RE: Re* [Breakage] 2.20.0-rc0 t1404: test_i18ngrep reports 1 instead of 0 on NonStop in one case

> Jeff King <peff@peff.net> writes:
> 
> > On Mon, Feb 11, 2019 at 01:07:15PM -0800, Junio C Hamano wrote:
> >
> >> >> test_i18ngrep "Unable to create $Q.*packed-refs.lock$Q: File
> >> >> exists" err
> >> >
> >> > The message does not match, does it? Here we grep for "File exists"
> >> > but the message you showed says "File already exists".
> >>
> >> Hmph, this is from strerror(), right?
> >>
> >> The question is if we should be using grep to match on strerror()
> >> result in the C locale.
> >
> > Yeah, I agree that's questionable. And I'm mildly surprised it hasn't
> > been a problem before now.
> >
> >> Do we really care that the reason of the failure is due to EEXIST for
> >> this particular test?
> >
> > Hmm. We care to _some_ degree, since that's the condition we set up
> > for making sure that update-ref cannot take the lock. But it would
> > probably be fine to just confirm that we failed to take the lock. And
> > there, checking for just "Unable to create $Q.*packed-refs.lock" would
> > be sufficient.
> 
> Yup.
> 
> As this came from 6a2a7736 ("t1404: demonstrate two problems with
> reference transactions", 2017-09-08), that is as old as Git 2.15, I'd

> into "not so urgent" pile.
> 
> -- >8 --
> Subject: [PATCH] t1404: do not rely on the exact phrasing of strerror()
> 
> Not even in C locale, it is wrong to expect that the exact phrasing "File
> exists" is used to show EEXIST.
> 
> Reported-by: Randall S. Becker <rsbecker@nexbridge.com>
> Helped-by: Duy Nguyen <pclouds@gmail.com>
> Helped-by: Jeff King <peff@peff.net>
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
> ---
> 
>     I've grepped in t/ directory for the exact phrases of all errno on a
>     recent Debian box, and this was the only hit it found.  There
>     are two other hits but both in the comments.
> 
>  t/t1404-update-ref-errors.sh | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/t/t1404-update-ref-errors.sh b/t/t1404-update-ref-errors.sh

> 51a4f4c0ac..f95a64c911 100755
> --- a/t/t1404-update-ref-errors.sh
> +++ b/t/t1404-update-ref-errors.sh
> @@ -614,7 +614,7 @@ test_expect_success 'delete fails cleanly if packed-
> refs file is locked' '
>  	test_when_finished "rm -f .git/packed-refs.lock" &&
>  	test_must_fail git update-ref -d $prefix/foo >out 2>err &&
>  	git for-each-ref $prefix >actual &&
> -	test_i18ngrep "Unable to create $Q.*packed-refs.lock$Q: File exists"
> err &&
> +	test_i18ngrep "Unable to create $Q.*packed-refs.lock$Q:" err &&
>  	test_cmp unchanged actual
>  '