[Issue 16149] foreach_reverse can't handle index variable of type int

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=16149

--- Comment #5 from Steven Schveighoffer <schveiguy at yahoo.com> ---
int x = a.length would continue to be invalid (on 64-bit CPU). It's just for
foreach_reverse.

What feels wrong is the OP's code that I can foreach some array in a certain
way, but not foreach reverse the identical thing.

My point was that foreach_reverse with a smaller index is valid for all cases
that foreach with a smaller index is valid. But foreach we allow and
foreach_reverse we disallow. Seems arbitrary.

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