r64: Increase number of frames in ART iterator #595
Merged
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Fixes #593. With a max-depth ART, it's possible to have the following node structure, where
N4 = Node4
,L = Leaf
:ART iterators carry around a frame per node in the path to the leaf, including the leaf. This can therefore result in 7 frames: one for each differing key byte, plus the leaf node itself.
To handle this case we therefore need 7 iterator frames rather than 6.