pgbench -C -M prepared gives an error

Hi,

When trying pgbench with -C -M prepared gives an error (see log below).

It probably doesn't make sense (to have both options together), but
shouldn't it still PREPARE per connection, or exit gracefully / document
this?

robins@pi2:/opt/postgres/master/bin $ ./createdb pgbench
robins@pi2:/opt/postgres/master/bin $ ./pgbench -i pgbench
NOTICE:  table "pgbench_history" does not exist, skipping
NOTICE:  table "pgbench_tellers" does not exist, skipping
NOTICE:  table "pgbench_accounts" does not exist, skipping
NOTICE:  table "pgbench_branches" does not exist, skipping
creating tables...
100000 of 100000 tuples (100%) done (elapsed 0.93 s, remaining 0.00 s)
vacuum...
set primary keys...
done.
robins@pi2:/opt/postgres/master/bin $ ./pgbench -M prepared -C pgbench
starting vacuum...end.
client 0 aborted in state 7: ERROR:  prepared statement "P0_7" does not
exist
transaction type: <builtin: TPC-B (sort of)>
scaling factor: 1
query mode: prepared
number of clients: 1
number of threads: 1
number of transactions per client: 10
number of transactions actually processed: 1/10
latency average: 0.000 ms
tps = 22.399928 (including connections establishing)
tps = 52.598359 (excluding connections establishing)
robins@pi2:/opt/postgres/master/bin $ ./psql -U postgres -c "select
version();"
                                                 version
----------------------------------------------------------------------------------------------------------
 PostgreSQL 9.6devel on armv7l-unknown-linux-gnueabihf, compiled by gcc
(Raspbian 4.9.2-10) 4.9.2, 32-bit
(1 row)


-
robins

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-
robins