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Added regression test #5494

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Added regression test #5494

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45e5b4a
Added regression test
staabm Apr 18, 2026
465301f
Update bug-5207b.php
staabm Apr 18, 2026
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38 changes: 38 additions & 0 deletions tests/PHPStan/Analyser/nsrt/bug-5207b.php
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Original file line number Diff line number Diff line change
@@ -0,0 +1,38 @@
<?php // lint >= 8.0

declare(strict_types = 1);

namespace Bug5207b;

use function PHPStan\Testing\assertType;

abstract class HelloWorld {
abstract public function getChild(): ?HelloWorld;

public function sayHello(): void {
$foo = null !== $this->getChild()->getChild();
if ($foo) {
assertType('Bug5207b\HelloWorld|null', $this->getChild()); // could be Bug5207b\HelloWorld
assertType('Bug5207b\HelloWorld', $this->getChild()->getChild());
assertType('Bug5207b\HelloWorld|null', $this->getChild()->getChild()->getChild());
}
}

public function sayFoo(): void {
$foo = null !== $this?->getChild()?->getChild();
if ($foo) {
assertType('Bug5207b\HelloWorld', $this->getChild());
assertType('Bug5207b\HelloWorld', $this->getChild()->getChild());
assertType('Bug5207b\HelloWorld|null', $this->getChild()->getChild()->getChild());
}
}

public function sayBar(): void {
$foo = null !== $this?->getChild()->getChild();
if ($foo) {
assertType('Bug5207b\HelloWorld', $this->getChild());
assertType('Bug5207b\HelloWorld', $this->getChild()->getChild());
assertType('Bug5207b\HelloWorld|null', $this->getChild()->getChild()->getChild());
}
}
}
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