2006-12-20  Jim Meyering  <jim at meyering.net>

	"cut -f 2- A B" no longer triggers a double-free bug

	* src/cut.c (cut_fields): Set file-scoped global to NULL after

	freeing it.  This avoids a double-free (and core dump on some systems)

	for this usage: "echo 1>a; echo 2>b; cut -f2- a b".

	Reported by James Hunt in <http://bugzilla.redhat.com/220312>.

--- coreutils-5.97/src/cut.c.orig	2007-01-10 14:49:53 +0000

+++ coreutils-5.97/src/cut.c	2007-01-10 14:58:59 +0000

@@ -743,6 +743,7 @@

 	  if (len < 0)

 	    {

 	      free (field_1_buffer);

+	      field_1_buffer = NULL;

 	      if (ferror (stream) || feof (stream))

 		break;

 	      xalloc_die ();