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 // <utility> 10 11 // template<class T, T... I> 12 // struct integer_sequence 13 // { 14 // typedef T type; 15 // 16 // static constexpr size_t size() noexcept; 17 // }; 18 19 // This test is a conforming extension. The extension turns undefined behavior 20 // into a compile-time error. 21 22 #include <utility> 23 24 #include "test_macros.h" 25 26 int main(int, char**) 27 { 28 #if TEST_STD_VER > 11 29 30 // Should fail to compile, since float is not an integral type 31 using floatmix = std::integer_sequence<float>; 32 floatmix::value_type I; 33 34 #else 35 36 X 37 38 #endif // TEST_STD_VER > 11 39 40 return 0; 41 } 42