From b62fc310ca2be79b9fd660554779ca6ee0010a5f Mon Sep 17 00:00:00 2001
From: jsg <jsg@openbsd.org>
Date: Sun, 24 Sep 2017 09:14:25 +0000
Subject: Handle parse_base() returning NULL for DW_TAG_base_type to avoid
 attemping to insert a NULL iterator leading to a NULL deref crash. Found with
 afl.  ok mpi@

---
 usr.bin/ctfconv/parse.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'usr.bin/ctfconv/parse.c')

diff --git a/usr.bin/ctfconv/parse.c b/usr.bin/ctfconv/parse.c
index 655b69fd729..ee49031f26c 100644
--- a/usr.bin/ctfconv/parse.c
+++ b/usr.bin/ctfconv/parse.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: parse.c,v 1.6 2017/09/24 08:44:14 jsg Exp $ */
+/*	$OpenBSD: parse.c,v 1.7 2017/09/24 09:14:25 jsg Exp $ */
 
 /*
  * Copyright (c) 2016-2017 Martin Pieuchot
@@ -606,6 +606,8 @@ cu_parse(struct dwcu *dcu, struct itype_queue *cutq, struct ioff_tree *cuot)
 			break;
 		case DW_TAG_base_type:
 			it = parse_base(die, psz);
+			if (it == NULL)
+				continue;
 			break;
 		case DW_TAG_const_type:
 			it = parse_refers(die, psz, CTF_K_CONST);
-- 
cgit v1.2.3-59-g8ed1b