Re: [PATCH v2] blame: fix segfault on untracked files

[Junio C Hamano <gitster@pobox.com>]

Thomas Gummerer <t.gummerer@gmail.com> writes:

>> The point of this fix is not that we show the exact error message,
>> but we fail in a controlled manner.  I think
>>
>> test_expect_success 'blame untracked file in empty repo' '
>>                >untracked &&
>>                test_must_fail git blame untracked
>>        '
>>
>> is sufficient.
>
> Yeah, I agree with that.
>
> Thanks for the review!

Thanks for a quick follow-up fix during -rc period.

>>  builtin/blame.c  | 3 ++-
>  t/t8002-blame.sh | 5 +++++
>  2 files changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/builtin/blame.c b/builtin/blame.c
> index 7ec7823..a5bbf91 100644
> --- a/builtin/blame.c
> +++ b/builtin/blame.c
> @@ -2244,7 +2244,8 @@ static void verify_working_tree_path(struct commit *work_tree, const char *path)
>  	pos = cache_name_pos(path, strlen(path));
>  	if (pos >= 0)
>  		; /* path is in the index */
> -	else if (!strcmp(active_cache[-1 - pos]->name, path))
> +	else if (-1 - pos < active_nr &&
> +		 !strcmp(active_cache[-1 - pos]->name, path))
>  		; /* path is in the index, unmerged */
>  	else
>  		die("no such path '%s' in HEAD", path);
> diff --git a/t/t8002-blame.sh b/t/t8002-blame.sh
> index ff09ace..ab79de9 100755
> --- a/t/t8002-blame.sh
> +++ b/t/t8002-blame.sh
> @@ -6,6 +6,11 @@ test_description='git blame'
>  PROG='git blame -c'
>  . "$TEST_DIRECTORY"/annotate-tests.sh
>  
> +test_expect_success 'blame untracked file in empty repo' '
> +	>untracked &&
> +	test_must_fail git blame untracked
> +'
> +
>  PROG='git blame -c -e'
>  test_expect_success 'blame --show-email' '
>  	check_count \