Re: Transform for pl/perl

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От Anthony Bykov
Тема Re: Transform for pl/perl
Дата
Msg-id 20180312110821.29c80420@anthony-24-g082ur
обсуждение исходный текст
Ответ на Re: Transform for pl/perl  (Pavel Stehule <pavel.stehule@gmail.com>)
Ответы Re: Transform for pl/perl  (Pavel Stehule <pavel.stehule@gmail.com>)
Список pgsql-hackers
On Mon, 5 Mar 2018 14:03:37 +0100
Pavel Stehule <pavel.stehule@gmail.com> wrote:

> Hi
>
> I am looking on this patch. I found few issues:
>
> 1. compile warning
>
> I../../src/include  -D_GNU_SOURCE -I/usr/include/libxml2
> -I/usr/lib64/perl5/CORE  -c -o jsonb_plperl.o jsonb_plperl.c
> jsonb_plperl.c: In function ‘SV_FromJsonbValue’:
> jsonb_plperl.c:69:9: warning: ‘result’ may be used uninitialized in
> this function [-Wmaybe-uninitialized]
>   return result;
>          ^~~~~~
> jsonb_plperl.c: In function ‘SV_FromJsonb’:
> jsonb_plperl.c:142:9: warning: ‘result’ may be used uninitialized in
> this function [-Wmaybe-uninitialized]
>   return result;
>          ^~~~~~
>
> 2. bad comment
>
> /*
>  * SV_ToJsonbValue
>  *
>  * Transform Jsonb into SV --- propably reverse direction
>  */
>
>
> /*
>  * HV_ToJsonbValue
>  *
>  * Transform Jsonb into SV
>  */
>
> /*
>  * plperl_to_jsonb(SV *in)
>  *
>  * Transform Jsonb into SV
>  */
>
> 3. Do we need two identical tests fro PLPerl and PLPerlu? Why?
>
> Regards
>
> Pavel

Hello, thanks for reviewing my patch! I really appreciate it.

That warnings are created on purpose - I was trying to prevent the case
when new types are added into pl/perl, but new transform logic was not.
Maybe there is a better way to do it, but right now I'll just add the
"default: pg_unreachable" logic.

About the 3 point - I thought that plperlu and plperl uses different
interpreters. And if they act identically on same examples - there
is no need in identical tests for them indeed.

Point 2 is fixed in this version of the patch.

Please, find in attachments a new version of the patch.

--
Anthony Bykov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company

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