From 74eeb719fd85a4649c6e9816c99b04e543be5f28 Mon Sep 17 00:00:00 2001
From: Martin Cracauer <cracauer@FreeBSD.org>
Date: Fri, 5 Nov 1999 12:06:30 +0000
Subject: [PATCH] When a backquote command inside a here-document had a pipe
 with more than two processes (got that? :-), the stdin fd of the middle
 processes that has just been set up was accidetially closed. Don't do this.

PR:		bin/14527
---
 bin/sh/eval.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/bin/sh/eval.c b/bin/sh/eval.c
index a3c8fcd2e1e6..701f018fda8b 100644
--- a/bin/sh/eval.c
+++ b/bin/sh/eval.c
@@ -499,7 +499,8 @@ evalpipe(n)
 				close(prevfd);
 			}
 			if (pip[1] >= 0) {
-				close(pip[0]);
+				if (!prevfd > 0)
+					close(pip[0]);
 				if (pip[1] != 1) {
 					close(1);
 					copyfd(pip[1], 1);