--- /dev/null
+--- ./src/test/regress/pg_regress.c.orig 2020-08-10 23:15:53.000000000 +0200
++++ ./src/test/regress/pg_regress.c 2020-08-16 15:50:06.439293508 +0200
+@@ -2408,6 +2408,7 @@
+ header(_("starting postmaster"));
+ snprintf(buf, sizeof(buf),
+ "\"%s%spostgres\" -D \"%s/data\" -F%s "
++ "-c \"log_directory=log\" "
+ "-c \"listen_addresses=%s\" -k \"%s\" "
+ "> \"%s/log/postmaster.log\" 2>&1",
+ bindir ? bindir : "",