39 lines
873 B
C++
39 lines
873 B
C++
|
//===----------------------------------------------------------------------===//
|
||
|
|
//
|
||
|
|
// The LLVM Compiler Infrastructure
|
||
|
|
//
|
||
|
|
// This file is dual licensed under the MIT and the University of Illinois Open
|
||
|
|
// Source Licenses. See LICENSE.TXT for details.
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
|
||
|
|
// <utility>
|
||
|
|
|
||
|
|
// template<class T, T... I>
|
||
|
|
// struct integer_sequence
|
||
|
|
// {
|
||
|
|
// typedef T type;
|
||
|
|
//
|
||
|
|
// static constexpr size_t size() noexcept;
|
||
|
|
// };
|
||
|
|
|
||
|
|
// This test is a conforming extension. The extension turns undefined behavior
|
||
|
|
// into a compile-time error.
|
||
|
|
|
||
|
|
#include <utility>
|
||
|
|
|
||
|
|
int main()
|
||
|
|
{
|
||
|
|
#if _LIBCPP_STD_VER > 11
|
||
|
|
|
||
|
|
// Should fail to compile, since float is not an integral type
|
||
|
|
using floatmix = std::integer_sequence<float>;
|
||
|
|
floatmix::value_type I;
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
X
|
||
|
|
|
||
|
|
#endif // _LIBCPP_STD_VER > 11
|
||
|
|
}
|