macOS: debugging hell - strange behavior in lldb and gdb

[Relja Ljubobratovic via Digitalmars-d-debugger]

On Wednesday, 15 February 2017 at 07:45:41 UTC, Jacob Carlborg 
wrote:
> D should support LLDB, or LLDB should support D (whichever way 
> it is). LLDB is the system debugger on macOS.

Any hints on this behavior with lldb on my system, without -gc 
flag? (step-over works as step-in). Also, forgot to ask - where 
would I knock for a fix? llvm or ldc repo?