From 631563582c7dfbc274ea6d81c5494e277475b3a3 Mon Sep 17 00:00:00 2001
From: Ondrej Mirtes <ondrej@mirtes.cz>
Date: Sun, 30 Jan 2022 12:58:04 +0100
Subject: [PATCH] Regression test

Closes https://github.com/phpstan/phpstan/issues/4926
---
 ...NonexistentOffsetInArrayDimFetchRuleTest.php |  5 +++++
 tests/PHPStan/Rules/Arrays/data/bug-4926.php    | 17 +++++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 tests/PHPStan/Rules/Arrays/data/bug-4926.php

diff --git a/tests/PHPStan/Rules/Arrays/NonexistentOffsetInArrayDimFetchRuleTest.php b/tests/PHPStan/Rules/Arrays/NonexistentOffsetInArrayDimFetchRuleTest.php
index 1ddbafce4a..55afd44852 100644
--- a/tests/PHPStan/Rules/Arrays/NonexistentOffsetInArrayDimFetchRuleTest.php
+++ b/tests/PHPStan/Rules/Arrays/NonexistentOffsetInArrayDimFetchRuleTest.php
@@ -348,4 +348,9 @@ public function testRuleWithNullsafeVariant(): void
 		]);
 	}
 
+	public function testBug4926(): void
+	{
+		$this->analyse([__DIR__ . '/data/bug-4926.php'], []);
+	}
+
 }
diff --git a/tests/PHPStan/Rules/Arrays/data/bug-4926.php b/tests/PHPStan/Rules/Arrays/data/bug-4926.php
new file mode 100644
index 0000000000..6d5ecb9e8a
--- /dev/null
+++ b/tests/PHPStan/Rules/Arrays/data/bug-4926.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace Bug4926;
+
+/**
+ * @phpstan-type Data array{customer?: array{first_name: string}}
+ */
+class Foo
+{
+	/** @var Data */
+	private array $data = [];
+
+	public function getFirstName(): ?string
+	{
+		return $this->data['customer']['first_name'] ?? null;
+	}
+}