split-index: it really is incompatible with the sparse index

... at least for now. So let's error out if we are even trying to initialize the split index when the index is sparse, or when trying to write the split index extension for a sparse index. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Reviewed-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Johannes Schindelin committed Jan 19, 2022 at 17:29 UTC 451b66c533b9ede47951d16c0127ab33372125ca
2 files changed +6
read-cache.c
+3
@@ -3009,6 +3009,9 @@ static int do_write_index(struct index_state *istate, struct tempfile *tempfile,
3009 !is_null_oid(&istate->split_index->base_oid)) {
3010 struct strbuf sb = STRBUF_INIT;
3011
3012 + if (istate->sparse_index)
3013 + die(_("cannot write split index for a sparse index"));
3014 +
3015 err = write_link_extension(&sb, istate) < 0 ||
3016 write_index_ext_header(f, eoie_c, CACHE_EXT_LINK,
3017 sb.len) < 0;
split-index.c
+3
@@ -5,6 +5,9 @@
5 struct split_index *init_split_index(struct index_state *istate)
6 {
7 if (!istate->split_index) {
8 + if (istate->sparse_index)
9 + die(_("cannot use split index with a sparse index"));
10 +
11 CALLOC_ARRAY(istate->split_index, 1);
12 istate->split_index->refcount = 1;
13 }