[src/trunk]: src/bin/sh Fix from FreeBSD (applied there in July 2008...)

[kre <kre%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/ee01542fbe36
branches:  trunk
changeset: 824800:ee01542fbe36
user:      kre <kre%NetBSD.org@localhost>
date:      Mon Jun 19 02:51:51 2017 +0000

description:
Fix from FreeBSD (applied there in July 2008...)

Don't dump core with input like sh -c 'x=; echo >&$x' - that is where
the word after a >& or <& redirect expands to nothing at all.

diffstat:

 bin/sh/eval.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r 199b8d01f5fb -r ee01542fbe36 bin/sh/eval.c
--- a/bin/sh/eval.c     Mon Jun 19 02:49:33 2017 +0000
+++ b/bin/sh/eval.c     Mon Jun 19 02:51:51 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: eval.c,v 1.148 2017/06/17 11:53:24 kre Exp $   */
+/*     $NetBSD: eval.c,v 1.149 2017/06/19 02:51:51 kre Exp $   */
 
 /*-
  * Copyright (c) 1993
@@ -37,7 +37,7 @@
 #if 0
 static char sccsid[] = "@(#)eval.c     8.9 (Berkeley) 6/8/95";
 #else
-__RCSID("$NetBSD: eval.c,v 1.148 2017/06/17 11:53:24 kre Exp $");
+__RCSID("$NetBSD: eval.c,v 1.149 2017/06/19 02:51:51 kre Exp $");
 #endif
 #endif /* not lint */
 
@@ -546,7 +546,7 @@
                case NFROMFD:
                case NTOFD:
                        if (redir->ndup.vname) {
-                               expandarg(redir->ndup.vname, &fn, EXP_FULL | EXP_TILDE);
+                               expandarg(redir->ndup.vname, &fn, EXP_TILDE | EXP_REDIR);
                                fixredir(redir, fn.list->text, 1);
                        }
                        break;