Hi Serge, Creating objects with and storing them locally with a C pointer rather than a ref_ptr<> is usually just fine if the pointer just lives in local scope, but there are gotchas lurking if your do certain operations. Most places where a C pointer is used within the OSG code base is because its fine to do in that context. Problems typically occur when you try to use a C pointer as global.
Your own intermittent crash is more likely to be something like a thread sensitivity. Is your app multi-thread? In what ways? What is the nature of the database setup? Robert. On Dec 11, 2007 1:33 PM, Serge Lages <[EMAIL PROTECTED]> wrote: > Hi all, > > I am currently having a random crash with osgText, here is the context : I > read some IVE files with texts inside, when loading the text it crashs into > osgText::Text::setFont (Text.cpp line 119) because the variable "font" is a > corrupted pointer (not setted to NULL, but typically a variable already > deleted). > > My investigations bring me to osgText::readFontFile into the file Font.cpp. > Line 110 we can see : > > osg::Object* object = osgDB::readObjectFile(foundFile, userOptions ? > userOptions : localOptions.get()); > > I always thought that doing this may lead to a crash, and that we must do : > > osg::ref_ptr<osg::Object> object = osgDB::readObjectFile(foundFile, > userOptions ? userOptions : localOptions.get()); > > To be sure that readObjectFile will not delete the object by deleting its > ReaderWriter::ReadResult. > And line 117, the test object->referenceCount()==0 makes me also perplex, if > the object's reference count is set to 0, shouldn't it be already deleted ? > > My crash is really a random one, but always in the same place, that's why I > think that sometime the font object is deleted before being assigned to a > ref_ptr into setFont. > > -- > Serge Lages > http://www.tharsis-software.com > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
