From 9ded807a20a48d4482d21bea8cb4cc24f20f04bc Mon Sep 17 00:00:00 2001
From: Hartmut Holzgraefe <hholzgra@php.net>
Date: Wed, 14 Jun 2000 22:11:10 +0000
Subject: [PATCH] return FALSE from strftime on negative timestamp values they
 do not make sense anyway and seem to crash win2k

---
 ext/standard/datetime.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ext/standard/datetime.c b/ext/standard/datetime.c
index 30f0aa7778..d3da443f9b 100644
--- a/ext/standard/datetime.c
+++ b/ext/standard/datetime.c
@@ -664,6 +664,9 @@ void _php_strftime(INTERNAL_FUNCTION_PARAMETERS, int gm)
 	if ((*format_arg)->value.str.len==0) {
 		RETURN_FALSE;
 	}
+	if (timestamp < 0) {
+		RETURN_FALSE;
+	}
 	format = (*format_arg)->value.str.val;
 	if (gm) {
 		ta = php_gmtime_r(&timestamp, &tmbuf);
-- 
2.50.1