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Date: Tue, 30 Jun 2015 09:20:09 -0700
Message-ID: <CABbL6oZe6JJ=w_CPbGZA203OqJD67FjSkDtLyQx2UnkqCacJdw@mail.gmail.com>
Subject: [alpine-devel] Re: xzdiff in xz package is broken on alpine linux
From: Michael Fox <415fox@gmail.com>
To: Lasse Collin <lasse.collin@tukaani.org>
Cc: alpine-devel <alpine-devel@lists.alpinelinux.org>, ncopa@alpinelinux.org
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I have to admit the xzdiff script is a little beyond me but the way xzdiff
fails is you compare two different files and it just returns 0 as if they
were the same. I think the easiest way to see it is to download  an alpine
linux live CD:

http://alpinelinux.org/downloads/

To make it run in a VM takes just a few minutes. Here is complete steps to
make it simple as possible:

In virtualbox create a new VM, Type: Linux, Version: Linux 2.6 (64 bit);
Memory 4096; Do not add a virtual hard drive; Start, select the alpine iso;

Login: root
setup-interfaces (enter, enter, enter)
ifup eth0
setup-dns (enter, enter)
setup-apkrepos (enter)
apk add alpine-sdk
wget http://tukaani.org/xz/xz-5.2.1.tar.gz
tar xf xz-5.2.1.tar.gz
cd xz-5.2.1
./configure
make && make check


On Tue, Jun 30, 2015 at 8:38 AM, Lasse Collin <lasse.collin@tukaani.org>
wrote:

> On 2015-06-29 Michael Fox wrote:
> > > I found this by running make check. It's probably due to xzdiff
> > > being a shell script with some hair regexs and musl having some
> > > regex incompatibilities in the name of standards compliance.
>
> Thanks. It wouldn't be a surprise if xzdiff (or xzgrep) has a bug. A
> little more information would be useful to find out what exactly is
> causing a problem. :-) I already checked for \+ or + in regexes and
> there are none in xzdiff or xzgrep.
>
> --
> Lasse Collin  |  IRC: Larhzu @ IRCnet & Freenode
>



-- 

-
Michael

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<div dir=3D"ltr"><div><div><div><div>I have to admit the xzdiff script is a=
 little beyond me but the way xzdiff fails is you compare two different fil=
es and it just returns 0 as if they were the same. I think the easiest way =
to see it is to download=C2=A0 an alpine linux live CD:<br><br><a href=3D"h=
ttp://alpinelinux.org/downloads/">http://alpinelinux.org/downloads/</a><br>=
<br></div>To make it run in a VM takes just a few minutes. Here is complete=
 steps to make it simple as possible:<br><br></div>In virtualbox create a n=
ew VM, Type: Linux, Version: Linux 2.6 (64 bit); Memory 4096; Do not add a =
virtual hard drive; Start, select the alpine iso;<br><br></div>Login: root<=
br></div><div>setup-interfaces (enter, enter, enter)<br></div><div>ifup eth=
0<br></div><div>setup-dns (enter, enter)<br></div><div>setup-apkrepos (ente=
r)<br></div><div>apk add alpine-sdk<br></div><div>wget <a href=3D"http://tu=
kaani.org/xz/xz-5.2.1.tar.gz">http://tukaani.org/xz/xz-5.2.1.tar.gz</a><br>=
</div><div>tar xf xz-5.2.1.tar.gz<br></div><div>cd xz-5.2.1<br></div><div>.=
/configure<br></div><div>make &amp;&amp; make check<br><br></div></div><div=
 class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Tue, Jun 30, 2015 =
at 8:38 AM, Lasse Collin <span dir=3D"ltr">&lt;<a href=3D"mailto:lasse.coll=
in@tukaani.org" target=3D"_blank">lasse.collin@tukaani.org</a>&gt;</span> w=
rote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;borde=
r-left:1px #ccc solid;padding-left:1ex"><span class=3D"">On 2015-06-29 Mich=
ael Fox wrote:<br>
&gt; &gt; I found this by running make check. It&#39;s probably due to xzdi=
ff<br>
&gt; &gt; being a shell script with some hair regexs and musl having some<b=
r>
&gt; &gt; regex incompatibilities in the name of standards compliance.<br>
<br>
</span>Thanks. It wouldn&#39;t be a surprise if xzdiff (or xzgrep) has a bu=
g. A<br>
little more information would be useful to find out what exactly is<br>
causing a problem. :-) I already checked for \+ or + in regexes and<br>
there are none in xzdiff or xzgrep.<br>
<span class=3D"HOEnZb"><font color=3D"#888888"><br>
--<br>
Lasse Collin=C2=A0 |=C2=A0 IRC: Larhzu @ IRCnet &amp; Freenode<br>
</font></span></blockquote></div><br><br clear=3D"all"><br>-- <br><div clas=
s=3D"gmail_signature"><br>-<br>Michael</div>
</div>

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