[Issue 19430] wrong code for `this =`, corrupted memory issue

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19430

--- Comment #8 from Stanislav Blinov <stanislav.blinov at gmail.com> ---
Working example:

https://run.dlang.io/is/dnxQNx

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