Does the segfault go away if you stub out log_msg()? -Paul
> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Steve Webb > Sent: Wednesday, January 03, 2007 11:25 AM > To: [email protected] > Subject: [osg-users] Segfaulting somewhere in osgText > > (gdb) bt > #0 0x07b94280 in std::_Rb_tree_increment () from > /usr/lib/libstdc++.so.6 > #1 0x005c700f in osgText::Text::computePositions () from > /usr/lib/libosgText.so.1 > #2 0x005cd80b in osgText::Text::drawImplementation () from > /usr/lib/libosgText.so.1 > #3 0x03a2d42f in osgUtil::RenderLeaf::render () from > /usr/lib/libosgUtil.so.1 > #4 0x03a2554d in osgUtil::RenderBin::drawImplementation () > from /usr/lib/libosgUtil.so.1 > #5 0x03a25200 in osgUtil::RenderBin::draw () from > /usr/lib/libosgUtil.so.1 > #6 0x03a255f0 in osgUtil::RenderBin::drawImplementation () > from /usr/lib/libosgUtil.so.1 > #7 0x03a31453 in osgUtil::RenderStage::drawImplementation () > from /usr/lib/libosgUtil.so.1 > #8 0x03a25200 in osgUtil::RenderBin::draw () from > /usr/lib/libosgUtil.so.1 > #9 0x03a30d8b in osgUtil::RenderStage::drawInner () from > /usr/lib/libosgUtil.so.1 #10 0x03a30c3c in > osgUtil::RenderStage::draw () from /usr/lib/libosgUtil.so.1 > #11 0x03a44112 in osgUtil::SceneView::draw () from > /usr/lib/libosgUtil.so.1 > #12 0x00579ad2 in > osgProducer::OsgSceneHandler::drawImplementation () from > /usr/lib/libosgProducer.so.1 > #13 0x0057b1ef in osgProducer::OsgSceneHandler::draw () from > /usr/lib/libosgProducer.so.1 > #14 0x006a5a0d in Producer::Camera::_frame () from > /usr/lib/libProducer.so.1 > #15 0x006a6390 in Producer::Camera::frame () from > /usr/lib/libProducer.so.1 > #16 0x006aa818 in Producer::CameraGroup::_singleThreadedFrame > () from /usr/lib/libProducer.so.1 > #17 0x006aa9d8 in Producer::CameraGroup::_frame () from > /usr/lib/libProducer.so.1 > #18 0x006aaa68 in Producer::CameraGroup::frame () from > /usr/lib/libProducer.so.1 > #19 0x0056fb71 in osgProducer::OsgCameraGroup::frame () from > /usr/lib/libosgProducer.so.1 #20 0x005915c2 in > osgProducer::Viewer::frame () from /usr/lib/libosgProducer.so.1 > #21 0x0804a12f in main (argc=0, argv=0x0) at pronto.cpp:165 > > Hello. > > I've got an app that spins an object in one thread and spits > text to the screen in another thread. Things work fine for > about 60 seconds until the app segfaults somewhere in osgText > (stacktrace above). > > int log_msg (char *thestring) { > int a; > for (a=0;a<(NUMLINES-1);a++) { > text[a]->setText(text[a+1]->getText()); > } > text[NUMLINES-1]->setText(thestring); > } > > The above is called from the second thread to update the text > (scroll the > text) in the scene. If I comment-out the setText() calls, > everything is fine. > > The segfault is not always in the same place, but always > somewhere inside of osgText. > > Everything is running under linux with a very recent release > of OSG (got it from the tarball about 2 weeks ago). > > Under cygwin, it Segfaults in osgText::Text::setText() > without even pulling up an initial window. > > Different stacktraces with the same code: > > Program received signal SIGSEGV, Segmentation fault. > [Switching to Thread -1208239856 (LWP 24960)] > 0x005c6ec3 in osgText::Text::computePositions () from > /usr/lib/libosgText.so.1 > (gdb) bt > #0 0x005c6ec3 in osgText::Text::computePositions () from > /usr/lib/libosgText.so.1 > #1 0x005cd80b in osgText::Text::drawImplementation () from > /usr/lib/libosgText.so.1 > #2 0x03a2d42f in osgUtil::RenderLeaf::render () from > /usr/lib/libosgUtil.so.1 > #3 0x03a2554d in osgUtil::RenderBin::drawImplementation () > from /usr/lib/libosgUtil.so.1 > #4 0x03a25200 in osgUtil::RenderBin::draw () from > /usr/lib/libosgUtil.so.1 > #5 0x03a255f0 in osgUtil::RenderBin::drawImplementation () > from /usr/lib/libosgUtil.so.1 > #6 0x03a31453 in osgUtil::RenderStage::drawImplementation () > from /usr/lib/libosgUtil.so.1 > #7 0x03a25200 in osgUtil::RenderBin::draw () from > /usr/lib/libosgUtil.so.1 > #8 0x03a30d8b in osgUtil::RenderStage::drawInner () from > /usr/lib/libosgUtil.so.1 > #9 0x03a30c3c in osgUtil::RenderStage::draw () from > /usr/lib/libosgUtil.so.1 #10 0x03a44112 in > osgUtil::SceneView::draw () from /usr/lib/libosgUtil.so.1 > #11 0x00579ad2 in > osgProducer::OsgSceneHandler::drawImplementation () from > /usr/lib/libosgProducer.so.1 > #12 0x0057b1ef in osgProducer::OsgSceneHandler::draw () from > /usr/lib/libosgProducer.so.1 > #13 0x006a5a0d in Producer::Camera::_frame () from > /usr/lib/libProducer.so.1 > #14 0x006a6390 in Producer::Camera::frame () from > /usr/lib/libProducer.so.1 > #15 0x006aa818 in Producer::CameraGroup::_singleThreadedFrame > () from /usr/lib/libProducer.so.1 > #16 0x006aa9d8 in Producer::CameraGroup::_frame () from > /usr/lib/libProducer.so.1 > #17 0x006aaa68 in Producer::CameraGroup::frame () from > /usr/lib/libProducer.so.1 > #18 0x0056fb71 in osgProducer::OsgCameraGroup::frame () from > /usr/lib/libosgProducer.so.1 > #19 0x005915c2 in osgProducer::Viewer::frame () from > /usr/lib/libosgProducer.so.1 #20 0x0804a1bb in main > (argc=Cannot access memory at address 0x0 > ) at pronto.cpp:165 > > (next one was quick, and during a resize of the window) > > Program received signal SIGSEGV, Segmentation fault. > [Switching to Thread -1208297200 (LWP 25068)] 0x005d242c in > std::__uninitialized_fill_n_aux<std::vector<osg::Vec3f, > std::allocator<osg::Vec3f> >*, unsigned int, > std::vector<osg::Vec3f, std::allocator<osg::Vec3f> > > () > from /usr/lib/libosgText.so.1 > (gdb) bt > #0 0x005d242c in > std::__uninitialized_fill_n_aux<std::vector<osg::Vec3f, > std::allocator<osg::Vec3f> >*, unsigned int, > std::vector<osg::Vec3f, std::allocator<osg::Vec3f> > > () > from /usr/lib/libosgText.so.1 > #1 0x005d252f in > std::__uninitialized_fill_n_a<std::vector<osg::Vec3f, > std::allocator<osg::Vec3f> >*, unsigned int, > std::vector<osg::Vec3f, std::allocator<osg::Vec3f> >, > std::vector<osg::Vec3f, std::allocator<osg::Vec3f> > > () > from /usr/lib/libosgText.so.1 > #2 0x005d2a1e in std::vector<std::vector<osg::Vec3f, > std::allocator<osg::Vec3f> >, > std::allocator<std::vector<osg::Vec3f, > std::allocator<osg::Vec3f> > > >::_M_fill_insert () > from /usr/lib/libosgText.so.1 > #3 0x005c60bc in osgText::Text::drawForegroundText () from > /usr/lib/libosgText.so.1 > #4 0x005cd163 in osgText::Text::renderOnlyForegroundText () > from /usr/lib/libosgText.so.1 > #5 0x005ce4e2 in osgText::Text::drawImplementation () from > /usr/lib/libosgText.so.1 > #6 0x03a2d42f in osgUtil::RenderLeaf::render () from > /usr/lib/libosgUtil.so.1 > #7 0x03a2554d in osgUtil::RenderBin::drawImplementation () > from /usr/lib/libosgUtil.so.1 > #8 0x03a25200 in osgUtil::RenderBin::draw () from > /usr/lib/libosgUtil.so.1 > #9 0x03a255f0 in osgUtil::RenderBin::drawImplementation () > from /usr/lib/libosgUtil.so.1 #10 0x03a31453 in > osgUtil::RenderStage::drawImplementation () from > /usr/lib/libosgUtil.so.1 > #11 0x03a25200 in osgUtil::RenderBin::draw () from > /usr/lib/libosgUtil.so.1 > #12 0x03a30d8b in osgUtil::RenderStage::drawInner () from > /usr/lib/libosgUtil.so.1 > #13 0x03a30c3c in osgUtil::RenderStage::draw () from > /usr/lib/libosgUtil.so.1 > #14 0x03a44112 in osgUtil::SceneView::draw () from > /usr/lib/libosgUtil.so.1 > #15 0x00579ad2 in > osgProducer::OsgSceneHandler::drawImplementation () from > /usr/lib/libosgProducer.so.1 > #16 0x0057b1ef in osgProducer::OsgSceneHandler::draw () from > /usr/lib/libosgProducer.so.1 > #17 0x006a5a0d in Producer::Camera::_frame () from > /usr/lib/libProducer.so.1 > #18 0x006a6390 in Producer::Camera::frame () from > /usr/lib/libProducer.so.1 > #19 0x006aa818 in Producer::CameraGroup::_singleThreadedFrame > () from /usr/lib/libProducer.so.1 #20 0x006aa9d8 in > Producer::CameraGroup::_frame () from /usr/lib/libProducer.so.1 > #21 0x006aaa68 in Producer::CameraGroup::frame () from > /usr/lib/libProducer.so.1 > #22 0x0056fb71 in osgProducer::OsgCameraGroup::frame () from > /usr/lib/libosgProducer.so.1 > #23 0x005915c2 in osgProducer::Viewer::frame () from > /usr/lib/libosgProducer.so.1 > #24 0x0804a1bb in main (argc=136754104, argv=0x826b3b8) at > pronto.cpp:165 > > > - Steve > > -- > EMAIL: (h) [EMAIL PROTECTED] WEB: http://badcheese.com/~steve > > > _______________________________________________ > osg-users mailing list > [email protected] > http://openscenegraph.net/mailman/listinfo/osg-users > http://www.openscenegraph.org/ _______________________________________________ osg-users mailing list [email protected] http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
