added test

Author: staabm

tests/PHPStan/Rules/Variables/DefinedVariableRuleTest.php

@@ -1363,6 +1363,16 @@ public function testBug10657(): void
 		$this->analyse([__DIR__ . '/data/bug-10657.php'], []);
 	}
 
+	public function testBug6830(): void
+	{
+		$this->cliArgumentsVariablesRegistered = true;
+		$this->polluteScopeWithLoopInitialAssignments = false;
+		$this->checkMaybeUndefinedVariables = true;
+		$this->polluteScopeWithAlwaysIterableForeach = true;
+
+		$this->analyse([__DIR__ . '/data/bug-6830.php'], []);
+	}
+
 	public function testBug14117(): void
 	{
 		$this->cliArgumentsVariablesRegistered = true;

tests/PHPStan/Rules/Variables/data/bug-6830.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Bug6830;
+
+/** @param array<bool> $bools */
+function test(array $bools): void
+{
+	foreach ($bools as $bool) {
+		if ($bool) {
+			$foo = 'foo';
+		}
+		if ($bool) {
+			echo $foo;
+		}
+	}
+}