Jiang Xin <worldhello.net@xxxxxxxxx> writes:
> From: Jiang Xin <zhiyou.jx@xxxxxxxxxxxxxxx>
>
> 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@xxxxxx>
> Signed-off-by: Jiang Xin <zhiyou.jx@xxxxxxxxxxxxxxx>
> ---
> builtin/pack-redundant.c | 6 ++++++
> t/t5323-pack-redundant.sh | 37 +++++++++++++++++++++++++++++++++----
> 2 files changed, 39 insertions(+), 4 deletions(-)
Thanks.
>
> 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
