From e5551befe8caf1eea0e2f01006dfb193667b3af2 Mon Sep 17 00:00:00 2001
From: Mark Johnston <markj@FreeBSD.org>
Date: Tue, 4 Feb 2020 21:14:53 +0000
Subject: [PATCH] libdwarf: Fix a possible memory leak in
 dwarf_add_AT_location_expr().

CID:		1193364
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
---
 contrib/elftoolchain/libdwarf/dwarf_pro_attr.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/contrib/elftoolchain/libdwarf/dwarf_pro_attr.c b/contrib/elftoolchain/libdwarf/dwarf_pro_attr.c
index f46672bba504..6d5fb4d687b2 100644
--- a/contrib/elftoolchain/libdwarf/dwarf_pro_attr.c
+++ b/contrib/elftoolchain/libdwarf/dwarf_pro_attr.c
@@ -46,8 +46,10 @@ dwarf_add_AT_location_expr(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr,
 	at->at_attrib = attr;
 	at->at_expr = loc_expr;
 
-	if (_dwarf_expr_into_block(loc_expr, error) != DW_DLE_NONE)
+	if (_dwarf_expr_into_block(loc_expr, error) != DW_DLE_NONE) {
+		free(at);
 		return (DW_DLV_BADADDR);
+	}
 	at->u[0].u64 = loc_expr->pe_length;
 	at->u[1].u8p = loc_expr->pe_block;
 	if (loc_expr->pe_length <= UCHAR_MAX)