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// <ios> 11 12// class ios_base 13 14// ios_base& boolalpha(ios_base& str); 15 16#include <ios> 17#include <streambuf> 18#include <cassert> 19 20struct testbuf : public std::streambuf {}; 21 22int main() 23{ 24 testbuf sb; 25 std::ios ios(&sb); 26 std::ios_base& r = std::boolalpha(ios); 27 assert(&r == &ios); 28 assert(ios.flags() & std::ios::boolalpha); 29} 30