ROOT 6.6 shows the following error at runtime:
Error in cling::AutoloadingVisitor::InsertIntoAutoloadingState:
Missing FileEntry for LinkDef.h
requested to autoload type MyClass
This is apparently because the LinkDef.h file contains an #include for the header with this class definition. We don't expose LinkDef.h files at runtime. And this situation is present in many of ATLAS LinkDef.h files, so we would prefer a fix on the ROOT side.
Reproducer attached. Run with "sh run.sh"