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// RUN: %clang_cc1 -std=c++0x -fsyntax-only -fexceptions -verify %s
template<typename... Types> struct tuple;
template<int I> struct int_c;
template<typename T>
struct identity {
typedef T type;
};
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;
};
// FIXME: Several more bullets to go
// In an initializer-list (8.5); the pattern is an initializer-clause.
// Note: this also covers expression-lists, since expression-list is
// just defined as initializer-list.
void five_args(int, int, int, int, int); // expected-note{{candidate function not viable: requires 5 arguments, but 6 were provided}}
template<int ...Values>
void initializer_list_expansion() {
int values[5] = { Values... }; // expected-error{{excess elements in array initializer}}
five_args(Values...); // expected-error{{no matching function for call to 'five_args'}}
}
template void initializer_list_expansion<1, 2, 3, 4, 5>();
template void initializer_list_expansion<1, 2, 3, 4, 5, 6>(); // expected-note{{in instantiation of function template specialization 'initializer_list_expansion<1, 2, 3, 4, 5, 6>' requested here}}
namespace PR8977 {
struct A { };
template<typename T, typename... Args> void f(Args... args) {
T t(args...);
};
template void f<A>();
}
// In a base-specifier-list (Clause 10); the pattern is a base-specifier.
template<typename ...Mixins>
struct HasMixins : public Mixins... {
HasMixins();
HasMixins(const HasMixins&);
HasMixins(int i);
};
struct A { }; // expected-note{{candidate constructor (the implicit copy constructor) not viable: no known conversion from 'int' to 'const A' for 1st argument}} \
// expected-note{{candidate constructor (the implicit default constructor) not viable: requires 0 arguments, but 1 was provided}}
struct B { };
struct C { };
struct D { };
A *checkA = new HasMixins<A, B, C, D>;
B *checkB = new HasMixins<A, B, C, D>;
D *checkD = new HasMixins<A, B, C, D>;
C *checkC = new HasMixins<A, B, D>; // expected-error{{cannot initialize a variable of type 'C *' with an rvalue of type 'HasMixins<A, B, D> *'}}
HasMixins<> *checkNone = new HasMixins<>;
template<typename Mixins>
struct BrokenMixins : public Mixins... { }; // expected-error{{pack expansion does not contain any unexpanded parameter packs}}
// In a mem-initializer-list (12.6.2); the pattern is a mem-initializer.
template<typename ...Mixins>
HasMixins<Mixins...>::HasMixins(): Mixins()... { }
template<typename ...Mixins>
HasMixins<Mixins...>::HasMixins(const HasMixins &other): Mixins(other)... { }
template<typename ...Mixins>
HasMixins<Mixins...>::HasMixins(int i): Mixins(i)... { } // expected-error{{no matching constructor for initialization of 'A'}}
void test_has_mixins() {
HasMixins<A, B> ab;
HasMixins<A, B> ab2 = ab;
HasMixins<A, B> ab3(17); // expected-note{{in instantiation of member function 'HasMixins<A, B>::HasMixins' requested here}}
}
template<typename T>
struct X {
T member;
X() : member()... { } // expected-error{{pack expansion for initialization of member 'member'}}
};
// In a template-argument-list (14.3); the pattern is a template-argument.
template<typename ...Types>
struct tuple_of_refs {
typedef tuple<Types& ...> types;
};
tuple<int&, float&> *t_int_ref_float_ref;
tuple_of_refs<int&, float&>::types *t_int_ref_float_ref_2 = t_int_ref_float_ref;
template<typename ...Types>
struct extract_nested_types {
typedef tuple<typename Types::type...> types;
};
tuple<int, float> *t_int_float;
extract_nested_types<identity<int>, identity<float> >::types *t_int_float_2
= t_int_float;
template<int ...N>
struct tuple_of_ints {
typedef tuple<int_c<N>...> type;
};
int check_temp_arg_1[is_same<tuple_of_ints<1, 2, 3, 4, 5>::type,
tuple<int_c<1>, int_c<2>, int_c<3>, int_c<4>,
int_c<5>>>::value? 1 : -1];
// In a dynamic-exception-specification (15.4); the pattern is a type-id.
template<typename ...Types>
struct f_with_except {
virtual void f() throw(Types...); // expected-note{{overridden virtual function is here}}
};
struct check_f_with_except_1 : f_with_except<int, float> {
virtual void f() throw(int, float);
};
struct check_f_with_except_2 : f_with_except<int, float> {
virtual void f() throw(int);
};
struct check_f_with_except_3 : f_with_except<int, float> {
virtual void f() throw(int, float, double); // expected-error{{exception specification of overriding function is more lax than base version}}
};
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