From: Tom Lane <tgl@sss.pgh.pa.us>
To: Michael Paquier <michael@paquier.xyz>
Cc: Thomas Munro <thomas.munro@enterprisedb.com>
Cc: Alvaro Herrera <alvherre@2ndquadrant.com>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Subject: Re: Allowing printf("%m") only where it actually works
Date: Tue, 25 Sep 2018 09:30:26 -0400
Message-ID: <4418.1537882226@sss.pgh.pa.us> (raw)
In-Reply-To: <20180925071636.GK1354@paquier.xyz>
References: <8770.1533931511@sss.pgh.pa.us>
<16896.1533935042@sss.pgh.pa.us>
<14925.1534040609@sss.pgh.pa.us>
<1437.1534100930@sss.pgh.pa.us>
<13183.1534624490@sss.pgh.pa.us>
<30022.1534705920@sss.pgh.pa.us>
<20180912070739.GK25160@paquier.xyz>
<1304.1536774001@sss.pgh.pa.us>
<20180914020256.GD29332@paquier.xyz>
<13585.1537809527@sss.pgh.pa.us>
<20180925071636.GK1354@paquier.xyz>
Michael Paquier <michael@paquier.xyz> writes:
> On Mon, Sep 24, 2018 at 01:18:47PM -0400, Tom Lane wrote:
>> Well, we have to change the code somehow to make it usable in frontend
>> as well as backend. And we can *not* have it do exit(1) in libpq.
>> So the solution I chose was to make it act the same as if FormatMessage
>> were to fail. I don't find this behavior unreasonable: what is really
>> important is the original error code, not whether we were able to
>> pretty-print it. I think the ereport(FATAL) coding is a pretty darn
>> bad idea even in the backend.
> Ok. I won't fight hard on that. Why changing the error message from
> "could not load netmsg.dll" to "unrecognized winsock error" then? The
> original error string is much more verbose to grab the context.
As the code stands, what you'll get told about is the error code
returned by the failed LoadLibrary call; the original winsock error
code is reported nowhere. I think that's backwards.
We could possibly write something like
sprintf(wserrbuf, "winsock error %d (could not load netmsg.dll to translate: error code %lu)", err, GetLastError())));
but I'm unconvinced that that's useful.
regards, tom lane
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To: pgsql-hackers@postgresql.org
Cc: tgl@sss.pgh.pa.us, michael@paquier.xyz, thomas.munro@enterprisedb.com, alvherre@2ndquadrant.com, pgsql-hackers@lists.postgresql.org
Subject: Re: Allowing printf("%m") only where it actually works
In-Reply-To: <4418.1537882226@sss.pgh.pa.us>
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