From a46876c214ff10e1d11d1bd28727bc16765cf3f8 Mon Sep 17 00:00:00 2001
From: law <law@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Thu, 16 Apr 1998 16:48:43 +0000
Subject: [PATCH] 8         * search.c (my_tree_cons): Don't clear words
 outside the         newly allocated node.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@19238 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/cp/search.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gcc/cp/search.c b/gcc/cp/search.c
index 488220a..4438372 100644
--- a/gcc/cp/search.c
+++ b/gcc/cp/search.c
@@ -260,7 +260,10 @@ my_tree_cons (purpose, value, chain)
   tree p = (tree)obstack_alloc (&type_obstack_entries, sizeof (struct tree_list));
   ++my_tree_node_counter;
   TREE_TYPE (p) = NULL_TREE;
-  ((HOST_WIDE_INT *)p)[3] = 0;
+  /* The type of the last on the LHS of this statement must be a pointer
+     to the same type as the bitfields in struct tree_common.  Otherwise
+     we may write beyond our intended area.  */
+  ((unsigned *)p)[3] = 0;
   TREE_SET_CODE (p, TREE_LIST);
   TREE_PURPOSE (p) = purpose;
   TREE_VALUE (p) = value;
-- 
2.7.4