The segfault is triggered when OSG connot find a plugin which can load the image, such as because of a wrong or unset OSG_LIBRARY_PATH environment variable.
In that case, res.getImage() is NULL and dereferencing NULL gives the segfault.
Index: simgear/scene/model/model.cxx
===================================================================
RCS file: /var/cvs/SimGear-0.3/source/simgear/scene/model/model.cxx,v
retrieving revision 1.55
diff -u -p -r1.55 model.cxx
--- simgear/scene/model/model.cxx 3 Jun 2007 18:21:04 -0000 1.55
+++ simgear/scene/model/model.cxx 18 Jul 2007 12:12:26 -0000
@@ -193,12 +193,17 @@ public:
osgDB::Registry* registry = osgDB::Registry::instance();
osgDB::ReaderWriter::ReadResult res;
res = registry->readImageImplementation(absFileName, opt);
- if (res.loadedFromCache())
- SG_LOG(SG_IO, SG_INFO, "Returning cached image \""
- << res.getImage()->getFileName() << "\"");
- else
- SG_LOG(SG_IO, SG_INFO, "Reading image \""
- << res.getImage()->getFileName() << "\"");
+ if (res.getImage()) {
+ if (res.loadedFromCache())
+ SG_LOG(SG_IO, SG_INFO, "Returning cached image \""
+ << res.getImage()->getFileName() << "\"");
+ else
+ SG_LOG(SG_IO, SG_INFO, "Reading image \""
+ << res.getImage()->getFileName() << "\"");
+ } else {
+ SG_LOG(SG_IO, SG_INFO, "Reading image \"" << fileName
+ << "\" failed");
+ }
return res;
}
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