[Issue 12624] Internal error: backend\cgobj.c 2313 with Rebindable!(immutable TimeZone) in std.datetime

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12624

--- Comment #2 from Jonathan M Davis <issues.dlang at jmdavisProg.com> ---
Well, this is a finicky one. I'd tried to reduce the failing code to something
more manageable in the past and failed, but I thought that I'd take another
stab at it, and simply copying the entire std.datetime module to a module
separate from Phobos (and changing the module declaration of course) and then
doing

Rebindable!(immutable TimeZone) _timezone = UTC();

works instead of failing like it does when that line is changed inside of
Phobos.

It wouldn't surprise me if this problem simply went away when I finally split
of std.datetime (which I think that I'm going to take another stab at getting
done shortly) simply due to how specific the failure is - which just means that
the compiler bug would then be hidden away again rather than anything truly
having been fixed (which certainly isn't good), but if it went away like that,
at least it wouldn't be blocking improvements to SysTime anymore.

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