derive_from.pass.cpp (769B)
1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // UNSUPPORTED: c++98, c++03 11 12 // <functional> 13 14 // See https://bugs.llvm.org/show_bug.cgi?id=20002 15 16 #include <functional> 17 #include <type_traits> 18 19 #include "test_macros.h" 20 21 using Fn = std::function<void()>; 22 struct S : public std::function<void()> { using function::function; }; 23 24 int main() { 25 S s( [](){} ); 26 S f1( s ); 27 #if TEST_STD_VER <= 14 28 S f2(std::allocator_arg, std::allocator<int>{}, s); 29 #endif 30 }