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pack-objects: Fix segfault when object count is less than thread count

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When partitioning the work amongst threads, dividing the number of
objects by the number of threads may return 0 when there are less
objects than threads; this will cause the subsequent code to segfault
when accessing list[sub_size-1].  Allow some threads to have
zero objects to work on instead of barfing, while letting others
to have more.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nicolas Pitre 2008-01-21 11:07:15 -05:00 committed by Junio C Hamano
parent 9288bedafa
commit 6fc74703de
1 changed files with 2 additions and 1 deletions
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3
builtin-pack-objects.c
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@ -1672,7 +1672,8 @@ static void ll_find_deltas(struct object_entry **list, unsigned list_size,
p[i].data_ready = 0;
/* try to split chunks on "path" boundaries */
while (sub_size < list_size && list[sub_size]->hash &&
while (sub_size && sub_size < list_size &&
list[sub_size]->hash &&
list[sub_size]->hash == list[sub_size-1]->hash)
sub_size++;