Intro.partialSort: Fix out-of-range accesses #27
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Previously `Data.Vector.Algorithms.Intro.partialSort k v` would stumble upon undefined behavior via out-of-range array accesses if `length v < k`. Avoid this by clamping k to the length of the region being sorted.
erikd
approved these changes
Dec 6, 2020
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Thanks @bgamari ! |
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Previously
Data.Vector.Algorithms.Intro.partialSort k vwouldstumble upon undefined behavior via out-of-range array accesses
if
length v < k. Avoid this by clamping k to the length of theregion being sorted.
This bug can result in segmentation faults and other terrible things.
Consequently, it would be good to release this fix quickly.