From: Junio C Hamano <gitster@pobox.com>
Date: Sun, 30 Aug 2020 16:15:10 GMT
Subject: Re: [PATCH] Avoid infinite loop in malformed packfiles
Message-ID: <xmqqwo1gglf5.fsf@gitster.c.googlers.com>
In-Reply-To: <59efeeab-49de-17e7-8b1c-355d6ef31b5d@web.de>

René Scharfe <l.s.r@web.de> writes:

>> Will that work? I'd expect that modern pack files end up being
>> offset deltas, rather than reference deltas.
>
> True, but going down all the way would work:

Perhaps, but I'd rather use pack-objects to prepare the repository
with no-delta-base-offset to force ref deltas.

> diff --git a/t/t5316-pack-delta-depth.sh b/t/t5316-pack-delta-depth.sh
> index 0f06c40eb1..7fd21cd3ce 100755
> --- a/t/t5316-pack-delta-depth.sh
> +++ b/t/t5316-pack-delta-depth.sh
> @@ -94,4 +94,15 @@ test_expect_success '--depth limits depth' '
>  	test_i18ncmp expect actual
>  '
>
> +test_expect_success 'maxAllowedDeltaDepth is respected' '
> +	git clone . clone1 &&
> +	(
> +		cd clone1 &&
> +		git repack -a -d &&
> +		test_config core.maxAllowedDeltaDepth 0 &&
> +		test_must_fail git fsck 2>err &&
> +		test_i18ngrep "overlong delta chain" err
> +	)
> +'
> +
>  test_done