Add another regression test

Author: herndlm

tests/PHPStan/Rules/Functions/CallToFunctionParametersRuleTest.php

@@ -1950,6 +1950,15 @@ public function testBug12051(): void
 		$this->analyse([__DIR__ . '/data/bug-12051.php'], []);
 	}
 
+	public function testBug8046(): void
+	{
+		if (PHP_VERSION_ID < 80100) {
+			$this->markTestSkipped('Test requires PHP 8.1.');
+		}
+
+		$this->analyse([__DIR__ . '/data/bug-8046.php'], []);
+	}
+
 	public function testBug11418(): void
 	{
 		if (PHP_VERSION_ID < 80100) {

tests/PHPStan/Rules/Functions/data/bug-8046.php

@@ -0,0 +1,11 @@
+<?php declare(strict_types = 1);
+
+namespace Bug8046;
+
+function add(int $a, int $b): int {
+	return $a + $b;
+}
+
+$args = ['a' => 7];
+
+var_dump(add(...$args, b: 8));