From 07f7a1b34b6caef7da014f30f87599d2df3be5d2 Mon Sep 17 00:00:00 2001
From: "github-actions[bot]"
 <41898282+github-actions[bot]@users.noreply.github.com>
Date: Sat, 28 Feb 2026 15:59:18 +0000
Subject: [PATCH] Fix false match.unhandled on array with multiple booleans

- Fixed TypeCombinator::remove() to handle removal of types with multiple finite types
- Previously only removed types with exactly 1 finite type, now handles any count
- This caused match expressions with array conditions and multi-condition arms to not narrow types properly
- New regression test in tests/PHPStan/Rules/Comparison/data/bug-13029.php

Closes https://github.com/phpstan/phpstan/issues/13029
---
 src/Type/TypeCombinator.php                   |  8 +++++---
 .../Comparison/MatchExpressionRuleTest.php    |  6 ++++++
 .../Rules/Comparison/data/bug-13029.php       | 19 +++++++++++++++++++
 3 files changed, 30 insertions(+), 3 deletions(-)
 create mode 100644 tests/PHPStan/Rules/Comparison/data/bug-13029.php

diff --git a/src/Type/TypeCombinator.php b/src/Type/TypeCombinator.php
index aa5f933532..522c587fbd 100644
--- a/src/Type/TypeCombinator.php
+++ b/src/Type/TypeCombinator.php
@@ -90,11 +90,13 @@ public static function remove(Type $fromType, Type $typeToRemove): Type
 		$fromFiniteTypes = $fromType->getFiniteTypes();
 		if (count($fromFiniteTypes) > 0) {
 			$finiteTypesToRemove = $typeToRemove->getFiniteTypes();
-			if (count($finiteTypesToRemove) === 1) {
+			if (count($finiteTypesToRemove) > 0) {
 				$result = [];
 				foreach ($fromFiniteTypes as $finiteType) {
-					if ($finiteType->equals($finiteTypesToRemove[0])) {
-						continue;
+					foreach ($finiteTypesToRemove as $finiteTypeToRemove) {
+						if ($finiteType->equals($finiteTypeToRemove)) {
+							continue 2;
+						}
 					}
 
 					$result[] = $finiteType;
diff --git a/tests/PHPStan/Rules/Comparison/MatchExpressionRuleTest.php b/tests/PHPStan/Rules/Comparison/MatchExpressionRuleTest.php
index e92bd57639..617c4fd0d0 100644
--- a/tests/PHPStan/Rules/Comparison/MatchExpressionRuleTest.php
+++ b/tests/PHPStan/Rules/Comparison/MatchExpressionRuleTest.php
@@ -446,6 +446,12 @@ public function testBug9534(): void
 		]);
 	}
 
+	#[RequiresPhp('>= 8.0')]
+	public function testBug13029(): void
+	{
+		$this->analyse([__DIR__ . '/data/bug-13029.php'], []);
+	}
+
 	#[RequiresPhp('>= 8.0')]
 	public function testBug11310(): void
 	{
diff --git a/tests/PHPStan/Rules/Comparison/data/bug-13029.php b/tests/PHPStan/Rules/Comparison/data/bug-13029.php
new file mode 100644
index 0000000000..37520c0832
--- /dev/null
+++ b/tests/PHPStan/Rules/Comparison/data/bug-13029.php
@@ -0,0 +1,19 @@
+<?php // lint >= 8.0
+
+declare(strict_types = 1);
+
+namespace Bug13029;
+
+function foo(): void
+{
+	/** @var bool **/
+	$bool1 = true;
+	/** @var bool **/
+	$bool2 = false;
+
+	$x = match([$bool1, $bool2]) {
+		[true, false], [true, true] => 1,
+		[false, false] => 0,
+		[false, true] => -1,
+	};
+}