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From: Edwin Groothuis <edwin@FreeBSD.org>
Date: Mon, 11 Jul 2011 22:01:40 +0000 (UTC)
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Subject: svn commit: r223939 - head/usr.bin/calendar
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Author: edwin
Date: Mon Jul 11 22:01:39 2011
New Revision: 223939
URL: http://svn.freebsd.org/changeset/base/223939

Log:
  Fix run-time breakage when encoutering invalid input-data.
  
  PR:		bin/157718

Modified:
  head/usr.bin/calendar/parsedata.c

Modified: head/usr.bin/calendar/parsedata.c
==============================================================================
--- head/usr.bin/calendar/parsedata.c	Mon Jul 11 20:43:59 2011	(r223938)
+++ head/usr.bin/calendar/parsedata.c	Mon Jul 11 22:01:39 2011	(r223939)
@@ -818,6 +818,8 @@ showflags(int flags)
 static const char *
 getmonthname(int i)
 {
+	if (i <= 0 || i > 12)
+		return ("");
 	if (nmonths[i - 1].len != 0 && nmonths[i - 1].name != NULL)
 		return (nmonths[i - 1].name);
 	return (months[i - 1]);