hanchenye-llvm-project/clang/test/PCH/ms-if-exists.cpp

31 lines
681 B
C++

// RUN: %clang_cc1 -x c++ -fms-extensions -fsyntax-only -emit-pch -o %t %s
// RUN: %clang_cc1 -x c++ -fms-extensions -fsyntax-only -include-pch %t %s -verify
#ifndef HEADER
#define HEADER
template<typename T>
void f(T t) {
__if_exists(T::foo) {
{ }
t.foo();
}
__if_not_exists(T::bar) {
int *i = t;
{ }
}
}
#else
struct HasFoo {
void foo();
};
struct HasBar {
void bar(int);
void bar(float);
};
template void f(HasFoo); // expected-note{{in instantiation of function template specialization 'f<HasFoo>' requested here}}
// expected-error@14{{no viable conversion from 'HasFoo' to 'int *'}}
template void f(HasBar);
#endif