The package should be updated to include this commit: https://github.com/CastXML/CastXML/commit/96bafbccfdc0c3055d152db42de4780b5120c6e5 which avoids an assertion with the LLVM provided by Fedora.
castxml-0.1-0.13.20161006git05db76f.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-3609088bd5
castxml-0.1-0.13.20161006git05db76f.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-4378785aa3
castxml-0.1-0.13.20161006git05db76f.fc25 has been pushed to the Fedora 25 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-a373eca05c
castxml-0.1-0.13.20161006git05db76f.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.
castxml-0.1-0.13.20161006git05db76f.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
castxml-0.1-0.13.20161006git05db76f.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.