Regression test for #2906

Closes phpstan/phpstan#2906

Author: ondrejmirtes

tests/PHPStan/Analyser/NodeScopeResolverTest.php

@@ -380,6 +380,7 @@ public function dataFileAsserts(): iterable
 
 		yield from $this->gatherAssertTypes(__DIR__ . '/data/type-aliases.php');
 		yield from $this->gatherAssertTypes(__DIR__ . '/data/bug-4650.php');
+		yield from $this->gatherAssertTypes(__DIR__ . '/data/bug-2906.php');
 	}
 
 	/**

tests/PHPStan/Analyser/data/bug-2906.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace Bug2906;
+
+
+use function PHPStan\Testing\assertNativeType;
+use function PHPStan\Testing\assertType;
+
+class HelloWorld
+{
+	/**
+	 * @param string $thing
+	 * @param mixed $value
+	 */
+	public function sayHello($thing, $value): void
+	{
+		assertType('false', $thing === null);
+		assertNativeType('bool', $thing === null);
+	}
+}