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author | Derrick Stolee <dstolee@microsoft.com> | 2017-10-08 14:29:37 -0400 |
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committer | Junio C Hamano <gitster@pobox.com> | 2017-10-10 08:57:24 +0900 |
commit | 19716b21a4255ecc7148b54ab2c78039c59f25bf (patch) | |
tree | 5f1cecbffc543c64e7c4c4f371d204424e1ce1bb /Documentation/git-ls-files.txt | |
parent | Git 2.15-rc0 (diff) | |
download | tgif-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>
Diffstat (limited to 'Documentation/git-ls-files.txt')
0 files changed, 0 insertions, 0 deletions