Seg-Fault in Release version of Opal Code(ver: 3.14.2)
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#521 Seg-Fault in Release version of Opal Code(ver: 3.14.2)
Hi,
I am new to Opal. I just loaded 3.14.2 (Stable -2) version of Opal with 2.14.2(stable-2) version of PTLib on CentOS (Version 6.5 , 32bit, g++ (GCC) 4.4.7 20120313 (Red Hat 4.4.7-4)), and ran a Sample/Console application.
For some reason, the Debug version of the application (and all other sample applications) run with no-problems, but the Release version of application crashes (Infact all sample applications are crashing at same point). There is a similar bug that I can see being reported in April of this year. That bug is not yet resolved.
PS:- Few other things I checked to see if the problem goes away. The results are same in all cases.
(1) I also tried Latest CVS version of Opal(3.15-alpha0), PTLib(2.15-alpha0).
(2) I also tried compiling with "-O" rather than "-O3" to see if some optimization is causing the crash.
My team expect this to be some Initialization issue. I would like to fix it myself, but as I am new to Opal I need some guidance to do so. Also, It may be that someone knows the fix, and can help directly.
This is the gd-backtrace:
(gdb) bt
0 0x003c8dbd in PHashTableInfo::GetElementAt(PObject const&) () from /usr/local/lib/libpt.so.2.14.2
1 0x00346606 in PConfig::GetString(PString const&, PString const&, PString const&) const ()
from /usr/local/lib/libpt.so.2.14.2
2 0x00342bc0 in PConfig::GetInteger(PString const&, PString const&, long) const () from /usr/local/lib/libpt.so.2.14.2
3 0x00361d69 in PConfig::GetInteger(PString const&, long) const () from /usr/local/lib/libpt.so.2.14.2
4 0x00cd9e05 in OpalRTPSession::OpalRTPSession(OpalMediaSession::Init const&) () from /usr/local/lib/libopal.so.3.14.2
5 0x00ce6b94 in PParamFactory<OpalMediaSession, OpalMediaSession::Init="" const&,="" PCaselessString="">::Worker<OpalRTPSession>::Create(OpalMediaSession::Init const&) const () from /usr/local/lib/libopal.so.3.14.2
6 0x00cfaabc in OpalRTPConnection::CreateMediaSession(unsigned int, OpalMediaType const&, PString const&) ()
from /usr/local/lib/libopal.so.3.14.2
7 0x00cfde43 in OpalRTPConnection::UseMediaSession(unsigned int, OpalMediaType const&, PString const&) ()
from /usr/local/lib/libopal.so.3.14.2
8 0x0104faa6 in H323Connection::CreateRealTimeLogicalChannel(H323Capability const&, H323Channel::Directions, unsigned int, H245_H2250LogicalChannelParameters const*) () from /usr/local/lib/libopal.so.3.14.2
9 0x010612e0 in H323RealTimeCapability::CreateChannel(H323Connection&, H323Channel::Directions, unsigned int, H245_H2250LogicalChannelParameters const*) const () from /usr/local/lib/libopal.so.3.14.2
10 0x01043e60 in H323Connection::OpenLogicalChannel(H323Capability const&, unsigned int, H323Channel::Directions) ()
from /usr/local/lib/libopal.so.3.14.2
11 0x0104c574 in H323Connection::SelectFastStartChannels(unsigned int, bool, bool) () from /usr/local/lib/libopal.so.3.14.2
12 0x01041ecb in H323Connection::OnSelectLogicalChannels() () from /usr/local/lib/libopal.so.3.14.2
13 0x01059057 in H323Connection::SendSignalSetup(PString const&, H323TransportAddress const&) ()
from /usr/local/lib/libopal.so.3.14.2
Ticket moved from /p/opalvoip/support-requests/18/
This seemed to affect only some versions of the GNU compiler. I finally found a system that did it and investigated the problem. The crash made no sense at all, and stupid things like doing a cout made it go away!
Anyway, took opportunity to completely revamp and update the PConfig on Unix code to more modern PTLib classes, and now the problem has been fixed.