git submodule: Add test cases for git submodule add

[git.git] / sha1_name.c

diff --git a/sha1_name.c b/sha1_name.c
index 159c2ab84fa2cdde0e540024a1ca22e0bbb43af8..722fc35a6d98e1c260c6e14738ad3b2d41d924aa 100644 (file)
--- 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);