[PATCH v3 22/26] resolve-undo: ensure full index

["Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com>]

From: Derrick Stolee <dstolee@microsoft.com>

Before iterating over all cache entries, ensure that a sparse index is
expanded to a full index to avoid unexpected behavior.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
---
 resolve-undo.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/resolve-undo.c b/resolve-undo.c
index 236320f179cb..ee36ca58b135 100644
--- a/resolve-undo.c
+++ b/resolve-undo.c
@@ -172,6 +172,8 @@ void unmerge_marked_index(struct index_state *istate)
 	if (!istate->resolve_undo)
 		return;
 
+	/* TODO: audit for interaction with sparse-index. */
+	ensure_full_index(istate);
 	for (i = 0; i < istate->cache_nr; i++) {
 		const struct cache_entry *ce = istate->cache[i];
 		if (ce->ce_flags & CE_MATCHED)
@@ -186,6 +188,8 @@ void unmerge_index(struct index_state *istate, const struct pathspec *pathspec)
 	if (!istate->resolve_undo)
 		return;
 
+	/* TODO: audit for interaction with sparse-index. */
+	ensure_full_index(istate);
 	for (i = 0; i < istate->cache_nr; i++) {
 		const struct cache_entry *ce = istate->cache[i];
 		if (!ce_path_match(istate, ce, pathspec, NULL))
-- 
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