build/clang-plugin/tests/TestNoAutoType.cpp

   1 #define MOZ_NON_AUTOABLE __attribute__((annotate("moz_non_autoable")))
   2
   3 template<class T>
   4 struct MOZ_NON_AUTOABLE ExplicitTypeTemplate {};
   5 struct MOZ_NON_AUTOABLE ExplicitType {};
   6 struct NonExplicitType {};
   7
   8 void f() {
   9   {
  10     ExplicitType a;
  11     auto b = a; // expected-error {{Cannot use auto to declare a variable of type 'ExplicitType'}} expected-note {{Please write out this type explicitly}}
  12     auto &br = a; // expected-error {{Cannot use auto to declare a variable of type 'ExplicitType &'}} expected-note {{Please write out this type explicitly}}
  13     const auto &brc = a; // expected-error {{Cannot use auto to declare a variable of type 'const ExplicitType &'}} expected-note {{Please write out this type explicitly}}
  14     auto *bp = &a; // expected-error {{Cannot use auto to declare a variable of type 'ExplicitType *'}} expected-note {{Please write out this type explicitly}}
  15     const auto *bpc = &a; // expected-error {{Cannot use auto to declare a variable of type 'const ExplicitType *'}} expected-note {{Please write out this type explicitly}}
  16   }
  17
  18   {
  19     ExplicitTypeTemplate<int> a;
  20     auto b = a; // expected-error {{Cannot use auto to declare a variable of type 'ExplicitTypeTemplate<int>'}} expected-note {{Please write out this type explicitly}}
  21     auto &br = a; // expected-error {{Cannot use auto to declare a variable of type 'ExplicitTypeTemplate<int> &'}} expected-note {{Please write out this type explicitly}}
  22     const auto &brc = a; // expected-error {{Cannot use auto to declare a variable of type 'const ExplicitTypeTemplate<int> &'}} expected-note {{Please write out this type explicitly}}
  23     auto *bp = &a; // expected-error {{Cannot use auto to declare a variable of type 'ExplicitTypeTemplate<int> *'}} expected-note {{Please write out this type explicitly}}
  24     const auto *bpc = &a; // expected-error {{Cannot use auto to declare a variable of type 'const ExplicitTypeTemplate<int> *'}} expected-note {{Please write out this type explicitly}}
  25   }
  26
  27   {
  28     NonExplicitType c;
  29     auto d = c;
  30     auto &dr = c;
  31     const auto &drc = c;
  32     auto *dp = &c;
  33     const auto *dpc = &c;
  34   }
  35 }
  36
  37 ExplicitType A;
  38 auto B = A; // expected-error {{Cannot use auto to declare a variable of type 'ExplicitType'}} expected-note {{Please write out this type explicitly}}
  39
  40 NonExplicitType C;
  41 auto D = C;