register_callback.pass.cpp revision b64f8b07c104c6cc986570ac8ee0ed16a9f23976
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 21class test 22 : public std::ios 23{ 24public: 25 test() 26 { 27 init(0); 28 } 29}; 30 31int f1_called = 0; 32 33void f1(std::ios_base::event ev, std::ios_base& stream, int index) 34{ 35 if (ev == std::ios_base::imbue_event) 36 { 37 assert(stream.getloc().name() == "en_US"); 38 assert(index == 4); 39 ++f1_called; 40 } 41} 42 43int main() 44{ 45 test t; 46 std::ios_base& b = t; 47 b.register_callback(f1, 4); 48 b.register_callback(f1, 4); 49 b.register_callback(f1, 4); 50 std::locale l = b.imbue(std::locale("en_US")); 51 assert(f1_called == 3); 52} 53