add regression test

Author: canvural

tests/PHPStan/Rules/Comparison/IfConstantConditionRuleTest.php

@@ -194,4 +194,11 @@ public function testBug13384b(): void
 		]);
 	}
 
+	#[RequiresPhp('>= 7.3')]
+	public function testBug8270(): void
+	{
+		$this->treatPhpDocTypesAsCertain = true;
+		$this->analyse([__DIR__ . '/data/bug-8270.php'], []);
+	}
+
 }

tests/PHPStan/Rules/Comparison/data/bug-8270.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace Bug8270;
+
+$list = [];
+
+for ($i = 0; $i < 10; $i++) {
+	$list[] = [
+		'test' => false,
+		'value' => rand(),
+	];
+}
+
+// TODO: sort list by value asc...
+$k = array_key_first($list);
+$list[$k]['test'] = true; // <--- assign only first item!
+
+foreach ($list as $item) {
+	if ($item['test']) {
+		echo $item['value'];
+	}
+}
+