From a61e4d44bda1baaba8df502f812ade5c05c23c62 Mon Sep 17 00:00:00 2001
From: Johan Danielsson <joda@pdc.kth.se>
Date: Tue, 21 Sep 2004 15:47:37 +0000
Subject: [PATCH] (krb5_format_time): check return value from localtime and
 strftime

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@14248 ec53bebd-3082-4978-b11e-865c3cabbd6b
---
 lib/krb5/time.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/krb5/time.c b/lib/krb5/time.c
index fff3f3950..8056be092 100644
--- a/lib/krb5/time.c
+++ b/lib/krb5/time.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997-2003 Kungliga Tekniska Högskolan
+ * Copyright (c) 1997-2004 Kungliga Tekniska Högskolan
  * (Royal Institute of Technology, Stockholm, Sweden). 
  * All rights reserved. 
  *
@@ -99,7 +99,9 @@ krb5_format_time(krb5_context context, time_t t,
 	tm = gmtime (&t);
     else
 	tm = localtime(&t);
-    strftime(s, len, include_time ? context->time_fmt : context->date_fmt, tm);
+    if(tm == NULL ||
+       strftime(s, len, include_time ? context->time_fmt : context->date_fmt, tm) == 0)
+	snprintf(s, len, "%ld", (long)t);
     return 0;
 }