X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=sha1_name.c;h=c4fdaded01192f4ddb3c8956dd5d1f7b83606817;hb=720ec6b870ba913affd0f6c01d5a61b9b2c5aadb;hp=75a5a7e96f292bed344a7609fca2f3a45ba4314e;hpb=832e719d79296f1942a2aca5fb067bc610986fc4;p=git.git

diff --git a/sha1_name.c b/sha1_name.c
index 75a5a7e96..c4fdaded0 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -309,7 +309,7 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
 
 	/* basic@{time or number} format to query ref-log */
 	reflog_len = at = 0;
-	if (str[len-1] == '}') {
+	if (len && str[len-1] == '}') {
 		for (at = 0; at < len - 1; at++) {
 			if (str[at] == '@' && str[at+1] == '{') {
 				reflog_len = (len-1) - (at+2);