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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// REQUIRES: locale.en_US.UTF-8
// <ios>
// class ios_base
// void register_callback(event_callback fn, int index);
#include <ios>
#include <string>
#include <locale>
#include <cassert>
#include "test_macros.h"
#include "platform_support.h" // locale name macros
class test
: public std::ios
{
public:
test()
{
init(0);
}
};
int f1_called = 0;
void f1(std::ios_base::event ev, std::ios_base& stream, int index)
{
if (ev == std::ios_base::imbue_event)
{
assert(stream.getloc().name() == LOCALE_en_US_UTF_8);
assert(index == 4);
++f1_called;
}
}
int main(int, char**)
{
test t;
std::ios_base& b = t;
b.register_callback(f1, 4);
b.register_callback(f1, 4);
b.register_callback(f1, 4);
std::locale l = b.imbue(std::locale(LOCALE_en_US_UTF_8));
assert(f1_called == 3);
return 0;
}
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