From: Junio C Hamano <gitster@pobox.com>
To: Christian Couder <christian.couder@gmail.com>
Cc: git@vger.kernel.org, Jeff King <peff@peff.net>,
Ben Peart <Ben.Peart@microsoft.com>,
Jonathan Tan <jonathantanmy@google.com>,
Nguyen Thai Ngoc Duy <pclouds@gmail.com>,
Mike Hommey <mh@glandium.org>,
Lars Schneider <larsxschneider@gmail.com>,
Eric Wong <e@80x24.org>,
Christian Couder <chriscool@tuxfamily.org>
Subject: Re: [PATCH 4/6] t0021/rot13-filter: add packet_initialize()
Date: Sun, 22 Oct 2017 10:12:36 +0900 [thread overview]
Message-ID: <xmqqvaj8dlyz.fsf@gitster.mtv.corp.google.com> (raw)
In-Reply-To: <20171019123030.17338-5-chriscool@tuxfamily.org> (Christian Couder's message of "Thu, 19 Oct 2017 14:30:28 +0200")
Christian Couder <christian.couder@gmail.com> writes:
> +sub packet_initialize {
> + my ($name, $version) = @_;
> +
> + ( packet_txt_read() eq ( 0, $name . "-client" ) ) || die "bad initialize";
> + ( packet_txt_read() eq ( 0, "version=" . $version ) ) || die "bad version";
> + ( packet_bin_read() eq ( 1, "" ) ) || die "bad version end";
This is not a new issue and it is a bit surprising that nobody
noticed when edcc8581 ("convert: add filter.<driver>.process
option", 2016-10-16) was reviewed, but the above is quite broken.
packet_txt_read() returns a 2-element list, and on the right hand
side of "eq" also has a list with (two, elements), but this takes
the last element of the list on each side, and compares them. The
elading 0/1 we see above do not matter, which means we do not require
to see a flush at the end of the version---a simple empty string or
an EOF would do, which is definitely not what we want.
#!/usr/bin/perl
sub p {
my ($res, $buf) = @_;
return ($res, $buf);
}
if (p(0, "") eq (-1, 2, 3, "")) { print "ok\n"; }
It is fine to leave the original code broken at this step while we
purely move the lines around, and hopefully this will be corrected
in a later step in the series (I am responding as I read on, so I do
not yet know at which patch that happens in this series).
Thanks.
next prev parent reply other threads:[~2017-10-22 1:12 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-19 12:30 [PATCH 0/6] Create Git/Packet.pm Christian Couder
2017-10-19 12:30 ` [PATCH 1/6] t0021/rot13-filter: refactor packet reading functions Christian Couder
2017-10-19 22:01 ` Stefan Beller
2017-10-22 0:58 ` Junio C Hamano
2017-11-05 12:50 ` Christian Couder
2017-10-19 12:30 ` [PATCH 2/6] t0021/rot13-filter: improve 'if .. elsif .. else' style Christian Couder
2017-10-19 12:30 ` [PATCH 3/6] t0021/rot13-filter: improve error message Christian Couder
2017-10-19 12:30 ` [PATCH 4/6] t0021/rot13-filter: add packet_initialize() Christian Couder
2017-10-22 1:12 ` Junio C Hamano [this message]
2017-10-27 2:57 ` Junio C Hamano
2017-10-27 5:07 ` Christian Couder
2017-10-28 14:59 ` Lars Schneider
2017-10-29 0:14 ` Junio C Hamano
2017-10-19 12:30 ` [PATCH 5/6] t0021/rot13-filter: add capability functions Christian Couder
2017-10-22 1:46 ` Junio C Hamano
2017-11-04 8:38 ` Christian Couder
2017-11-05 2:03 ` Junio C Hamano
2017-10-19 12:30 ` [PATCH 6/6] Add Git/Packet.pm from parts of t0021/rot13-filter.pl Christian Couder
2017-10-19 22:06 ` Stefan Beller
2017-10-22 2:04 ` [PATCH 0/6] Create Git/Packet.pm Junio C Hamano
2017-10-23 12:26 ` Philip Oakley
2017-10-30 18:08 ` Jeff King
2017-10-25 23:10 ` Johannes Schindelin
2017-10-26 5:38 ` Junio C Hamano
2017-10-26 9:07 ` Jacob Keller
2017-10-26 9:08 ` Bryan Turner
2017-10-26 9:12 ` Bryan Turner
2017-10-27 15:09 ` Johannes Schindelin
2017-10-27 15:05 ` Johannes Schindelin
2017-10-30 0:38 ` Junio C Hamano
2017-10-30 6:18 ` Christian Couder
2017-10-30 12:37 ` Johannes Schindelin
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