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authorLibravatar Ævar Arnfjörð Bjarmason <avarab@gmail.com>2019-02-21 20:28:49 +0100
committerLibravatar Junio C Hamano <gitster@pobox.com>2019-02-22 11:20:56 -0800
commitb9cc405612f6badded21cb526cdeaa627fecbb37 (patch)
treec273daae27bd0fedd5a31f7c067d28c69cc7884e /t/t2026-worktree-prune.sh
parenttests: fix unportable "\?" and "\+" regex syntax (diff)
downloadtgif-b9cc405612f6badded21cb526cdeaa627fecbb37.tar.xz
commit-graph tests: fix unportable "dd" invocation
Change an unportable invocation of "dd" with count=0, that wanted to truncate the commit-graph file. In POSIX it is unspecified what happens when count=0 is provided[1]. The NetBSD "dd" behavior differs from GNU (and seemingly other BSDs), which has left this test broken since d2b86fbaa1 ("commit-graph: fix buffer read-overflow", 2019-01-15). Copying from /dev/null would seek/truncate to seek=$zero_pos and stop immediately after that (without being able to copy anything), which is the right way to truncate the file. 1. http://pubs.opengroup.org/onlinepubs/9699919799/utilities/dd.html Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Helped-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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