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Usenet 1994 October
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usenetsourcesnewsgroupsinfomagicoctober1994disk2.iso
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volume1
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rn
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patch22
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1986-11-30
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Patch #: 22
Priority: MEDIUM
Subject: Patch #14 causes malloc mixups on "rn -c"
>From: dsp@ptsfa.UUCP (David St. Pierre), landauer@drivax.UUCP (Doug Landauer)
Description:
Patch #14 attempted to speed up "rn -c" by using a static buffer
instead of an malloc'ed one. Unfortunately, buried deep down in
a routine called checkexpired there was an unguarded call to free().
This can confuse malloc if there is more than one newsgroup with
expired articles to account for.
Fix: From rn, say "| patch -d DIR", where DIR is your rn source directory.
Outside of rn, say "cd DIR; patch <thisarticle". If you don't have
the patch program, apply the following by hand, or get patch.
If patch indicates that patchlevel is the wrong version, you may need
to apply one or more previous patches, or the patch may already
have been applied. See the patchlevel file to find out what has or
has not been applied. In any event, don't continue with the patch.
Index: patchlevel
Prereq: 21
1c1
< Patch #: 21
---
> Patch #: 22
Index: rcln.c
Prereq: 4.3
*** rcln.c.old Tue Jul 23 17:40:30 1985
--- rcln.c Tue Jul 23 17:40:33 1985
***************
*** 1,4
! /* $Header: rcln.c,v 4.3 85/05/01 11:45:36 lwall Exp $
*
* $Log: rcln.c,v $
* Revision 4.3 85/05/01 11:45:36 lwall
--- 1,4 -----
! /* $Header: rcln.c,v 4.3.1.2 85/07/23 17:39:08 lwall Exp $
*
* $Log: rcln.c,v $
* Revision 4.3.1.2 85/07/23 17:39:08 lwall
***************
*** 1,6
/* $Header: rcln.c,v 4.3 85/05/01 11:45:36 lwall Exp $
*
* $Log: rcln.c,v $
* Revision 4.3 85/05/01 11:45:36 lwall
* Baseline for release with 4.3bsd.
*
--- 1,12 -----
/* $Header: rcln.c,v 4.3.1.2 85/07/23 17:39:08 lwall Exp $
*
* $Log: rcln.c,v $
+ * Revision 4.3.1.2 85/07/23 17:39:08 lwall
+ * Oops, was freeing a static buf on -c in checkexpired.
+ *
+ * Revision 4.3.1.1 85/05/10 11:37:08 lwall
+ * Branch for patches.
+ *
* Revision 4.3 85/05/01 11:45:36 lwall
* Baseline for release with 4.3bsd.
*
***************
*** 426,432
(MEM_SIZE)(rcnums[ngnum] + strlen(newnum) + 1));
}
else {
! free(rcline[ngnum]);
rcline[ngnum] = mbuf;
}
--- 432,439 -----
(MEM_SIZE)(rcnums[ngnum] + strlen(newnum) + 1));
}
else {
! if (!checkflag)
! free(rcline[ngnum]);
rcline[ngnum] = mbuf;
}