Junio C Hamano <gits...@pobox.com> writes:
> Thomas Gummerer <t.gumme...@gmail.com> writes:
>> All fields except index_state->version are reset in discard_index.
>> Reset the version too.
> What is the practical consequence of not clearing this field? I
> somehow have a feeling that this was done deliberately, so that we
> can stick to the version of the index file format better, once the
> user said "update-index --index-version $N" to set it up. I suspect
> that the patch would affect a codepath that does read_cache(), calls
> discard_index(), populates the index and then does write_cache().
> We stick to the version the user specified earlier in our current
> code, while the patched code will revert to whatever default built
> into your Git binary, no?
Yeah you're right, I missed that use-case. I'll drop this patch from
the re-roll. Sorry for the noise.
>> Signed-off-by: Thomas Gummerer <t.gumme...@gmail.com>
>> read-cache.c | 1 +
>> 1 file changed, 1 insertion(+)
>> diff --git a/read-cache.c b/read-cache.c
>> index de0bbcd..1e22f6f 100644
>> --- a/read-cache.c
>> +++ b/read-cache.c
>> @@ -1558,6 +1558,7 @@ int discard_index(struct index_state *istate)
>> for (i = 0; i < istate->cache_nr; i++)
>> + istate->version = 0;
>> istate->cache_nr = 0;
>> istate->cache_changed = 0;
>> istate->timestamp.sec = 0;
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