From f681e5867de63f1c8ca692023cf86e4c884fdae7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Cl=C3=A9ment=20Chigot?= <clement.chigot@atos.net>
Date: Thu, 29 Jul 2021 13:14:47 +0200
Subject: [PATCH] gas: ensure XCOFF DWARF subsection are initialized to 0

debug_abbrev doesn't use end_exp to compute its size. However, it must
be NULL. Otherwise, ppc_xcoff_end might try to access uninitialized
memory.

gas/
	* config/tc-ppc.c (ppc_dwsect): Use XCNEW instead of XNEW when creating
	a new subsection.
---
 gas/config/tc-ppc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gas/config/tc-ppc.c b/gas/config/tc-ppc.c
index 8c3b0a8e7cc..1327eabf98d 100644
--- a/gas/config/tc-ppc.c
+++ b/gas/config/tc-ppc.c
@@ -4723,7 +4723,7 @@ ppc_dwsect (int ignore ATTRIBUTE_UNUSED)
   else
     {
       /* Create a new dw subsection.  */
-      subseg = XNEW (struct dw_subsection);
+      subseg = XCNEW (struct dw_subsection);
 
       if (opt_label == NULL)
         {
-- 
2.33.0