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Diffstat (limited to 'test/CXX/temp/temp.decls/temp.variadic/p4.cpp')
-rw-r--r-- | test/CXX/temp/temp.decls/temp.variadic/p4.cpp | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/test/CXX/temp/temp.decls/temp.variadic/p4.cpp b/test/CXX/temp/temp.decls/temp.variadic/p4.cpp new file mode 100644 index 0000000..e2fa122 --- /dev/null +++ b/test/CXX/temp/temp.decls/temp.variadic/p4.cpp @@ -0,0 +1,135 @@ +// 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}} +}; |