llvm-project/clang/test/SemaTemplate/nested-name-spec-template.cpp

62 lines
1.6 KiB
C++

// RUN: clang-cc -fsyntax-only -verify %s
namespace N {
namespace M {
template<typename T> struct Promote;
template<> struct Promote<short> {
typedef int type;
};
template<> struct Promote<int> {
typedef int type;
};
template<> struct Promote<float> {
typedef double type;
};
Promote<short>::type *ret_intptr(int* ip) { return ip; }
Promote<int>::type *ret_intptr2(int* ip) { return ip; }
}
M::Promote<int>::type *ret_intptr3(int* ip) { return ip; }
M::template Promote<int>::type *ret_intptr4(int* ip) { return ip; }
}
N::M::Promote<int>::type *ret_intptr5(int* ip) { return ip; }
::N::M::Promote<int>::type *ret_intptr6(int* ip) { return ip; }
N::M::template; // expected-error{{expected template name after 'template' keyword in nested name specifier}} \
// expected-error{{expected unqualified-id}}
N::M::template Promote; // expected-error{{expected '<' after 'template Promote' in nested name specifier}} \
// expected-error{{C++ requires a type specifier for all declarations}}
namespace N {
template<typename T> struct A;
template<>
struct A<int> {
struct X;
};
struct B;
}
struct ::N::A<int>::X {
int foo;
};
#if 0
// FIXME: the following crashes the parser, because Sema has no way to
// communicate that the "dependent" template-name N::template B doesn't
// actually refer to a template.
template<typename T>
struct TestA {
typedef typename N::template B<T>::type type; // xpected-error{{'B' following the 'template' keyword does not refer to a template}}
// FIXME: should show what B *does* refer to.
};
#endif