// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
template<typename T, T ...Values> struct value_tuple {};
template<typename...> struct tuple { };
template<typename T, typename U> struct pair { };
template<typename T, T Value> struct value_c;
template<typename T, typename U>
struct is_same {
static const bool value = false;
};
template<typename T>
struct is_same<T, T> {
static const bool value = true;
};
template<typename T>
struct X0 {
template<T ...Values>
void f(value_tuple<T, Values...> * = 0);
};
void test_X0() {
X0<int>().f<1, 2, 3, 4, 5>();
}
namespace PacksAtDifferentLevels {
template<typename ...Types>
struct X {
template<typename> struct Inner {
static const unsigned value = 1;
};
template<typename ...YTypes>
struct Inner<tuple<pair<Types, YTypes>...> > {
static const unsigned value = sizeof...(Types) - sizeof...(YTypes);
};
};
int check0[X<short, int, long>::Inner<tuple<pair<short, unsigned short>,
pair<int, unsigned int>,
pair<long, unsigned long>>
>::value == 0? 1 : -1];
int check1[X<short, int>::Inner<tuple<pair<short, unsigned short>,
pair<int, unsigned int>,
pair<long, unsigned long>>
>::value == 1? 1 : -1];
template<unsigned ...Values> struct unsigned_tuple { };
template<typename ...Types>
struct X1 {
template<typename, typename> struct Inner {
static const unsigned value = 0;
};
template<typename ...YTypes>
struct Inner<tuple<pair<Types, YTypes>...>,
unsigned_tuple<sizeof(Types) + sizeof(YTypes)...>> {
static const unsigned value = 1;
};
};
int check2[X1<short, int, long>::Inner<tuple<pair<short, unsigned short>,
pair<int, unsigned int>,
pair<long, unsigned long>>,
unsigned_tuple<sizeof(short) + sizeof(unsigned short),
sizeof(int) + sizeof(unsigned int),
sizeof(long) + sizeof(unsigned long)>
>::value == 1? 1 : -1];
int check3[X1<short, int>::Inner<tuple<pair<short, unsigned short>,
pair<int, unsigned int>,
pair<long, unsigned long>>,
unsigned_tuple<sizeof(short) + sizeof(unsigned short),
sizeof(int) + sizeof(unsigned int),
sizeof(long) + sizeof(unsigned long)>
>::value == 0? 1 : -1];
template<typename ...Types>
struct X2 {
template<typename> struct Inner {
static const unsigned value = 1;
};
template<typename R, typename ...YTypes>
struct Inner<R(pair<Types, YTypes>...)> {
static const unsigned value = sizeof...(Types) - sizeof...(YTypes);
};
};
int check4[X2<short, int, long>::Inner<int(pair<short, unsigned short>,
pair<int, unsigned int>,
pair<long, unsigned long>)
>::value == 0? 1 : -1];
int check5[X2<short, int>::Inner<int(pair<short, unsigned short>,
pair<int, unsigned int>,
pair<long, unsigned long>)
>::value == 1? 1 : -1];
template<typename T, typename U>
struct some_function_object {
template<typename>
struct result_of;
};
template<template<class> class...> struct metafun_tuple { };
template<typename ...Types1>
struct X3 {
template<typename, typename> struct Inner {
static const unsigned value = 0;
};
template<typename ...Types2>
struct Inner<tuple<pair<Types1, Types2>...>,
metafun_tuple<some_function_object<Types1, Types2>::template result_of...> > {
static const unsigned value = 1;
};
};
int check6[X3<short, int, long>::Inner<tuple<pair<short, unsigned short>,
pair<int, unsigned int>,
pair<long, unsigned long>>,
metafun_tuple<
some_function_object<short, unsigned short>::result_of,
some_function_object<int, unsigned int>::result_of,
some_function_object<long, unsigned long>::result_of>
>::value == 1? 1 : -1];
int check7[X3<short, int>::Inner<tuple<pair<short, unsigned short>,
pair<int, unsigned int>,
pair<long, unsigned long>>,
metafun_tuple<
some_function_object<short, unsigned short>::result_of,
some_function_object<int, unsigned int>::result_of,
some_function_object<long, unsigned long>::result_of>
>::value == 0? 1 : -1];
template<unsigned I, unsigned J> struct unsigned_pair { };
template<unsigned ...Values1>
struct X4 {
template<typename> struct Inner {
static const unsigned value = 0;
};
template<unsigned ...Values2>
struct Inner<tuple<unsigned_pair<Values1, Values2>...>> {
static const unsigned value = 1;
};
};
int check8[X4<1, 3, 5>::Inner<tuple<unsigned_pair<1, 2>,
unsigned_pair<3, 4>,
unsigned_pair<5, 6>>
>::value == 1? 1 : -1];
int check9[X4<1, 3>::Inner<tuple<unsigned_pair<1, 2>,
unsigned_pair<3, 4>,
unsigned_pair<5, 6>>
>::value == 0? 1 : -1];
template<class> struct add_reference;
template<class> struct add_pointer;
template<class> struct add_const;
template<template<class> class ...Templates>
struct X5 {
template<typename> struct Inner {
