Catch localtime() failure for additional safety;

patch from Jan Stary <hans at stare dot cz> some time ago.

diff --git a/usr.bin/mandoc/mandoc.c b/usr.bin/mandoc/mandoc.c
index 45793f1..16c4f02 100644 (file)
--- a/usr.bin/mandoc/mandoc.c
+++ b/usr.bin/mandoc/mandoc.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: mandoc.c,v 1.56 2014/11/28 19:25:03 schwarze Exp $ */
+/*     $OpenBSD: mandoc.c,v 1.57 2014/12/15 17:29:58 schwarze Exp $ */
 /*
  * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2011, 2012, 2013, 2014 Ingo Schwarze <schwarze@openbsd.org>
@@ -475,6 +475,8 @@ time2a(time_t t)
        int              isz;
 
        tm = localtime(&t);
+       if (tm == NULL)
+               return(NULL);
 
        /*
         * Reserve space: