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 // <system_error> 10 11 // class error_category 12 13 // virtual string message(int ev) const = 0; 14 15 #include <system_error> 16 #include <cassert> 17 #include <string> 18 19 #include <stdio.h> 20 21 #include "test_macros.h" 22 23 int main(int, char**) { 24 const std::error_category& e_cat1 = std::generic_category(); 25 const std::error_category& e_cat2 = std::system_category(); 26 std::string m1 = e_cat1.message(5); 27 std::string m2 = e_cat2.message(5); 28 std::string m3 = e_cat2.message(6); 29 assert(!m1.empty()); 30 assert(!m2.empty()); 31 assert(!m3.empty()); 32 #ifndef _WIN32 33 // On windows, system_category is distinct. 34 LIBCPP_ASSERT(m1 == m2); 35 #endif 36 assert(m2 != m3); 37 38 return 0; 39 } 40