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      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 // <system_error>
     11 
     12 // class error_code
     13 
     14 // explicit operator bool() const;
     15 
     16 #include <system_error>
     17 #include <string>
     18 #include <cassert>
     19 
     20 int main()
     21 {
     22     {
     23         const std::error_code ec(6, std::generic_category());
     24         assert(static_cast<bool>(ec));
     25     }
     26     {
     27         const std::error_code ec(0, std::generic_category());
     28         assert(!static_cast<bool>(ec));
     29     }
     30 }
     31