Memory corruption fix (bad flood decode bounds check) 🙃 #89
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Thanks to @notune for the discovery/stacktrace/fix! (the trifecta!)
Ported upstream from the cfc PR (sz3/cfc#29). I also fixed the logic one layer up (in FloodDecodePositions), so now we have some defense in depth...
sz3/cfc#29
sz3/cfc#28