clang/test/PCH/ms-if-exists.cpp

   1 // RUN: %clang_cc1 -x c++ -fms-extensions -fsyntax-only -emit-pch -o %t %s
   2 // RUN: %clang_cc1 -x c++ -fms-extensions -fsyntax-only -include-pch %t %s -verify
   3
   4 // RUN: %clang_cc1 -x c++ -fms-extensions -fsyntax-only -emit-pch -fpch-instantiate-templates -o %t %s
   5 // RUN: %clang_cc1 -x c++ -fms-extensions -fsyntax-only -include-pch %t %s -verify
   6
   7 #ifndef HEADER
   8 #define HEADER
   9 template<typename T>
  10 void f(T t) {
  11   __if_exists(T::foo) {
  12     { }
  13     t.foo();
  14   }
  15
  16   __if_not_exists(T::bar) {
  17     int *i = t;
  18     { }
  19   }
  20 }
  21 #else
  22 struct HasFoo {
  23   void foo();
  24 };
  25 struct HasBar {
  26   void bar(int);
  27   void bar(float);
  28 };
  29
  30 template void f(HasFoo); // expected-note{{in instantiation of function template specialization 'f<HasFoo>' requested here}}
  31                          // expected-error@17{{no viable conversion from 'HasFoo' to 'int *'}}
  32 template void f(HasBar);
  33 #endif