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-rw-r--r--read-cache.c3
-rw-r--r--split-index.c3
2 files changed, 6 insertions, 0 deletions
diff --git a/read-cache.c b/read-cache.c
index cbe73f14e5..a932e01fc7 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -3009,6 +3009,9 @@ static int do_write_index(struct index_state *istate, struct tempfile *tempfile,
!is_null_oid(&istate->split_index->base_oid)) {
struct strbuf sb = STRBUF_INIT;
+ if (istate->sparse_index)
+ die(_("cannot write split index for a sparse index"));
+
err = write_link_extension(&sb, istate) < 0 ||
write_index_ext_header(f, eoie_c, CACHE_EXT_LINK,
sb.len) < 0;
diff --git a/split-index.c b/split-index.c
index 8e52e891c3..9d0ccc30d0 100644
--- a/split-index.c
+++ b/split-index.c
@@ -5,6 +5,9 @@
struct split_index *init_split_index(struct index_state *istate)
{
if (!istate->split_index) {
+ if (istate->sparse_index)
+ die(_("cannot use split index with a sparse index"));
+
CALLOC_ARRAY(istate->split_index, 1);
istate->split_index->refcount = 1;
}