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Date: Sat, 07 Jan 2017 09:31:47 -0700
From: <writeonce@...ipix.org>
To: musl@...ts.openwall.com
Subject: RE: bug in getopt_long()


> 
> 
> -------- Original Message --------
> Subject: RE: [musl] bug in getopt_long()
> From: <writeonce@...ipix.org>
> Date: Sat, January 07, 2017 8:13 am
> To: musl@...ts.openwall.com
> 
> 
> > 
> > 
> > -------- Original Message --------
> > Subject: [musl] bug in getopt_long()
> > From: "Anthony G. Basile" <basile@...eharbor.net>
> > Date: Thu, January 05, 2017 9:00 am
> > To: musl@...ts.openwall.com
> > 
> > Hi,
> > 
> > We hit a bug in Gentoo with getopt_long(). It appears the alpine people
> > hit it too http://bugs.alpinelinux.org/issues/4802. The problem was
> > encountered in open-iscsi but I got some reduced code which I've
> > attached. If you build and run that code as `./test --portal
> > 10.144.0.14 --discover` then you get
> > 
> > p
> > D
> > unrecognized character 'D'
> > 
> > On a glibc system, you don't get the "unrecognized character 'D'" which
> > is what we'd expect. Rich suggested a patch to musl which looked like
> > it might work, but it didn't. I didn't investigate further. I'm just
> > reporting it first to see if others know what's up.
> >
> 
> The attached patch should work, I believe; tested with both of the
> following:
> 
> ./a.out --portal 10.144.0.14 --discover
> ./a.out --portal 10.144.0.14 --discover -- foo bar

Behavior after my original patch deviated from glibc in the following
case:

./a.out -a -b -c -d -e --discover

The attached updated patch should do the trick for all three cases.

midipix

> 
> midipix
> 
>  
> > 
> > -- 
> > Anthony G. Basile, Ph.D.
> > Gentoo Linux Developer [Hardened]
> > E-Mail : basile@...eharbor.net
> > GnuPG FP : 1FED FAD9 D82C 52A5 3BAB DC79 9384 FA6E F52D 4BBA
> > GnuPG ID : F52D4BBA
> >


View attachment "getopt_long_v2.patch" of type "text/x-diff" (1275 bytes)

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