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// RUN: %clang_cc1 -fsyntax-only -verify %s -Wno-c++20-extensions
// RUN: %clang_cc1 -fsyntax-only -verify -Wno-c++11-extensions -std=c++98 %s
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %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; }
M::template Promote<int> pi;
}
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 unqualified-id}}
N::M::template Promote; // expected-error{{expected unqualified-id}}
namespace N {
template<typename T> struct A;
template<>
struct A<int> {
struct X;
};
struct B; // expected-note{{declared as a non-template here}}
}
struct ::N::A<int>::X {
int foo;
};
template<typename T>
struct TestA {
typedef typename N::template B<T>::type type; // expected-error{{'B' following the 'template' keyword does not refer to a template}}
};
// Reduced from a Boost failure.
namespace test1 {
template <class T> struct pair {
T x;
T y;
static T pair<T>::* const mem_array[2];
};
template <class T>
T pair<T>::* const pair<T>::mem_array[2] = { &pair<T>::x, &pair<T>::y };
}
typedef int T;
namespace N1 {
template<typename T> T f0();
}
template<typename T> T N1::f0() { }
namespace PR7385 {
template< typename > struct has_xxx0
{
template< typename > struct has_xxx0_introspect
{
template< typename > struct has_xxx0_substitute ;
template< typename V >
int int00( has_xxx0_substitute < typename V::template xxx< > > = 0 );
};
static const int value = has_xxx0_introspect<int>::value; // expected-error{{no member named 'value'}}
typedef int type;
};
has_xxx0<int>::type t; // expected-note{{instantiation of}}
}
namespace PR7725 {
template<class ignored> struct TypedefProvider;
template<typename T>
struct TemplateClass : public TypedefProvider<T>
{
void PrintSelf() {
TemplateClass::Test::PrintSelf();
}
};
}
namespace PR9226 {
template<typename a>
void nt() // expected-note{{function template 'nt' declared here}}
{ nt<>:: } // expected-error{{qualified name refers into a specialization of function template 'nt'}} \
// expected-error{{expected unqualified-id}}
template<typename T>
void f(T*); // expected-note{{function template 'f' declared here}}
template<typename T>
void f(T*, T*); // expected-note{{function template 'f' declared here}}
void g() {
f<int>:: // expected-error{{qualified name refers into a specialization of function template 'f'}}
} // expected-error{{expected unqualified-id}}
struct X {
template<typename T> void f(); // expected-note{{function template 'f' declared here}}
};
template<typename T, typename U>
struct Y {
typedef typename T::template f<U> type; // expected-error{{template name refers to non-type template 'PR9226::X::template f'}}
};
Y<X, int> yxi; // expected-note{{in instantiation of template class 'PR9226::Y<PR9226::X, int>' requested here}}
}
namespace PR9449 {
template <typename T>
struct s; // expected-note{{template is declared here}}
template <typename T>
void f() {
int s<T>::template n<T>::* f; // expected-error{{implicit instantiation of undefined template 'PR9449::s<int>'}}
}
template void f<int>(); // expected-note{{in instantiation of}}
}
namespace sugared_template_instantiation {
// Test that we ignore local qualifiers.
template <class A1, class = typename A1::type1> struct A {};
struct B { typedef int type1; };
typedef A<const B> type2;
} // namespace sugated_template_instantiation
namespace unresolved_using {
template <class> struct A {
struct B {
typedef int X;
};
};
template <class T> struct C : A<T> {
using typename A<T>::B;
typedef typename B::X Y;
};
template struct C<int>;
} // namespace unresolved_using
#if __cplusplus >= 201703L
namespace SubstTemplateTypeParmPackType {
template <int...> struct A {};
template <class... Ts> void f() {
[]<int ... Is>(A<Is...>) { (Ts::g(Is) && ...); }(A<0>{});
};
struct B { static void g(int); };
template void f<B>();
} // namespace SubstTemplateTypeParmPackType
#endif
namespace DependentUnaryTransform {
template <class T> using decay_t = __decay(T);
template <class, class> struct A;
template <class T> struct A<T, typename decay_t<T>::X>;
} // namespace DependentUnaryTransform
namespace DependentSizedArray {
template <int V> using Z = int[V];
template <class, class> struct A;
template <class T> struct A<T, typename Z<T(0)>::X>;
} // namespace DependentUnaryTransform
namespace GH155281 {
template <bool> struct enable_if;
template <class _Tp, _Tp> struct integral_constant;
template <typename> struct conjunction;
template <typename T> using value_type_t = T;
template <class Check> using require_t = typename enable_if<Check::value>::type;
template <template <class> class, template <class> class,
template <class> class, class... Check>
using container_type_check_base =
integral_constant<bool, conjunction<Check...>::value>;
template <typename> struct is_std_vector;
template <template <class> class TypeCheck, class... Check>
using require_std_vector_vt =
require_t<container_type_check_base<is_std_vector, value_type_t, TypeCheck,
Check...> >;
template <typename, typename> class vector_seq_view;
namespace internal {
template <typename> using is_matrix_or_std_vector = int;
}
template <typename T>
class vector_seq_view<
T, require_std_vector_vt<internal::is_matrix_or_std_vector, T> >;
} // namespace GH155281
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