bool.pass.cpp (1043B)
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 // template <class charT, class traits> class basic_ios 13 14 // operator unspecified-bool-type() const; 15 16 #include <ios> 17 #include <type_traits> 18 #include <cassert> 19 20 #include "test_macros.h" 21 22 int main() 23 { 24 std::ios ios(0); 25 assert(static_cast<bool>(ios) == !ios.fail()); 26 ios.setstate(std::ios::failbit); 27 assert(static_cast<bool>(ios) == !ios.fail()); 28 static_assert((!std::is_convertible<std::ios, void*>::value), ""); 29 static_assert((!std::is_convertible<std::ios, int>::value), ""); 30 static_assert((!std::is_convertible<std::ios const&, int>::value), ""); 31 #if TEST_STD_VER >= 11 32 static_assert((!std::is_convertible<std::ios, bool>::value), ""); 33 #endif 34 }