[PATCH v2] pack-redundant: fix crash when one packfile in repo
- From
Jiang Xin <worldhello.net@gmail.com>
- Date
- Dec 17, 2020, 01:57 UTC
- Message-ID
- <20201217015709.28827-1-worldhello.net@gmail.com>
- In-Reply-To
- <xmqqo8it4pxt.fsf@gitster.c.googlers.com>
From: Jiang Xin <zhiyou.jx@alibaba-inc.com>
Command `git pack-redundant --all` will crash if there is only one packfile in the repository. This is because, if there is only one packfile in local_packs, `cmp_local_packs` will do nothing and will leave `pl->unique_objects` as uninitialized.
Also add testcases for repository with no packfile and one packfile in t5323.
Reported-by: Daniel C. Klauer <daniel.c.klauer@web.de> Signed-off-by: Jiang Xin <zhiyou.jx@alibaba-inc.com> --- builtin/pack-redundant.c | 6 ++++++ t/t5323-pack-redundant.sh | 37 +++++++++++++++++++++++++++++++++---- 2 files changed, 39 insertions(+), 4 deletions(-)
diff --git a/builtin/pack-redundant.c b/builtin/pack-redundant.c index 178e3409b7..690775fa82 100644 --- a/builtin/pack-redundant.c +++ b/builtin/pack-redundant.c @@ -473,6 +473,12 @@ static void cmp_local_packs(void) { struct pack_list *subset, *pl = local_packs; + /* only one packfile */ + if (!pl->next) { + llist_init(&pl->unique_objects); + return; + } + while ((subset = pl)) { while ((subset = subset->next)) cmp_two_packs(pl, subset); diff --git a/t/t5323-pack-redundant.sh b/t/t5323-pack-redundant.sh index 6b4d1ca353..7e3340843f 100755 --- a/t/t5323-pack-redundant.sh +++ b/t/t5323-pack-redundant.sh @@ -112,19 +112,28 @@ test_expect_success 'setup master repo' ' create_commits_in "$master_repo" A B C D E F G H I J K L M N O P Q R ' +test_expect_success 'master: pack-redundant works with no packfile' ' + ( + cd "$master_repo" && + cat >expect <<-EOF && + fatal: Zero packs found! + EOF + test_must_fail git pack-redundant --all >actual 2>&1 && + test_cmp expect actual + ) +' + ############################################################################# # Chart of packs and objects for this test case # # | T A B C D E F G H I J K L M N O P Q R # ----+-------------------------------------- # P1 | x x x x x x x x -# P2 | x x x x x x x -# P3 | x x x x x x # ----+-------------------------------------- -# ALL | x x x x x x x x x x x x x x x +# ALL | x x x x x x x x # ############################################################################# -test_expect_success 'master: no redundant for pack 1, 2, 3' ' +test_expect_success 'master: pack-redundant works with one packfile' ' create_pack_in "$master_repo" P1 <<-EOF && $T $A @@ -135,6 +144,26 @@ test_expect_success 'master: no redundant for pack 1, 2, 3' ' $F $R EOF + ( + cd "$master_repo" && + git pack-redundant --all >out && + test_must_be_empty out + ) +' + +############################################################################# +# Chart of packs and objects for this test case +# +# | T A B C D E F G H I J K L M N O P Q R +# ----+-------------------------------------- +# P1 | x x x x x x x x +# P2 | x x x x x x x +# P3 | x x x x x x +# ----+-------------------------------------- +# ALL | x x x x x x x x x x x x x x x +# +############################################################################# +test_expect_success 'master: no redundant for pack 1, 2, 3' ' create_pack_in "$master_repo" P2 <<-EOF && $B $C
-- 2.30.0.rc0