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List:       kopete-devel
Subject:    [kopete-devel] [Bug 136390] New: Yahoo duplicate login causes NULL
From:       Matt Seitz <seitz () neopathnetworks ! com>
Date:       2006-10-27 16:23:27
Message-ID: 20061027182326.136390.seitz () neopathnetworks ! com
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http://bugs.kde.org/show_bug.cgi?id=136390         
           Summary: Yahoo duplicate login causes NULL pointer dereference
           Product: kopete
           Version: unspecified
          Platform: RedHat RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: crash
          Priority: NOR
         Component: general
        AssignedTo: kopete-devel kde org
        ReportedBy: seitz neopathnetworks com


Version:           0.12.2 (using KDE KDE 3.5.5)
Installed from:    RedHat RPMs
Compiler:          gcc (GCC) 3.4.6 20060404 (Red Hat 3.4.6-3) 
OS:                Linux

I found a NULL pointer dereference in \
"protocols/yahoo/libkyahoo/yahooclientstream.cpp":

I have built Kopete 0.12.2 using kdelibs-3.3.1-6.RHEL4 on my CentOS 4 Linux (a clone \
of RHEL 4) system.  It is working well, except I get a segfault when I am connected \
to Yahoo!, and I then connect to Yahoo! from another system.

With some help from the list, I compiled a debug version and ran it under GDB.  \
That's how I found the problem:


void ClientStream::cp_outgoingData( const QByteArray& outgoingBytes )
{
    // take formatted bytes from CoreProtocol and put them on the wire
    kdDebug(YAHOO_RAW_DEBUG) << k_funcinfo << "[data size: " << outgoingBytes.size() \
<< "]" << endl;  //cs_dump( outgoingBytes );
    d->bs->write( outgoingBytes );
}

The segfault happens on the "d->bs->write( outgoingBytes );" statement.  At this \
point, "d->bs" is NULL.

Looking at the call stack, it appears this originated with a call to \
"Client::sendPing()". _______________________________________________
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