C++14 and C11 support sucks in OpenBSDs default compiler - any chance of Clang in base?

[Some Developer]

I'm not entirely aware of the changes that the OpenBSD developers have 
made to the version of GCC that ships with OpenBSD but is there any work 
being done on including Clang in OpenBSD base?

It has a BSD compatible license unlike GCC. It has its own debugger with 
the same license unlike GDB.

So what are the reasons why OpenBSD has so far shunned Clang and LLDB? 
Is it missing some extra security features that the OpenBSD team have 
added to their version of GCC?

Any info is appreciated.