Return-Path: 
 <stdcxx-dev-return-5335-apmail-incubator-stdcxx-dev-archive=incubator.apache.org@incubator.apache.org>
Delivered-To: apmail-incubator-stdcxx-dev-archive@www.apache.org
Received: (qmail 41147 invoked from network); 4 Oct 2007 12:06:12 -0000
Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2)
  by minotaur.apache.org with SMTP; 4 Oct 2007 12:06:12 -0000
Received: (qmail 53150 invoked by uid 500); 4 Oct 2007 12:06:01 -0000
Delivered-To: apmail-incubator-stdcxx-dev-archive@incubator.apache.org
Received: (qmail 53132 invoked by uid 500); 4 Oct 2007 12:06:01 -0000
Mailing-List: contact stdcxx-dev-help@incubator.apache.org; run by ezmlm
Precedence: bulk
List-Help: <mailto:stdcxx-dev-help@incubator.apache.org>
List-Unsubscribe: <mailto:stdcxx-dev-unsubscribe@incubator.apache.org>
List-Post: <mailto:stdcxx-dev@incubator.apache.org>
List-Id: <stdcxx-dev.incubator.apache.org>
Reply-To: stdcxx-dev@incubator.apache.org
Delivered-To: mailing list stdcxx-dev@incubator.apache.org
Received: (qmail 53113 invoked by uid 99); 4 Oct 2007 12:06:01 -0000
Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136)
    by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 04 Oct 2007 05:06:01 -0700
X-ASF-Spam-Status: No, hits=-100.0 required=10.0
	tests=ALL_TRUSTED
X-Spam-Check-By: apache.org
Received: from [140.211.11.4] (HELO brutus.apache.org) (140.211.11.4)
    by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 04 Oct 2007 12:06:11 +0000
Received: from brutus (localhost [127.0.0.1])
	by brutus.apache.org (Postfix) with ESMTP id 6DDEE714187
	for <stdcxx-dev@incubator.apache.org>; Thu,  4 Oct 2007 05:05:51 -0700 (PDT)
Message-ID: <7566691.1191499551432.JavaMail.jira@brutus>
Date: Thu, 4 Oct 2007 05:05:51 -0700 (PDT)
From: "Farid Zaripov (JIRA)" <jira@apache.org>
To: stdcxx-dev@incubator.apache.org
Subject: [jira] Created: (STDCXX-576) std::basic_streambuf<>::xsputn()
 incorrectly inserts the data, that is the part of the internal buffer
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
X-Virus-Checked: Checked by ClamAV on apache.org

std::basic_streambuf<>::xsputn() incorrectly inserts the data, that is the part of the internal buffer
------------------------------------------------------------------------------------------------------

                 Key: STDCXX-576
                 URL: https://issues.apache.org/jira/browse/STDCXX-576
             Project: C++ Standard Library
          Issue Type: Bug
          Components: 27. Input/Output
    Affects Versions: trunk
         Environment: All
            Reporter: Farid Zaripov
            Assignee: Farid Zaripov
             Fix For: 4.2


The test below aborts on assert. 

test.cpp:
------------------ 
#include <sstream>  // for stringbuf
#include <string>   // for string
#include <cassert>  // for assert()

struct PubBuf: std::stringbuf
{
    char* Pbase () const { return this->pbase (); }
};

int main ()
{
    // 512 is the default buffer size of the basic_stringbuf
    std::string s (512, 'a');

    std::stringbuf sbuf (s);
    PubBuf& buf = (PubBuf&)sbuf;

    std::streamsize res = buf.sputn (buf.Pbase (), 128);
    s.append (s.begin (), s.begin () + 128);

    const std::string& str = buf.str ();

    assert (res == 128);
    assert (str.size () == s.size ());
    assert (str == s);

    return 0;
} 
------------------ 

The test output:
------------------
test: test.cpp:25: int main (): Assertion `str == s' failed.
Aborted
------------------


-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.