*************************************************/
/* Copyright (c) University of Cambridge 1995 - 2018 */
+/* Copyright (c) The Exim Maintainers 2020 */
/* See the file NOTICE for conditions of use and distribution. */
else
{
EXIM_DATUM key_datum, result_datum;
- uschar * dirname = string_copy(oncelog);
- uschar * s;
+ uschar * dirname, * s;
- if ((s = Ustrrchr(dirname, '/'))) *s = '\0';
+ dirname = (s = Ustrrchr(oncelog, '/'))
+ ? string_copyn(oncelog, s - oncelog) : NULL;
EXIM_DBOPEN(oncelog, dirname, O_RDWR|O_CREAT, ob->mode, &dbm_file);
if (!dbm_file)
{