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comparison clang/test/SemaTemplate/temp_arg_pack.cpp @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
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147:c2174574ed3a 150:1d019706d866
1 // RUN: %clang_cc1 -verify %s
2
3 namespace deduce_pack_non_pack {
4 template <typename...> class A;
5 template <typename> struct C {};
6 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]}}
7 void h(C<A<bool, int>> &x) { g(x); } // expected-error {{no matching function}}
8 }
9
10 namespace pr39231 {
11 template<typename T, T ...V> struct integer_sequence {};
12
13 template <typename T, T... A, T... B>
14 int operator^(integer_sequence<T, A...> a, // expected-note {{deduced conflicting values for parameter 'A' (<1, 2, 3> vs. <4, 5, 6>)}}
15 integer_sequence<T, A...> b);
16
17 int v = integer_sequence<int, 1, 2, 3>{} ^ integer_sequence<int, 4, 5, 6>{}; // expected-error {{invalid operands}}
18
19 template <typename T, T... A, T... B>
20 integer_sequence<T, A + B...> operator+(integer_sequence<T, A...> a,
21 integer_sequence<T, B...> b);
22 integer_sequence<int, 5, 7, 9> w =
23 integer_sequence<int, 1, 2, 3>{} + integer_sequence<int, 4, 5, 6>{};
24 }