ReflectionMethod with invokeArgs: Dead catch - exception is never thrown in the try block. #7719
Description
Bug report
When calling a method dynamically based on a name and a variable, it is not safe to check whether an exception will be thrown or not. Therefore, PhpStan cannot report the error that an exception will never be thrown, because it is not true.
Code snippet that reproduces the problem
https://phpstan.org/r/3a219790-5e24-4d7e-b245-cc9e9dbc510d
<?php declare(strict_types = 1);
class HelloWorld
{
public function sayHello(Endpoint $endpoint, string $methodName): void
{
try {
$methodResponse = (new \ReflectionMethod($endpoint, $methodName))->invokeArgs($endpoint, ['id' => 2]);
} catch (\RuntimeException $e) { // Dead catch - RuntimeException is never thrown in the try block.
echo $e->getMessage();
die;
}
var_dump($methodResponse);
}
}
class Endpoint {
public function run(int $id): int {
return $id;
}
}Expected output
No error for ReflectionMethod with invokeArgs.