llvm-project/clang/test/SemaTemplate/temp_arg_pack.cpp

25 lines
1.1 KiB
C++

// RUN: %clang_cc1 -verify %s
namespace deduce_pack_non_pack {
template <typename...> class A;
template <typename> struct C {};
template <typename T> void g(C<A<T>>); // expected-note {{candidate template ignored: deduced type 'C<A<[...], (no argument)>>' of 1st parameter does not match adjusted type 'C<A<[...], int>>' of argument [with T = bool]}}
void h(C<A<bool, int>> &x) { g(x); } // expected-error {{no matching function}}
}
namespace pr39231 {
template<typename T, T ...V> struct integer_sequence {};
template <typename T, T... A, T... B>
int operator^(integer_sequence<T, A...> a, // expected-note {{deduced conflicting values for parameter 'A' (<1, 2, 3> vs. <4, 5, 6>)}}
integer_sequence<T, A...> b);
int v = integer_sequence<int, 1, 2, 3>{} ^ integer_sequence<int, 4, 5, 6>{}; // expected-error {{invalid operands}}
template <typename T, T... A, T... B>
integer_sequence<T, A + B...> operator+(integer_sequence<T, A...> a,
integer_sequence<T, B...> b);
integer_sequence<int, 5, 7, 9> w =
integer_sequence<int, 1, 2, 3>{} + integer_sequence<int, 4, 5, 6>{};
}