[Issue 9685] Context pointer of struct isn't copied when a closure is passed by alias

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=9685

--- Comment #2 from John Colvin <john.loughran.colvin at gmail.com> ---
This doesn't happen with ldc 0.15.1

Observed in dmd git HEAD, 2.066.1 and 2.065.0

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