer_A<B>' requested here}} expected-note {{bad instantiation of 'PickyConsumer_A<E>' requested here}} expected-note {{bad instantiation of 'PickyConsumer_A<F>' requested here}} expected-note {{bad instantiation of 'PickyConsumer_A<G>' requested here}}
  15 };
  16
  17 template <class T>
  18 struct MOZ_NEEDS_NO_VTABLE_TYPE PickyConsumer_B { // expected-error {{'PickyConsumer_B<B>' cannot be instantiated because 'B' has a VTable}} expected-error {{'PickyConsumer_B<E>' cannot be instantiated because 'E' has a VTable}} expected-error {{'PickyConsumer_B<F>' cannot be instantiated because 'F' has a VTable}} expected-error {{'PickyConsumer_B<G>' cannot be instantiated because 'G' has a VTable}}
  19   T *m;
  20 };
  21 template <class T>
  22 struct PickyConsumerSubclass : PickyConsumer_B<T> {}; // expected-note {{bad instantiation of 'PickyConsumer_B<B>' requested here}} expected-note {{bad instantiation of 'PickyConsumer_B<E>' requested here}} expected-note {{bad instantiation of 'PickyConsumer_B<F>' requested here}} expected-note {{bad instantiation of 'PickyConsumer_B<G>' requested here}}
  23
  24 template <class T>
  25 struct NonPickyConsumer {
  26   T *m;
  27 };
  28
  29 struct A {};
  30 struct B : virtual A {};
  31 struct C : A {};
  32 struct D {
  33   void d();
  34 };
  35 struct E {
  36   virtual void e();
  37 };
  38 struct F : E {
  39   void e() final;
  40 };
  41 struct G {
  42   virtual void e() = 0;
  43 };
  44
  45 void f() {
  46   {
  47     PickyConsumer<A> a1;
  48     PickyConsumerWrapper<A> a2;
  49     PickyConsumerSubclass<A> a3;
  50     NonPickyConsumer<A> a4;
  51   }
  52
  53   {
  54     PickyConsumer<B> a1; // expected-note {{bad instantiation of 'PickyConsumer<B>' requested here}}
  55     PickyConsumerWrapper<B> a2;
  56     PickyConsumerSubclass<B> a3;
  57     NonPickyConsumer<B> a4;
  58   }
  59
  60   {
  61     PickyConsumer<C> a1;
  62     PickyConsumerWrapper<C> a2;
  63     PickyConsumerSubclass<C> a3;
  64     NonPickyConsumer<C> a4;
  65   }
  66
  67   {
  68     PickyConsumer<D> a1;
  69     PickyConsumerWrapper<D> a2;
  70     PickyConsumerSubclass<D> a3;
  71     NonPickyConsumer<D> a4;
  72   }
  73
  74   {
  75     PickyConsumer<E> a1; // expected-note {{bad instantiation of 'PickyConsumer<E>' requested here}}
  76     PickyConsumerWrapper<E> a2;
  77     PickyConsumerSubclass<E> a3;
  78     NonPickyConsumer<E> a4;
  79   }
  80
  81   {
  82     PickyConsumer<F> a1; // expected-note {{bad instantiation of 'PickyConsumer<F>' requested here}}
  83     PickyConsumerWrapper<F> a2;
  84     PickyConsumerSubclass<F> a3;
  85     NonPickyConsumer<F> a4;
  86   }
  87
  88   {
  89     PickyConsumer<G> a1; // expected-note {{bad instantiation of 'PickyConsumer<G>' requested here}}
  90     PickyConsumerWrapper<G> a2;
  91     PickyConsumerSubclass<G> a3;
  92     NonPickyConsumer<G> a4;
  93   }
  94 }