| /************************************************************************ |
| * |
| * 27.ostream.unformatted.stdcxx-626.cpp - regression test for STDCXX-626 |
| * |
| * http://issues.apache.org/jira/browse/STDCXX-626 |
| * |
| * $Id$ |
| * |
| ************************************************************************ |
| * |
| * 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 <ostream> |
| |
| int sync_calls; |
| |
| struct MyBuf: std::streambuf |
| { |
| virtual int sync () { |
| ++sync_calls; |
| return -1; |
| } |
| }; |
| |
| |
| int main () |
| { |
| MyBuf buf; |
| |
| std::ostream os (&buf); |
| |
| // verify that ostream::flush() doesn't call streambuf::sync() |
| // when the state of the stream isn't good |
| |
| os.setstate (os.badbit); |
| |
| os.flush (); |
| |
| assert (0 == sync_calls); |
| |
| os.setstate (os.eofbit); |
| |
| os.flush (); |
| |
| assert (0 == sync_calls); |
| |
| os.setstate (os.failbit); |
| |
| os.flush (); |
| |
| assert (0 == sync_calls); |
| |
| return 0; |
| } |