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Bounds check x & y.

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Rob Rix 2017-03-10 13:13:47 -05:00
parent 91694c4999
commit a15ae4b2e0
1 changed files with 3 additions and 1 deletions
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src/SES/Myers.hs
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@ -115,7 +115,9 @@ decompose myers = let ?callStack = popCallStack callStack in case myers of
maxD = (m + n) `ceilDiv` 2 maxD = (m + n) `ceilDiv` 2
slide eq (Endpoint x y) slide eq (Endpoint x y)
| (as Vector.! x) `eq` (bs Vector.! y) = slide eq (Endpoint (succ x) (succ y)) | x < length as
, y < length bs
, (as Vector.! x) `eq` (bs Vector.! y) = slide eq (Endpoint (succ x) (succ y))
| otherwise = Endpoint x y | otherwise = Endpoint x y
FindDPath (EditGraph as bs) Reverse (EditDistance d) (Diagonal k) -> return (Endpoint 0 0) FindDPath (EditGraph as bs) Reverse (EditDistance d) (Diagonal k) -> return (Endpoint 0 0)