failed.pass.cpp (775B)
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 // <iterator> 11 12 // class ostreambuf_iterator 13 14 // bool failed() const throw(); 15 // 16 // Extension: constructing from NULL is UB; we just make it a failed iterator 17 18 #include <iterator> 19 #include <sstream> 20 #include <cassert> 21 22 int main() 23 { 24 { 25 std::ostreambuf_iterator<char> i(nullptr); 26 assert(i.failed()); 27 } 28 { 29 std::ostreambuf_iterator<wchar_t> i(nullptr); 30 assert(i.failed()); 31 } 32 }