Create bug-14083.php

Author: staabm

tests/PHPStan/Analyser/nsrt/bug-14083.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Bug14083;
+
+use function PHPStan\Testing\assertType;
+
+/**
+ * @param list<string> $convert
+ */
+function example(array $convert): void {
+	foreach ($convert as &$item) {
+		$item = strtoupper($item);
+	}
+	assertType('list<string>', $convert);
+}
+
+/**
+ * @param list<string> $convert
+ */
+function example2(array $convert): void {
+	foreach ($convert as $key => $item) {
+		$convert[$key] = strtoupper($item);
+	}
+	assertType('list<uppercase-string>', $convert);
+}