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 // <ios> 10 11 // class ios_base 12 13 // ios_base& dec(ios_base& str); 14 15 #include <ios> 16 #include <streambuf> 17 #include <cassert> 18 19 #include "test_macros.h" 20 21 struct testbuf : public std::streambuf {}; 22 main(int,char **)23int main(int, char**) 24 { 25 testbuf sb; 26 std::ios ios(&sb); 27 std::ios_base& r = std::dec(ios); 28 assert(&r == &ios); 29 assert(ios.flags() & std::ios::dec); 30 31 return 0; 32 } 33