1 // -*- C++ -*-
2 //===----------------------------------------------------------------------===//
3 //
4 // The LLVM Compiler Infrastructure
5 //
6 // This file is dual licensed under the MIT and the University of Illinois Open
7 // Source Licenses. See LICENSE.TXT for details.
8 //
9 //===----------------------------------------------------------------------===//
10 #include <string>
11 #include <cassert>
12
main()13 int main()
14 {
15 #if _LIBCPP_STD_VER > 11
16 using namespace std;
17
18 string foo = ""s;
19 #endif
20 }
21