Bug#203483: marked as done (apt: chokes on a good /var/lib/dpkg/status)
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and subject line Bug#203483: apt: chokes on a good /var/lib/dpkg/status
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Subject: apt: chokes on a good /var/lib/dpkg/status
From: Elizabeth Barham <lizzy@soggytrousers.net>
Date: 30 Jul 2003 06:42:16 -0500
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Package: apt
Version: 0.5.4
Severity: grave
Justification: renders package unusable
Tags: patch
Hi,
apt-get continued to error out stating it could not parse
/var/lib/dpkg/status:
Unable to parse package file /var/lib/dpkg/status (1)
but I went over /var/lib/dpkg/status and could not find anything
amiss. So I checked the source code and noticed that at the
end of the file, the buffer was reset and had zero data in it
which caused Tag.Scan() to return false. (See tagfile.cc:70).
But this is an error because the code should have already
determined it was at the end of the file and *not* call
Tag.Scan() a second time.
*** tagfile.cc~ Mon May 14 00:56:26 2001
--- tagfile.cc Wed Jul 30 05:36:05 2003
*************** bool pkgTagFile::Fill()
*** 112,119 ****
unsigned long Actual;
if (Fd.Read(End,Size - (End - Buffer),&Actual) == false)
return false;
! if (Actual != Size - (End - Buffer))
Done = true;
End += Actual;
/*
if (Left < Size - (End - Buffer))
--- 112,121 ----
unsigned long Actual;
if (Fd.Read(End,Size - (End - Buffer),&Actual) == false)
return false;
! if (Actual != Size - (End - Buffer)) {
Done = true;
+ return false;
+ }
End += Actual;
/*
if (Left < Size - (End - Buffer))
-- System Information
Debian Release: 3.0
Architecture: i386
Kernel: Linux miller 2.2.20-idepci #1 Sat Apr 20 12:45:19 EST 2002 i486
Locale: LANG=C, LC_CTYPE=C
Versions of packages apt depends on:
ii libc6 2.2.5-11.5 GNU C Library: Shared libraries an
ii libstdc++2.10-glibc2.2 1:2.95.4-11woody1 The GNU stdc++ library
---------------------------------------
Received: (at 203483-done) by bugs.debian.org; 30 Jul 2003 19:31:57 +0000
>From mdz@csh.rit.edu Wed Jul 30 14:31:55 2003
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Date: Wed, 30 Jul 2003 15:31:51 -0400
From: Matt Zimmerman <mdz@debian.org>
To: Elizabeth Barham <lizzy@soggytrousers.net>, 203483-done@bugs.debian.org
Subject: Re: Bug#203483: apt: chokes on a good /var/lib/dpkg/status
Message-ID: <20030730193151.GJ21966@alcor.net>
References: <[🔎] 87fzkos0kn.fsf@liliwhite.renaissance.oasis>
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severity 203483 normal
# unfortunately, #139328 is archived...
merge 203483 139328
thanks
On Wed, Jul 30, 2003 at 06:42:16AM -0500, Elizabeth Barham wrote:
> apt-get continued to error out stating it could not parse
> /var/lib/dpkg/status:
>
> Unable to parse package file /var/lib/dpkg/status (1)
>
> but I went over /var/lib/dpkg/status and could not find anything
> amiss. So I checked the source code and noticed that at the
> end of the file, the buffer was reset and had zero data in it
> which caused Tag.Scan() to return false. (See tagfile.cc:70).
> But this is an error because the code should have already
> determined it was at the end of the file and *not* call
> Tag.Scan() a second time.
This is a duplicate of bug #139328, which was fixed in apt 0.5.5. In the
unlikely event that you can still reproduce this bug with the most recent
version, please reopen this bug.
--
- mdz
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