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-rw-r--r--refs.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/refs.c b/refs.c
index 5e54af267a..676bfd550e 100644
--- a/refs.c
+++ b/refs.c
@@ -3353,8 +3353,8 @@ char *shorten_unambiguous_ref(const char *refname, int strict)
/* the rule list is NULL terminated, count them first */
for (nr_rules = 0; ref_rev_parse_rules[nr_rules]; nr_rules++)
- /* no +1 because strlen("%s") < strlen("%.*s") */
- total_len += strlen(ref_rev_parse_rules[nr_rules]);
+ /* -2 for strlen("%.*s") - strlen("%s"); +1 for NUL */
+ total_len += strlen(ref_rev_parse_rules[nr_rules]) - 2 + 1;
scanf_fmts = xmalloc(nr_rules * sizeof(char *) + total_len);