From: | "David E(dot) Wheeler" <david(at)justatheory(dot)com> |
---|---|
To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Andrew Dunstan <andrew(at)dunslane(dot)net>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: PL/Perl Does not Like vstrings |
Date: | 2012-01-05 17:28:47 |
Message-ID: | 6E866333-1A67-4639-B744-9C423DD8EAB0@justatheory.com |
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Thread: | |
Lists: | pgsql-hackers |
On Jan 5, 2012, at 7:34 AM, Tom Lane wrote:
>> That still crashes, but doesn't if we use sv_mortalcopy unconditionally.
>
> Unconditional sv_mortalcopy sounds like the thing to do then, but a
> comment would help. And if this isn't a Perl bug, I would like to
> know what is.
Question: Is this an issue anywhere else in PL/Perl, or just elog()? What about SPI parameters or return values?
david=# DO LANGUAGE PLPERL $$
david$# my $plan = spi_prepare('SELECT $1', 'TEXT');
david$# spi_query_prepared($plan, $^V);
david$# spi_freeplan($plan);
david$# return;
david$# $$;
ERROR: cannot convert Perl hash to non-composite type text at line 3.
CONTEXT: PL/Perl anonymous code block
No segfault, at least, though that’s a rather bizarre error message. AFAIK, $^V isn’t a hash. This works, though:
DO LANGUAGE PLPERL $$
my $plan = spi_prepare('SELECT $1', 'TEXT');
spi_query_prepared($plan, v1);
spi_freeplan($plan);
return;
$$;
DO
Best,
David
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