From 039f12b5bb7bec277706f76183a91632c3f1105c Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 14 Oct 2011 03:14:00 +0000
Subject: * ext/pty/pty.c (pty_check): should return nil until the child  
 terminates or stops.  [ruby-dev:44600] [Bug #2642]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33468 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ext/pty/pty.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'ext/pty/pty.c')

diff --git a/ext/pty/pty.c b/ext/pty/pty.c
index 3797972975..b18eb68f77 100644
--- a/ext/pty/pty.c
+++ b/ext/pty/pty.c
@@ -658,7 +658,7 @@ pty_check(int argc, VALUE *argv, VALUE self)
 
     rb_scan_args(argc, argv, "11", &pid, &exc);
     cpid = rb_waitpid(NUM2PIDT(pid), &status, WNOHANG|WUNTRACED);
-    if (cpid == -1) return Qnil;
+    if (cpid == -1 || cpid == 0) return Qnil;
 
     if (!RTEST(exc)) return rb_last_status_get();
     raise_from_check(cpid, status);
-- 
cgit v1.2.3