oneway_merge(): only lstat() when told to update worktree

diff --git a/t/t2107-update-index-basic.sh b/t/t2107-update-index-basic.sh
index 809fafe208cbf68121295922a4c230b2a5e1aee3..0dbbb00d740da8b1e62325c7daea659bb97eb399 100755 (executable)
--- a/t/t2107-update-index-basic.sh
+++ b/t/t2107-update-index-basic.sh
@@ -29,4 +29,23 @@ test_expect_success 'update-index -h with corrupt index' '
        grep "[Uu]sage: git update-index" broken/usage
 '
 
+test_expect_success '--cacheinfo does not accept blob null sha1' '
+       echo content >file &&
+       git add file &&
+       git rev-parse :file >expect &&
+       test_must_fail git update-index --cacheinfo 100644 $_z40 file &&
+       git rev-parse :file >actual &&
+       test_cmp expect actual
+'
+
+test_expect_success '--cacheinfo does not accept gitlink null sha1' '
+       git init submodule &&
+       (cd submodule && test_commit foo) &&
+       git add submodule &&
+       git rev-parse :submodule >expect &&
+       test_must_fail git update-index --cacheinfo 160000 $_z40 submodule &&
+       git rev-parse :submodule >actual &&
+       test_cmp expect actual
+'
+
 test_done