[Issue 15840] std.typecons.RefCounted segfaults when checking isInitialized, then segfaults GDB

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=15840

--- Comment #1 from cy <dlang at verge.info.tm> ---
I should add that even when not crashing, whenever I p _store of any
RefCounted, gdb segfaults and silently dies. So that's actually probably not
part of the problem, but just gdb unable to handle whatever RefCounted is
doing.

--