[Issue 22128] opApply delegate can escape scope without duly invoking GC allocation

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22128

Walter Bright <bugzilla at digitalmars.com> changed:

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #2 from Walter Bright <bugzilla at digitalmars.com> ---
The problem is solved if -preview=dip1000 is used to compile it.

But as a general practice, I recommend adding `scope` to the delegate parameter
to opApply().

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