static const unsigned value = 0;
};
template<typename ...Types>
struct Inner<tuple<Templates<Types>...>> {
static const unsigned value = 1;
};
};
int check10[X5<add_reference, add_pointer, add_const>
::Inner<tuple<add_reference<int>,
add_pointer<float>,
add_const<double>>>::value == 1? 1 : -1];
int check11[X5<add_reference, add_pointer>
::Inner<tuple<add_reference<int>,
add_pointer<float>,
add_const<double>>>::value == 0? 1 : -1];
namespace PR13811 {
constexpr int g(int n, int m) { return n * 10 + m; }
template<typename...A>
struct X6 {
template<typename...B>
constexpr auto f1(A ...a) const -> decltype(g(A(a + B())...)) { return g(A(a + B())...); }
template<typename...B>
constexpr auto f2(A ...a, B ...b) const -> decltype(g((&a)[b] ...)) { return g((&a)[b] ...); } // expected-note {{past-the-end}}
template<typename...B> struct Inner {
template<typename...C>
constexpr auto f(A ...a, B ...b, C ...c) const -> decltype(g(a+b+c...)) { return g(a+b+c...); }
};
};
struct A { constexpr operator int() const { return 2; } };
struct B { constexpr operator int() const { return 1; } };
static_assert(X6<unsigned char, int>().f1<A, B>(255, 1) == 12, "");
static_assert(X6<int, int>().f2(3, 4, 0, 0) == 34, "");
static_assert(X6<int, int>().f2(3, 4, 0, 1) == 34, ""); // expected-error {{constant expression}} expected-note {{in call}}
static_assert(X6<int, int>::Inner<int, int>().f(1, 2, 3, 4, 5, 6) == 102, "");
}
}
namespace ExpandingNonTypeTemplateParameters {
template<typename ...Types>
struct tuple_of_values {
template<Types ...Values> // expected-error{{a non-type template parameter cannot have type 'float'}} \
// expected-note{{template parameter is declared here}}
struct apply { // expected-note 2{{template is declared here}}
typedef tuple<value_c<Types, Values>...> type;
};
};
int i;
float f;
int check_tuple_of_values_1[
is_same<tuple_of_values<int&, float&, char, int>::apply<i, f, 'a', 17>
::type,
tuple<value_c<int&, i>, value_c<float&, f>, value_c<char, 'a'>,
value_c<int, 17>>
>::value? 1 : -1];
tuple_of_values<int, float> tv1; // expected-note{{in instantiation of template class 'ExpandingNonTypeTemplateParameters::tuple_of_values<int, float>' requested here}}
tuple_of_values<int&, float&>::apply<i, i>::type tv2; // expected-error{{non-type template parameter of reference type 'float &' cannot bind to template argument of type 'int'}}
tuple_of_values<int&, float&>::apply<i>::type tv3; // expected-error{{too few template arguments for class template 'apply'}}
tuple_of_values<int&, float&>::apply<i, f, i>::type tv4; // expected-error{{too many template arguments for class template 'apply'}}
}
namespace ExpandingFunctionParameters {
template<typename ...T>
struct X0 {
typedef int type;
};
template<typename ...T>
struct X1 {
template<typename ... U>
typename X0<T(T, U...)...>::type f(U...);
};
void test() {
X1<float> x1;
x1.f(17, 3.14159);
}
}
namespace PR10230 {
template<typename>
struct s
{
template<typename... Args>
auto f() -> int(&)[sizeof...(Args)];
};
void main()
{
int (&ir1)[1] = s<int>().f<int>();
int (&ir3)[3] = s<int>().f<int, float, double>();
}
}
namespace PR13386 {
template<typename...> struct tuple {};
template<typename...T>
struct S {
template<typename...U>
void f(T &&...t, U &&...u) {} // expected-note {{candidate}}
template<typename...U>
void g(U &&...u, T &&...t) {} // expected-note {{candidate}}
template<typename...U>
void h(tuple<T, U> &&...) {}
// expected-note@-1 {{candidate template ignored: could not match 'tuple<T, U>' against 'int'}}
// expected-note@-2 {{candidate template ignored: substitution failure: deduced incomplete pack <(no value)> for template parameter 'U'}}
template<typename...U>
struct X {
template<typename...V>
void x(tuple<T, U, V> &&...); // expected-error {{different lengths}}
};
};
void test() {
S<>().f();
S<>().f(0);
S<int>().f(0);
S<int>().f(0, 1);
S<int, int>().f(0); // expected-error {{no matching member function for call}}
S<>().g();
S<>().g(0);
S<int>().g(0);
S<int>().g(0, 1); // expected-error {{no matching member function for call}}
S<int>().g<int>(0, 1);
S<int, int>().g(0, 1);
S<>().h();
S<>().h(0); // expected-error {{no matching member function for call}}
S<int>().h({}); // expected-error {{no matching member function for call}}
S<int>().h<int>({});
S<int>().h(tuple<int,int>{});
S<int, int>().h(tuple<int,int>{}, tuple<int,int>{});
S<int, int>::X<char>(); // expected-note {{here}}
}
}
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