Re: Is this a bug in pg_current_logfile() on Windows?

On 7/8/20 5:26 PM, Tom Lane wrote:
>
> However ... I put in a test case to try to expose this failure, and
> our Windows buildfarm critters remain perfectly happy. So what's up
> with that? After some digging around, I believe the reason is that
> PostgresNode::psql is stripping the \r from pg_current_logfile()'s
> result, here:
>
> $$stdout =~ s/\r//g if $TestLib::windows_os;
>
> I'm slightly tempted to extend the test case by verifying on the
> server side that the result ends in ".log" with no extra characters.
> More generally, I wonder if the above behavior is really a good idea.
> It seems to have been added in commit 33f3bbc6d as a hack to avoid
> having to think too hard about mingw's behavior, but now I wonder if
> it isn't masking other bugs too. At the very least I think we ought
> to tighten the coding to
>
> $$stdout =~ s/\r\n/\n/g if $TestLib::windows_os;
>
> so that it won't strip carriage returns at random.
>

Seems reasonable. If we rip it out completely we'll have to find all the
places it breaks and fix them. And we'll almost certainly get new
breakage. If it's hiding a real bug we'll have to do that, but I'd be
reluctant unless there's actual proof.

cheers

andrew

--
Andrew Dunstan https://www.2ndQuadrant.com
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