clang/test/SemaTemplate/alias-template-deprecated.cpp

   1 // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
   2 //
   3 // This test checks that a deprecated attribute on an alias
   4 // template triggers a warning diagnostic when it is used.
   5
   6 template <typename T>
   7 struct NoAttr {
   8   void foo() {}
   9 };
  10
  11 // expected-note@+2 7{{'UsingWithAttr' has been explicitly marked deprecated here}}
  12 template <typename T>
  13 using UsingWithAttr __attribute__((deprecated)) = NoAttr<T>;
  14
  15 // expected-note@+1 {{'UsingInstWithAttr' has been explicitly marked deprecated here}}
  16 using UsingInstWithAttr __attribute__((deprecated)) = NoAttr<int>;
  17
  18 // expected-note@+1 {{'TDWithAttr' has been explicitly marked deprecated here}}
  19 typedef NoAttr<int> TDWithAttr __attribute__((deprecated));
  20
  21 // expected-warning@+1 {{'UsingWithAttr' is deprecated}}
  22 typedef UsingWithAttr<int> TDUsingWithAttr;
  23
  24 typedef NoAttr<int> TDNoAttr;
  25
  26 // expected-note@+1 {{'UsingTDWithAttr' has been explicitly marked deprecated here}}
  27 using UsingTDWithAttr __attribute__((deprecated)) = TDNoAttr;
  28
  29 struct S {
  30   NoAttr<float> f1;
  31   // expected-warning@+1 {{'UsingWithAttr' is deprecated}}
  32   UsingWithAttr<float> f2;
  33 };
  34
  35 // expected-warning@+1 {{'UsingWithAttr' is deprecated}}
  36 void foo(NoAttr<short> s1, UsingWithAttr<short> s2) {
  37 }
  38
  39 // expected-note@+2 {{'UsingWithCPPAttr' has been explicitly marked deprecated here}}
  40 template <typename T>
  41 using UsingWithCPPAttr [[deprecated]] = NoAttr<T>;
  42
  43 // expected-note@+1 {{'UsingInstWithCPPAttr' has been explicitly marked deprecated here}}
  44 using UsingInstWithCPPAttr [[deprecated("Do not use this")]] = NoAttr<int>;
  45
  46 void bar() {
  47   NoAttr<int> obj; // Okay
  48
  49   // expected-warning@+2 {{'UsingWithAttr' is deprecated}}
  50   // expected-note@+1 {{in instantiation of template type alias 'UsingWithAttr' requested here}}
  51   UsingWithAttr<int> objUsingWA;
  52
  53   // expected-warning@+2 {{'UsingWithAttr' is deprecated}}
  54   // expected-note@+1 {{in instantiation of template type alias 'UsingWithAttr' requested here}}
  55   NoAttr<UsingWithAttr<int>> s;
  56
  57   // expected-note@+1 {{'DepInt' has been explicitly marked deprecated here}}
  58   using DepInt [[deprecated]] = int;
  59   // expected-warning@+3 {{'UsingWithAttr' is deprecated}}
  60   // expected-warning@+2 {{'DepInt' is deprecated}}
  61   // expected-note@+1 {{in instantiation of template type alias 'UsingWithAttr' requested here}}
  62   using X = UsingWithAttr<DepInt>;
  63
  64   // expected-warning@+2 {{'UsingWithAttr' is deprecated}}
  65   // expected-note@+1 {{in instantiation of template type alias 'UsingWithAttr' requested here}}
  66   UsingWithAttr<int>().foo();
  67
  68   // expected-warning@+1 {{'UsingInstWithAttr' is deprecated}}
  69   UsingInstWithAttr objUIWA;
  70
  71   // expected-warning@+1 {{'TDWithAttr' is deprecated}}
  72   TDWithAttr objTDWA;
  73
  74   // expected-warning@+1 {{'UsingTDWithAttr' is deprecated}}
  75   UsingTDWithAttr objUTDWA;
  76
  77   // expected-warning@+2 {{'UsingWithCPPAttr' is deprecated}}
  78   // expected-note@+1 {{in instantiation of template type alias 'UsingWithCPPAttr' requested here}}
  79   UsingWithCPPAttr<int> objUsingWCPPA;
  80
  81   // expected-warning@+1 {{'UsingInstWithCPPAttr' is deprecated: Do not use this}}
  82   UsingInstWithCPPAttr objUICPPWA;
  83 }