regression test

Author: staabm

tests/PHPStan/Rules/Variables/DefinedVariableRuleTest.php

@@ -1353,6 +1353,16 @@ public function testBug5477(): void
 		$this->analyse([__DIR__ . '/data/bug-5477.php'], []);
 	}
 
+	public function testBug10657(): void
+	{
+		$this->cliArgumentsVariablesRegistered = true;
+		$this->polluteScopeWithLoopInitialAssignments = false;
+		$this->checkMaybeUndefinedVariables = true;
+		$this->polluteScopeWithAlwaysIterableForeach = true;
+
+		$this->analyse([__DIR__ . '/data/bug-10657.php'], []);
+	}
+
 	public function testBug14117(): void
 	{
 		$this->cliArgumentsVariablesRegistered = true;

tests/PHPStan/Rules/Variables/data/bug-10657.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Bug10657;
+
+class HelloWorld
+{
+	public function sayHello(bool $flag): void
+	{
+		for ($i = 0; $i < 10; $i++) {
+			if ($flag) {
+				$foo = 'bar';
+			}
+			if ($flag) {
+				echo $foo;
+			}
+		}
+	}
+}