[kde-freebsd] ports/139798: audio/arts: artsd crashes with SIGSEGV on 9-CURRENT

[Matthias Apitz]

The following reply was made to PR ports/139798; it has been noted by GNATS.

From: Matthias Apitz <guru at unixarea.de>
To: bug-followup at FreeBSD.org
Cc:  
Subject: Re: ports/139798: audio/arts: artsd crashes with SIGSEGV on 9-CURRENT
Date: Fri, 23 Oct 2009 10:25:13 +0200

 I compiled audio/arts with CFLAGS for debugging to get a better backtrace;
 the crash is when artsd will play the KDE greeting song; the file itself plays
 fine, for example with mplayer; I'm not a C++ programmer and don't know what
 could cause this SIGSEGV; the problem is fully reproduceable and I'm
 willing to provide any further information with 'gdb' if someone has an
 idea where to look; the part of kmedia2.cc is attached below as well,
 line 208 is marked; 
 
 #0  Arts::PlayObject_base::_create (subClass=@0xbfbfc464) at kmedia2.cc:208
 208             Arts::PlayObject_base *castedObject = (Arts::PlayObject_base *)skel->_cast(Arts::PlayObject_base::_IID);
 [New Thread 28c01140 (LWP 100094)]
 (gdb) bt
 #0  Arts::PlayObject_base::_create (subClass=@0xbfbfc464) at kmedia2.cc:208
 #1  0x08063bd1 in Arts::SimpleSoundServer_impl::createPlayObject (this=0x28c33f00, filename=@0xbfbfc4f4) at kmedia2.h:241
 #2  0x08061288 in Arts::SimpleSoundServer_impl::play (this=0x28c33f00, filename=@0xbfbfc4f4) at simplesoundserver_impl.cc:260
 #3  0x280f71d3 in _dispatch_Arts_SimpleSoundServer_00 (object=0x28c33f84, request=0x28c505e0, result=0x28c66620) at soundserver.cc:1324
 #4  0x2857aeb6 in Arts::Object_skel::_dispatch (this=0x28c33f8c, request=0x28c505e0, result=0x28c66620, methodID=37) at object.cc:855
 #5  0x28570ba8 in Arts::Dispatcher::handle (this=0xbfbfe964, conn=0x28c65500, buffer=0x28c505e0, messageType=4) at dispatcher.cc:562
 #6  0x2853f431 in Arts::Connection::receive (this=0x28c65500, newdata=0xbfbfc6ec "MCOP", newlen=70) at connection.cc:168
 #7  0x2857e5be in Arts::SocketConnection::notifyIO (this=0x28c65500, _fd=11, types=1) at socketconnection.cc:139
 #8  0x285738df in Arts::StdIOManager::processOneEvent (this=0x28c13400, blocking=true) at iomanager.cc:308
 #9  0x28572f30 in Arts::StdIOManager::run (this=0x28c13400) at iomanager.cc:357
 #10 0x28569507 in Arts::Dispatcher::run (this=0xbfbfe964) at dispatcher.cc:957
 #11 0x0806a307 in main (argc=Cannot access memory at address 0x0
 ) at artsd.cc:362
 
 
 (gdb) p subClass
 $1 = (const string &) @0xbfbfc464: {static npos = 4294967295, 
   _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
     _M_p = 0x28c9ccac "akodeXiphPlayObject"}}
 (gdb) up
 #1  0x08063bd1 in Arts::SimpleSoundServer_impl::createPlayObject (this=0x28c33f00, filename=@0xbfbfc4f4) at kmedia2.h:241
 241                     Arts::Object(PlayObject_base::_create(s.string())), _cache(0) {}
 (gdb) p filename
 $2 = (const string &) @0xbfbfc4f4: {static npos = 4294967295, 
   _M_dataplus = {<std::allocator<char>> = {<__gnu_cxx::new_allocator<char>> = {<No data fields>}, <No data fields>}, 
     _M_p = 0x28c65d8c "/usr/local/share/sounds/KDE_Startup_1.ogg"}}
 (gdb) 
 
 
 kmedia2.cc:
 
 ...
 Arts::PlayObject_base *Arts::PlayObject_base::_create(const std::string& subClass)
 {
         Arts::Object_skel *skel = Arts::ObjectManager::the()->create(subClass);
         assert(skel);
 208-->  Arts::PlayObject_base *castedObject = (Arts::PlayObject_base *)skel->_cast(Arts::PlayObject_base::_IID);
         assert(castedObject);
         return castedObject;
 }
 ...
 
 -- 
 Matthias Apitz
 t +49-89-61308 351 - f +49-89-61308 399 - m +49-170-4527211
 e <guru at unixarea.de> - w http://www.unixarea.de/
 Vote NO to EU The Lisbon Treaty: http://www.no-means-no.eu