From dc9cf9cd6d48ad9c6e25427f958401adc4a913ac Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Fri, 8 Aug 2008 10:36:31 +0000
Subject: updated for version 7.2c-001

---
 src/eval.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'src/eval.c')

diff --git a/src/eval.c b/src/eval.c
index cb548d30dc..5802a08940 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -6231,8 +6231,11 @@ list_extend(l1, l2, bef)
     listitem_T	*bef;
 {
     listitem_T	*item;
+    int		todo = l2->lv_len;
 
-    for (item = l2->lv_first; item != NULL; item = item->li_next)
+    /* We also quit the loop when we have inserted the original item count of
+     * the list, avoid a hang when we extend a list with itself. */
+    for (item = l2->lv_first; item != NULL && --todo >= 0; item = item->li_next)
 	if (list_insert_tv(l1, &item->li_tv, bef) == FAIL)
 	    return FAIL;
     return OK;
-- 
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