Add regression test for no-effect array_map() with pure closure variable

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: phpstan-bot

tests/PHPStan/Rules/Functions/CallToFunctionStatementWithoutSideEffectsRuleTest.php

@@ -121,6 +121,16 @@ public function testBug11101(): void
 		]);
 	}
 
+	public function testBug11101ClosureVariable(): void
+	{
+		$this->analyse([__DIR__ . '/data/bug-11101-closure-variable.php'], [
+			[
+				'Call to function array_map() on a separate line has no effect.',
+				17,
+			],
+		]);
+	}
+
 	#[RequiresPhp('>= 8.4.0')]
 	public function testBug11101Php84(): void
 	{

tests/PHPStan/Rules/Functions/data/bug-11101-closure-variable.php

@@ -0,0 +1,20 @@
+<?php declare(strict_types = 1);
+
+namespace Bug11101ClosureVariable;
+
+class Foo
+{
+
+	/** @param list<string> $args */
+	public function test(array $args): void
+	{
+		$pureFx = static function (string $v): void {};
+
+		assert(isset($args[0]));
+
+		$pureFx($args[0]);
+
+		array_map($pureFx, $args);
+	}
+
+}