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authorLibravatar Derrick Stolee <dstolee@microsoft.com>2017-10-08 14:29:37 -0400
committerLibravatar Junio C Hamano <gitster@pobox.com>2017-10-10 08:57:24 +0900
commit19716b21a4255ecc7148b54ab2c78039c59f25bf (patch)
tree5f1cecbffc543c64e7c4c4f371d204424e1ce1bb /Documentation/git-ls-files.txt
parentGit 2.15-rc0 (diff)
downloadtgif-19716b21a4255ecc7148b54ab2c78039c59f25bf.tar.xz
cleanup: fix possible overflow errors in binary search
A common mistake when writing binary search is to allow possible integer overflow by using the simple average: mid = (min + max) / 2; Instead, use the overflow-safe version: mid = min + (max - min) / 2; This translation is safe since the operation occurs inside a loop conditioned on "min < max". The included changes were found using the following git grep: git grep '/ *2;' '*.c' Making this cleanup will prevent future review friction when a new binary search is contructed based on existing code. Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Reviewed-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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