X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=sha1_name.c;h=722fc35a6d98e1c260c6e14738ad3b2d41d924aa;hb=652f0c8f1df362755253fe9c5a975be7e5a5cbdc;hp=159c2ab84fa2cdde0e540024a1ca22e0bbb43af8;hpb=c9d8563c815a6a90bcc15057de288684d7cae5ef;p=git.git

diff --git a/sha1_name.c b/sha1_name.c
index 159c2ab84..722fc35a6 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);