1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // <array> 10 // UNSUPPORTED: c++03, c++11, c++14 11 // UNSUPPORTED: libcpp-no-deduction-guides 12 13 14 // template <class T, class... U> 15 // array(T, U...) -> array<T, 1 + sizeof...(U)>; 16 // 17 // Requires: (is_same_v<T, U> && ...) is true. Otherwise the program is ill-formed. 18 19 20 #include <array> 21 #include <cassert> 22 #include <cstddef> 23 24 // std::array is explicitly allowed to be initialized with A a = { init-list };. 25 // Disable the missing braces warning for this reason. 26 #include "disable_missing_braces_warning.h" 27 28 29 #include "test_macros.h" 30 31 int main(int, char**) 32 { 33 { 34 std::array arr{1,2,3L}; // expected-error {{no viable constructor or deduction guide for deduction of template arguments of 'array'}} 35 } 36 37 return 0; 38 } 39