Parameter with a default value followed by a variadic parameter is also optional

Author: ondrejmirtes

composer.json

@@ -21,7 +21,7 @@
 "nette/utils": "^3.1.1",
 "nikic/php-parser": "^4.5.0",
 "ondram/ci-detector": "^3.1",
-"ondrejmirtes/better-reflection": "^4.3.4",
+"ondrejmirtes/better-reflection": "^4.3.5",
 "phpdocumentor/type-resolver": "1.0.1",
 "phpstan/phpdoc-parser": "^0.4.7",
 "react/child-process": "^0.6.1",

tests/PHPStan/Rules/Methods/CallMethodsRuleTest.php

@@ -1354,4 +1354,12 @@ public function testExplicitMixed(): void
 ]);
 }
 
+public function testBug3409(): void
+{
+$this->checkThisOnly = false;
+$this->checkNullables = true;
+$this->checkUnionTypes = true;
+$this->analyse([__DIR__ . '/data/bug-3409.php'], []);
+}
+
 }

tests/PHPStan/Rules/Methods/data/bug-3409.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Bug3409;
+
+class Foo
+{
+
+public function doFoo()
+{
+$this->doBar();
+}
+
+public function doBar(?callable $callback = null, ...$args): void
+{
+
+}
+
+}