bisect: check for mandatory argument of 'bisect replay'

diff --git a/strbuf.c b/strbuf.c
index bc3a0802ea7e7b1743602972de182391b4bf0b3f..65b4cf43434a8b7327565d0e0f87d5378d098f99 100644 (file)
--- a/strbuf.c
+++ b/strbuf.c
@@ -399,6 +399,8 @@ int strbuf_branchname(struct strbuf *sb, const char *name)
 int strbuf_check_branch_ref(struct strbuf *sb, const char *name)
 {
        strbuf_branchname(sb, name);
+       if (name[0] == '-')
+               return CHECK_REF_FORMAT_ERROR;
        strbuf_splice(sb, 0, 0, "refs/heads/", 11);
        return check_ref_format(sb->buf);
 }