clang/test/SemaCXX/warn-deprecated-specializations-in-system-headers.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2
   3 #ifdef BE_THE_HEADER
   4 #pragma clang system_header
   5
   6 template <typename T>
   7 struct traits;
   8
   9 template <>
  10 struct [[deprecated]] traits<int> {}; // expected-note {{'traits<int>' has been explicitly marked deprecated here}}
  11
  12 template<typename T, typename Trait = traits<T>>  // expected-warning {{'traits<int>' is deprecated}}
  13 struct basic_string {};
  14
  15 // should not warn, defined and used in system headers
  16 using __do_what_i_say_not_what_i_do  = traits<int> ;
  17
  18 template<typename T, typename Trait = traits<double>>
  19 struct should_not_warn {};
  20
  21 #else
  22 #define BE_THE_HEADER
  23 #include __FILE__
  24
  25 basic_string<int> test1; // expected-note {{in instantiation of default argument for 'basic_string<int>' required here}}
  26 should_not_warn<int> test2;
  27
  28 #endif