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t7700: demonstrate repack flaw which may loosen objects unnecessarily

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If an unreferenced object exists in both a local pack and in either a pack
residing in an alternate object database or a local kept pack, then the
pack-objects call made by repack will loosen that object only to have it
immediately pruned by repack's call to prune-packed.

Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Brandon Casey 2009-03-21 17:25:30 -05:00 committed by Junio C Hamano
parent 4d6acb7041
commit 869a3d34c1
1 changed files with 17 additions and 0 deletions
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17
t/t7700-repack.sh
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@ -113,5 +113,22 @@ test_expect_success 'packed unreachable obs in alternate ODB are not loosened' '
test_must_fail git show $csha1
'
test_expect_failure 'local packed unreachable obs that exist in alternate ODB are not loosened' '
echo `pwd`/alt_objects > .git/objects/info/alternates &&
echo "$csha1" | git pack-objects --non-empty --all --reflog pack &&
rm -f .git/objects/pack/* &&
mv pack-* .git/objects/pack/ &&
# The pack-objects call on the next line is equivalent to
# git repack -A -d without the call to prune-packed
git pack-objects --honor-pack-keep --non-empty --all --reflog \
--unpack-unreachable </dev/null pack &&
rm -f .git/objects/pack/* &&
mv pack-* .git/objects/pack/ &&
test 0 = $(git verify-pack -v -- .git/objects/pack/*.idx |
egrep "^$csha1 " | sort | uniq | wc -l) &&
echo > .git/objects/info/alternates &&
test_must_fail git show $csha1
'
test_done