(gdb) print m_pFr
m_pFrame   m_pFrames  
(gdb) print m_pFrame
warning: can't find class named `avm::ReadStreamV', as given by C++ RTTI
$1 = (CImage *) 0x0
(gdb) bt
#0  0x40890fea in avm::ReadStreamV::Update() (this=0x8111bd8)
    at ReadStreamV.h:47
#1  0x40890b24 in avm::ReadStreamV::ReadFrame(bool) (this=0x8111bd8, 
    render=true) at ReadStreamV.cpp:438
#2  0x4087187c in avm::AviPlayer::decoderThread() (this=0x8134cb0)
    at aviplayth.cpp:620
#3  0x4086bff3 in avm::AviPlayer::startDecoderThread(void*) (arg=0x8134cb0)
    at aviplay.cpp:1056
#4  0x40c60e31 in pthread_start_thread () from /lib/libpthread.so.0
#5  0x40f7a30a in clone () from /lib/libc.so.6
