commit | 2049b8dc65e7371c56452cfda5234182d58b704e | [log] [tgz] |
---|---|---|
author | Johannes Schindelin <johannes.schindelin@gmx.de> | Mon Sep 30 10:21:55 2019 -0700 |
committer | Junio C Hamano <gitster@pobox.com> | Wed Oct 02 14:44:54 2019 +0900 |
tree | 50ad08a526b3ef7bd06beceb6255984b78f5af64 | |
parent | 97fff6101220b66bc293239ab2cf29fc3624072b [diff] |
diffcore_rename(): use a stable sort During Git's rename detection, the file names are sorted. At the moment, this job is performed by `qsort()`. As that function is not guaranteed to implement a stable sort algorithm, this can lead to inconsistent and/or surprising behavior: a rename might be detected differently depending on the platform where Git was run. The `qsort()` in MS Visual C's runtime does _not_ implement a stable sort algorithm, and it even leads to an inconsistency leading to a test failure in t3030.35 "merge-recursive remembers the names of all base trees": a different code path than on Linux is taken in the rename detection of an ambiguous rename between either `e` to `a` or `a~Temporary merge branch 2_0` to `a` during a recursive merge, unexpectedly resulting in a clean merge. Let's use the stable sort provided by `git_stable_qsort()` to avoid this inconsistency. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations and full access to internals.
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