2011/2/1 Tom Lane <tgl@sss.pgh.pa.us>:
> Hitoshi Harada <umi.tanuki@gmail.com> writes:
>> Finally I concluded the concern Itagaki-san raised can be solved by
>> adding code that restores client_encoding in copy_in_error_callback.
>
> It might happen to work today (or at least in the scenarios you tested),
> but it seems fragile as can be.
Although I thought its fragile-ness was acceptable to avoid making the
patch too complex, I agree with you.
The third patch is attached, modifying mb routines so that they can
receive conversion procedures as FmgrInof * and save the function
pointer in CopyState.
I tested it with encoding option and could not see performance slowdown.
Regards,
--
Hitoshi Harada