From: Denis Vlasenko <vda.linux@googlemail.com>
Date: Mon, 16 Oct 2006 01:33:16 +0000 (-0000)
Subject: ash: fix segfault in ash.
X-Git-Tag: 1_4_0~502
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=5f03158f66dc2c73b052307f3871c4341fbabb8e;p=oweals%2Fbusybox.git

ash: fix segfault in ash.
patch by walter harms <wharms@bfs.de>
---

diff --git a/shell/ash.c b/shell/ash.c
index 1260d5e9a..a34c871f1 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -3042,6 +3042,7 @@ expredir(union node *n)
 
 	for (redir = n ; redir ; redir = redir->nfile.next) {
 		struct arglist fn;
+		memset(&fn, 0, sizeof(struct arglist));
 		fn.lastp = &fn.list;
 		switch (redir->type) {
 		case NFROMTO:
@@ -3056,7 +3057,10 @@ expredir(union node *n)
 		case NTOFD:
 			if (redir->ndup.vname) {
 				expandarg(redir->ndup.vname, &fn, EXP_FULL | EXP_TILDE);
-				fixredir(redir, fn.list->text, 1);
+				if (fn.list != NULL)
+					fixredir(redir, fn.list->text, 1);
+				else
+					sh_error("redir error");
 			}
 			break;
 		}