X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=builtin-diff-index.c;h=04837494feba401c7f689eab5574768d3fd126de;hb=bf96c931994382d99e4e4d55f7b22b6779787a9d;hp=17d851b29ee5de33e01745eabcd5cd735c30b352;hpb=1b1dd23f2d6a707b7077cdf6bc6d4055bd0bfb7d;p=git.git

diff --git a/builtin-diff-index.c b/builtin-diff-index.c
index 17d851b29..04837494f 100644
--- a/builtin-diff-index.c
+++ b/builtin-diff-index.c
@@ -39,6 +39,8 @@ int cmd_diff_index(int argc, const char **argv, const char *prefix)
 	if (rev.pending.nr != 1 ||
 	    rev.max_count != -1 || rev.min_age != -1 || rev.max_age != -1)
 		usage(diff_cache_usage);
+	if (!cached)
+		setup_work_tree();
 	if (read_cache() < 0) {
 		perror("read_cache");
 		return -1;