// { dg-do compile { target c++17 } }
#ifndef __cpp_fold_expressions
#error __cpp_fold_expressions not defined
#endif
#if __cpp_fold_expressions != 201603
#error Wrong value for __cpp_fold_expressions
#endif
// { dg-do compile { target c++17 } }
#ifndef __cpp_fold_expressions
#error __cpp_fold_expressions not defined
#endif
#if __cpp_fold_expressions != 201603
#error Wrong value for __cpp_fold_expressions
#endif