From adc7c78fa2f16d96bf5cfc42b32174953db6d08a Mon Sep 17 00:00:00 2001
From: matz <matz@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 19 Jan 1998 05:22:20 +0000
Subject: *** empty log message ***

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/v1_1r@25 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 io.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/io.c b/io.c
index 369fe9d838..a051ffad38 100644
--- a/io.c
+++ b/io.c
@@ -1001,7 +1001,8 @@ pipe_open(pname, mode)
 	break;
 
       default:			/* parent */
-	{
+	if (pid > 0) rb_sys_fail(0);
+	else {
 	    NEWOBJ(port, struct RFile);
 	    OBJSETUP(port, cIO, T_FILE);
 	    MakeOpenFile(port, fptr);
-- 
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