push tests: assert re-pushing annotated tags

diff --git a/refs/files-backend.c b/refs/files-backend.c
index a9a066dcfb60d83a10e27d1c0d1131faf2ae97a4..054306d7796670d6e6049074f501568c3eadaa58 100644 (file)
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -1582,26 +1582,17 @@ static int log_ref_write_fd(int fd, const struct object_id *old_oid,
                            const struct object_id *new_oid,
                            const char *committer, const char *msg)
 {
-       int msglen, written;
-       unsigned maxlen, len;
-       char *logrec;
-
-       msglen = msg ? strlen(msg) : 0;
-       maxlen = strlen(committer) + msglen + 100;
-       logrec = xmalloc(maxlen);
-       len = xsnprintf(logrec, maxlen, "%s %s %s\n",
-                       oid_to_hex(old_oid),
-                       oid_to_hex(new_oid),
-                       committer);
-       if (msglen)
-               len += copy_reflog_msg(logrec + len - 1, msg) - 1;
-
-       written = len <= maxlen ? write_in_full(fd, logrec, len) : -1;
-       free(logrec);
-       if (written < 0)
-               return -1;
+       struct strbuf sb = STRBUF_INIT;
+       int ret = 0;
 
-       return 0;
+       strbuf_addf(&sb, "%s %s %s", oid_to_hex(old_oid), oid_to_hex(new_oid), committer);
+       if (msg && *msg)
+               copy_reflog_msg(&sb, msg);
+       strbuf_addch(&sb, '\n');
+       if (write_in_full(fd, sb.buf, sb.len) < 0)
+               ret = -1;
+       strbuf_release(&sb);
+       return ret;
 }
 
 static int files_log_ref_write(struct files_ref_store *refs,