Thanks for all the data. I will try to have a look at it. Just two things that might help you straight away.
1. The version you are using is rather old. You might discover that some more recent version has this issue fixed. Just in case you don’t know about it you can download clang binaries here: http://releases.llvm.org/download.html Ubuntu 14.04 is supported.
2. If you want to learn more about clang command line options these are places to check: