From: Jan Maria Matejka <mq@ucw.cz>
Date: Thu, 31 May 2018 09:27:34 +0000 (+0200)
Subject: Filter: Avoid calling interpret() on NULL in IF
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8efb681cdae11f1e2ae0a68c96056a164e204008;p=thirdparty%2Fbird.git

Filter: Avoid calling interpret() on NULL in IF
---

diff --git a/filter/filter.c b/filter/filter.c
index 47fb81e8d..3fa3d34c5 100644
--- a/filter/filter.c
+++ b/filter/filter.c
@@ -900,12 +900,14 @@ interpret(struct f_inst *what)
     break;
   case FI_CONDITION:
     ARG(1, T_BOOL);
-    if (v1.val.i) {
+    if (v1.val.i && what->a2.p) {
       ARG_ANY(2);
-    } else {
+      break;
+    }
+    if ((!v1.val.i) && what->a3.p) {
       ARG_ANY(3);
+      break;
     }
-    break;
   case FI_NOP:
     debug( "No operation\n" );
     break;