pgbench --partitions=0

Hi,

I noticed that $subject causes an error in HEAD:

$ pgbench -i --partitions=0
pgbench: error: --partitions must be in range 1..2147483647

However, it works in v13 and v14, assuming no partitions.

I think the commit 6f164e6d17 may have unintentionally broken it, by
introducing this hunk:

@@ -6135,12 +6116,9 @@ main(int argc, char **argv)
break;
case 11: /* partitions */
initialization_option_set = true;
- partitions = atoi(optarg);
- if (partitions < 0)
- {
- pg_log_fatal("invalid number of partitions:
\"%s\"", optarg);
+ if (!option_parse_int(optarg, "--partitions", 1, INT_MAX,
+ &partitions))
exit(1);
- }

Attached a patch to fix with a test added. cc'ing Michael who
authored that commit.

--
Thanks, Amit Langote
EDB: http://www.enterprisedb.com