Ævar Arnfjörð Bjarmason 29fefafcba sparse-index API: BUG() out on NULL ensure_full_index() ...

Make the ensure_full_index() function stricter, and have it only
accept a non-NULL "struct index_state". This function (and this
behavior) was added in [1].

The only reason it needed to be this lax was due to interaction with
repo_index_has_changes(). See the addition of that code in [2].

The other reason for why this was needed dates back to interaction
with code added in [3]. In [4] we started calling ensure_full_index()
in unpack_trees(), but the caller added in 34110cd4e3 wants to pass
us a NULL "dst_index". Let's instead do the NULL check in
unpack_trees() itself.

1. 4300f8442a (sparse-index: implement ensure_full_index(), 2021-03-30)
2. 0c18c059a1 (read-cache: ensure full index, 2021-04-01)
3. 34110cd4e3 (Make 'unpack_trees()' have a separate source and
   destination index, 2008-03-06)
4. 6863df3550 (unpack-trees: ensure full index, 2021-03-30)

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Acked-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

2023-01-13 10:36:57 -08:00

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