From 3c51c13a95cb007cdbefcc2dc91e048f381bc08e Mon Sep 17 00:00:00 2001
From: Fabien Potencier <fabien@potencier.org>
Date: Tue, 22 Oct 2024 12:19:15 +0200
Subject: [PATCH] Fix merge

---
 src/Node/ImportNode.php | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Node/ImportNode.php b/src/Node/ImportNode.php
index a184b24e4..4916c6441 100644
--- a/src/Node/ImportNode.php
+++ b/src/Node/ImportNode.php
@@ -13,6 +13,7 @@ namespace Twig\Node;
 
 use Twig\Attribute\YieldReady;
 use Twig\Compiler;
+use Twig\Error\SyntaxError;
 use Twig\Node\Expression\AbstractExpression;
 use Twig\Node\Expression\NameExpression;
 
@@ -26,6 +27,11 @@ class ImportNode extends Node
 {
     public function __construct(AbstractExpression $expr, string $var, int $lineno, bool $global = true)
     {
+        // All names supported by ExpressionParser::parsePrimaryExpression() should be excluded
+        if (\in_array(strtolower($var), ['true', 'false', 'none', 'null'])) {
+            throw new SyntaxError(\sprintf('You cannot assign a value to "%s".', $var), $lineno);
+        }
+
         parent::__construct(['expr' => $expr], ['global' => $global, 'var' => $var], $lineno);
     }