BUG: Do not use nonzero fastpath on unaligned arrays #20179
Merged
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The fast-path does not handle unalgined access, previously only
bools had a fast path (and bools are by definition always aligned
since they are stored in a single byte/char).
Closes gh-19592
I also prefer the "macro" check, since user-dtypes can mess with the
kind
. The fast-path already has anelsize > 8
assertion (but not check). But if we anticipate hardware withlong long
bigger than 64bits, I am happy to put it back.