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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Pavel Stehule <pavel.stehule@gmail.com>
Cc: jian he <jian.universality@gmail.com>
Cc: Christoph Berg <myon@debian.org>
Cc: Michael Banck <mbanck@gmx.net>
Cc: Tommy Pavlicek <tommypav122@gmail.com>
Cc: Dagfinn Ilmari Mannsåker <ilmari@ilmari.org>
Cc: pgsql-hackers@lists.postgresql.org
Subject: Re: Better error reporting from extension scripts (Was: Extend ALTER OPERATOR)
Date: Sun, 13 Oct 2024 13:13:51 -0400
Message-ID: <3482022.1728839631@sss.pgh.pa.us> (raw)
In-Reply-To: <CAFj8pRALVX8XDY9uZz_JCqd8k5VQjMLk3eGc=STonhMvJoLCSw@mail.gmail.com>
References: <CAEhP-W_1bMTLan2LtzS+xr=b-Wep56gw+OoirABQ8b2aOw+5yg@mail.gmail.com>
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	<CAFj8pRALVX8XDY9uZz_JCqd8k5VQjMLk3eGc=STonhMvJoLCSw@mail.gmail.com>

Pavel Stehule <pavel.stehule@gmail.com> writes:
> so 12. 10. 2024 v 9:33 odesílatel jian he <jian.universality@gmail.com>
> napsal:
>> + /*
>> + * If we have a location (which, as said above, we really always should)
>> + * then report a line number to aid in localizing problems in big scripts.
>> + */
>> + if (location >= 0)
>> so this part will always be true?

> yes, after  CleanQuerytext the location should not be -1 ever

Right, but we might not have entered either of those previous
if-blocks.  The question here is whether the raw parser (gram.y)
ever throws an error that doesn't include a cursor position.  IMO it
shouldn't, but a quick look through gram.y finds a few ereports that
lack parser_errposition.  We could go fix those, and probably should,
but imagining that none will ever be introduced again seems like
folly.

			regards, tom lane





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