[Issue 16252] Region allocator should not be copyable

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=16252

Richard Cattermole <alphaglosined at gmail.com> changed:

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--- Comment #2 from Richard Cattermole <alphaglosined at gmail.com> ---
Alternatively, it should support moving rather than copying.

This allows other allocator data structures like free lists to move it into
their own memory (which is quite a useful trick).

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