There's no reason to split after inserting into an empty bucket. A split only happens if 1) there's a collision (counter is true) and 2) the number of elements (including the newly inserted element) is greater than the number of buckets (xhv->xhv_keys > (IV)xhv->xhv_max> is true).

In reply to Re: When does Perl double the number of buckets in hash? by ikegami
in thread When does Perl double the number of buckets in hash? by Anonymous Monk

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