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 // void register_callback(event_callback fn, int index); 15 16 #include <ios> 17 #include <string> 18 #include <locale> 19 #include <cassert> 20 21 #include "platform_support.h" // locale name macros 22 23 class test 24 : public std::ios 25 { 26 public: 27 test() 28 { 29 init(0); 30 } 31 }; 32 33 int f1_called = 0; 34 35 void f1(std::ios_base::event ev, std::ios_base& stream, int index) 36 { 37 if (ev == std::ios_base::imbue_event) 38 { 39 assert(stream.getloc().name() == LOCALE_en_US_UTF_8); 40 assert(index == 4); 41 ++f1_called; 42 } 43 } 44 45 int main() 46 { 47 test t; 48 std::ios_base& b = t; 49 b.register_callback(f1, 4); 50 b.register_callback(f1, 4); 51 b.register_callback(f1, 4); 52 std::locale l = b.imbue(std::locale(LOCALE_en_US_UTF_8)); 53 assert(f1_called == 3); 54 } 55
