| /*********************************************************************** |
| * |
| * 21.string.io.stdcxx-250.cpp - regression test for STDCXX-250 |
| * |
| * http://issues.apache.org/jira/browse/STDCXX-250 |
| * |
| * $Id$ |
| * |
| *********************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed |
| * with this work for additional information regarding copyright |
| * ownership. The ASF licenses this file to you under the Apache |
| * License, Version 2.0 (the "License"); you may not use this file |
| * except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| * implied. See the License for the specific language governing |
| * permissions and limitations under the License. |
| * |
| ***********************************************************************/ |
| |
| #include <cassert> |
| #include <istream> |
| #include <string> |
| |
| int main () |
| { |
| struct MyBuf : std::streambuf { |
| int_type underflow () { |
| static int i = 0; |
| // i == 0: sgect() invoked from sentry ctor |
| // i == 1: sgetc() invoked from operator>>() |
| // i == 2: sbumpc() invoked from operator>>() |
| return 1 < i++ ? throw i : 'x'; |
| } |
| } buf; |
| |
| std::istream is (&buf); |
| |
| std::string s; |
| is >> s; |
| |
| assert ("x" == s); |
| assert ((is.failbit | is.badbit) == is.rdstate ()); |
| |
| return 0; |
| } |