From a20ecd51fed72e2991e98b63af3a69edd0ad1434 Mon Sep 17 00:00:00 2001
From: Raymond Hill <rhill@raymondhill.net>
Date: Mon, 10 Apr 2023 15:13:03 -0400
Subject: [PATCH] Properly detect incorrect usage of CSS combinators

Related discussion:
- https://www.reddit.com/r/uBlockOrigin/comments/12fquk4/ublock_is_on_but_im_still_getting_ads_on_this/jfpkz1g/
---
 src/js/static-filtering-parser.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/js/static-filtering-parser.js b/src/js/static-filtering-parser.js
index 6cd960096..91aa41a3c 100644
--- a/src/js/static-filtering-parser.js
+++ b/src/js/static-filtering-parser.js
@@ -2968,6 +2968,7 @@ class ExtSelectorCompiler {
         if ( parts === undefined ) { return; }
         if ( this.astHasType(parts, 'Error') ) { return; }
         if ( this.astHasType(parts, 'Selector') === false ) { return; }
+        if ( this.astIsValidSelectorList(parts) === false ) { return; }
         if (
             this.astHasType(parts, 'ProceduralSelector') === false &&
             this.astHasType(parts, 'ActionSelector') === false