From 9ccc9cfaf3edbf4ce5be9317f402e5d0b48256fd Mon Sep 17 00:00:00 2001
From: usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 15 Dec 2004 02:06:26 +0000
Subject: * win32/win32.c (rb_w32_fdisset): check whether fd is socket.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@7558 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 win32/win32.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'win32')

diff --git a/win32/win32.c b/win32/win32.c
index 1a859a5a3f..53f8dc9c25 100644
--- a/win32/win32.c
+++ b/win32/win32.c
@@ -1811,7 +1811,10 @@ rb_w32_fdclr(int fd, fd_set *set)
 int
 rb_w32_fdisset(int fd, fd_set *set)
 {
-       return __WSAFDIsSet(TO_SOCKET(fd), set);
+    SOCKET s = TO_SOCKET(fd);
+    if (!is_socket(s))
+        return 0;
+    return __WSAFDIsSet(s, set);
 }
 
 //
-- 
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