37 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// <streambuf>10 11// template <class charT, class traits = char_traits<charT> >12// class basic_streambuf;13 14// int_type uflow();15 16#include <streambuf>17#include <cassert>18 19#include "test_macros.h"20 21int underflow_called = 0;22 23struct test24 : public std::basic_streambuf<char>25{26 test() {}27 28};29 30int main(int, char**)31{32 test t;33 assert(t.sgetc() == -1);34 35 return 0;36}37