BUG: Fix setstate logic for empty arrays #20681
Merged
+85
−47
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Backport of #20954.
Also cleans up the clearing of the mem_handler slightly. Lets try
to make sure it is always NULL when OWNDATA is not set (and an error
is given), just so there can't be any accidental double-frees.
Obviously, this function has more problems then the ones fixed here...
This introduces the NBYTES_ALLOCATED helper basically just for these
two places to fix the UHOH prints also...