From 3bd735314dd2d59a1f4b5c48c06cda77453a31a6 Mon Sep 17 00:00:00 2001
From: usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 23 Sep 2008 10:50:42 +0000
Subject: [PATCH] 	* win32/win32.c (subtruct): check tv_sec.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@19486 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog     | 4 ++++
 win32/win32.c | 3 +++
 2 files changed, 7 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 62948e94d2..c3e0d37fa5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Sep 23 19:50:24 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* win32/win32.c (subtruct): check tv_sec.
+
 Tue Sep 23 19:30:41 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* win32/win32.c (filetime_to_timeval): new function, split from
diff --git a/win32/win32.c b/win32/win32.c
index 6bd5a0694e..98cb7bb6bc 100644
--- a/win32/win32.c
+++ b/win32/win32.c
@@ -2172,6 +2172,9 @@ do_select(int nfds, fd_set *rd, fd_set *wr, fd_set *ex,
 static inline int
 subtract(struct timeval *rest, const struct timeval *wait)
 {
+    if (rest->tv_sec < wait->tv_sec) {
+	return 0;
+    }
     while (rest->tv_usec < wait->tv_usec) {
 	if (rest->tv_sec <= wait->tv_sec) {
 	    return 0;