[Issue 20964] poor CTFE support for backward pointer iteration

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20964

Walter Bright <bugzilla at digitalmars.com> changed:

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--- Comment #2 from Walter Bright <bugzilla at digitalmars.com> ---
It is not normal practice nor allowed by the memory model to point before the
beginning of a memory block. Pointing one past the end is allowed.

The conventional solution is to use pre-decrement for reversing, that way the
iteration can start with a pointer one past the end.

I'm not understanding why the conventional solution won't work for your case.

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