[Issue 12839] std.parallelism with nested functions and lambdas. Segfault

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12839

--- Comment #6 from Lars T. Kyllingstad <bugzilla at kyllingen.net> ---
See also issue #16051, which deals with the same ICE.  Not sure if it's a
duplicate, though.

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