On Fri, Mar 15 2019, Duy Nguyen wrote:
> On Thu, Mar 14, 2019 at 7:34 PM Ævar Arnfjörð Bjarmason
> <avarab@xxxxxxxxx> wrote:
>>
>> There's been a lot of changing of the hardcoded "40" values to
>> the_hash_algo->hexsz, but we've so far missed this one where we
>> hardcoded 38 for the loose object file length.
>
> Wow. Good catch.
>
>> diff --git a/builtin/gc.c b/builtin/gc.c
>> index 8c2312681c..733bd7bdf4 100644
>> --- a/builtin/gc.c
>> +++ b/builtin/gc.c
>> @@ -156,6 +156,7 @@ static int too_many_loose_objects(void)
>> int auto_threshold;
>> int num_loose = 0;
>> int needed = 0;
>> + const unsigned hexsz_loose = the_hash_algo->hexsz - 2;
>
> Since you're removing hard coded numbers. Another option is a
> combination of strlen(basename()) and
> loose_object_path(the_repository, , null_oid). They should also give
> the same 38. Then if loose object format is updated to use 3+ chars
> for the directory part, this code will not need update anymore.
>
> The downside of course is a lot more code. Or you can just introduce a
> new function to return this "hexsz - 2", keep that function close to
> fill_loose_path() with a comment there that the two functions should
> be aligned.
I think it's better to just keep hardcoding "2". We're very unlikely to
ever change objects/?? in favor of e.g. objects/???, and if we were that
would be a huge "hash function transition" of its own.
>>
>> dir = opendir(git_path("objects/17"));
>> if (!dir)
