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fsort(): don't call append() with zero nelem 

This fixes the 'sort -f /dev/null' coredump reported on current-users.
This commit is contained in:
jdolecek 2001-02-20 18:33:09 +00:00
parent 013971b69b
commit 9c52662e24
1 changed files with 4 additions and 3 deletions
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7
usr.bin/sort/fsort.c
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@ -1,4 +1,4 @@
/* $NetBSD: fsort.c,v 1.16 2001/02/19 20:50:17 jdolecek Exp $ */
/* $NetBSD: fsort.c,v 1.17 2001/02/20 18:33:09 jdolecek Exp $ */
/*-
* Copyright (c) 1993
@ -47,7 +47,7 @@
#include "fsort.h"
#ifndef lint
__RCSID("$NetBSD: fsort.c,v 1.16 2001/02/19 20:50:17 jdolecek Exp $");
__RCSID("$NetBSD: fsort.c,v 1.17 2001/02/20 18:33:09 jdolecek Exp $");
__SCCSID("@(#)fsort.c 8.1 (Berkeley) 6/6/93");
#endif /* not lint */
@ -211,7 +211,8 @@ fsort(binno, depth, top, filelist, nfiles, outfp, ftbl)
? sradixsort(keylist, nelem, weights, REC_D)
: radixsort(keylist, nelem, weights, REC_D) ))
err(2, NULL);
append(keylist, nelem, depth, outfp, putline, ftbl);
if (nelem > 0)
append(keylist, nelem, depth, outfp, putline, ftbl);
break; /* pop */
}
if (panic >= PANIC) {