char *bad_hex = sha1_to_hex(current_bad_sha1);
char *good_hex = join_sha1_array_hex(&good_revs, ' ');
- fprintf(stderr, "Warning: the merge base between %s and [%s] "
+ warning("the merge base between %s and [%s] "
"must be skipped.\n"
"So we cannot be sure the first bad commit is "
"between %s and %s.\n"
- "We continue anyway.\n",
+ "We continue anyway.",
bad_hex, good_hex, mb_hex, bad_hex);
free(good_hex);
}