From: | Michael Paquier <michael(at)paquier(dot)xyz> |
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To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | Michael Meskes <meskes(at)postgresql(dot)org>, pgsql-hackers(at)lists(dot)postgresql(dot)org, Bruce Momjian <bruce(at)momjian(dot)us> |
Subject: | Re: [PATCH] ecpg: fix progname memory leak |
Date: | 2020-10-09 00:19:50 |
Message-ID: | 20201009001950.GB1528@paquier.xyz |
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Lists: | pgsql-hackers |
On Thu, Oct 08, 2020 at 01:17:25PM -0400, Tom Lane wrote:
> Agreed. In theory there might be some point in removing leaks that happen
> per-statement, so as to avoid unreasonable memory bloat when processing an
> extremely long input file. In practice nobody has complained about that,
> and if somebody did I'd probably question the sanity of putting so much
> code into one file. (The C compiler would likely bloat even more while
> processing the output...) Moreover, given the way the ecpg grammar works,
> it'd be really painful to avoid all such leaks, and it might well
> introduce bugs not fix them.
I got to wonder about that, and I don't quite see how to make all the
memory handling clean without having at least a concept of
per-statement memory context to make any cleanup easy once a statement
is done. That's a lot of infrastructure for a case nobody really
complained about, indeed..
> In any case, if this TODO item is going to lead to ideas as dubious
> as "let's free progname before exiting", it's not helpful.
+1. Agreed to just remove it.
--
Michael
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