From 42fa1ebe7d37ba0577f1cfcf5d2449e87187ff62 Mon Sep 17 00:00:00 2001
From: robertl <robertl@f51c46e8-681c-474f-0cfe-069cfd0219fb>
Date: Sun, 6 Apr 2008 04:36:38 +0000
Subject: [PATCH] CSV: if date is before 1/1/1970, don't crash on Windows.

git-svn-id: http://gpsbabel.googlecode.com/svn/trunk@3171 f51c46e8-681c-474f-0cfe-069cfd0219fb
---
 gpsbabel/csv_util.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gpsbabel/csv_util.c b/gpsbabel/csv_util.c
index 14c1e5040..5b662743d 100644
--- a/gpsbabel/csv_util.c
+++ b/gpsbabel/csv_util.c
@@ -848,13 +848,16 @@ static
 int 
 writehms(char * buff, size_t bufsize, const char * format, time_t t, int gmt )
 {
-	static struct tm * stmp;
+	static struct tm no_time = {0};
+	static struct tm * stmp = &no_time;
 
 	if (gmt)
 		stmp = gmtime(&t);
 	else
 		stmp = localtime(&t);
 
+	if (stmp == NULL) stmp = &no_time;
+
 	return snprintf(buff, bufsize, format, 
 		stmp->tm_hour, stmp->tm_min, stmp->tm_sec, 
 		(stmp->tm_hour>=12?"PM":"AM") );
-- 
2.30.2