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Add non regression test for 5206 #4183

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Merged
merged 3 commits into from
Sep 7, 2025
Merged

Add non regression test for 5206 #4183

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537db87
Add non regression test
VincentLanglet Jul 28, 2025
ee75c93
Try
VincentLanglet Jul 29, 2025
76e4f25
Fix
VincentLanglet Jul 29, 2025
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13 changes: 13 additions & 0 deletions tests/PHPStan/Rules/Functions/ExistingClassesInArrowFunctionTypehintsRuleTest.php
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Original file line number Diff line number Diff line change
Expand Up @@ -311,4 +311,17 @@ public function testNever(): void
$this->analyse([__DIR__ . '/data/arrow-function-never.php'], $errors);
}

public function testBug5206(): void
{
$errors = [];
if (PHP_VERSION_ID < 80000) {
$errors[] = [
'Parameter $mixed of anonymous function has invalid type Bug5206\mixed.',
9,
];
}

$this->analyse([__DIR__ . '/data/bug-5206.php'], $errors);
}

}
11 changes: 11 additions & 0 deletions tests/PHPStan/Rules/Functions/data/bug-5206.php
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Original file line number Diff line number Diff line change
@@ -0,0 +1,11 @@
<?php declare(strict_types = 1);

namespace Bug5206;

class HelloWorld
{
public function sayHello(): \Closure
{
return fn (mixed $mixed) => '`mixed` type!';
}
}
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