From: Princeton Ferro <princetonferro@gmail.com>
Date: Tue, 18 Feb 2020 09:39:54 +0000 (+0100)
Subject: vala: Prevent possible stack-overflow in Class.is_subtype_of()
X-Git-Tag: 0.48.0~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e0c35c6df23e26d3fe16da9bd8d6d8a9f04dad51;p=thirdparty%2Fvala.git

vala: Prevent possible stack-overflow in Class.is_subtype_of()
---

diff --git a/vala/valaclass.vala b/vala/valaclass.vala
index d5288a757..586fe287f 100644
--- a/vala/valaclass.vala
+++ b/vala/valaclass.vala
@@ -454,7 +454,8 @@ public class Vala.Class : ObjectTypeSymbol {
 		}
 
 		foreach (DataType base_type in base_types) {
-			if (base_type.type_symbol != null && base_type.type_symbol.is_subtype_of (t)) {
+			if (base_type.type_symbol != null && base_type.type_symbol != this
+			    && base_type.type_symbol.is_subtype_of (t)) {
 				return true;
 			}
 		}