I'll try 5.10.1 but that will take a while to build and then install all the modules. It will also be annoying if it is fixed in 5.10.1 as this box is currently only using a packaged perl and I think the only upgrade path would be to delete the packaged perl and build our own (thus losing the benefit of the package system). There is some XS code (DBD::Oracle) inside the try and catch blocks but it works inside a simple eval (but then again, as you say Try::Tiny is really only an eval wrapper).