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--TEST--
Test that there can be no side-effect when a readonly property modification fails
--FILE--
<?php
class Foo {
public function __construct(
public readonly string $bar
) {}
public function write() {
$this->bar = new S();
}
}
class S {
public function __toString() {
var_dump("Side-effect in __toString()");
return "";
}
}
$foo = new Foo("");
try {
$foo->write();
} catch (Error $e) {
echo $e->getMessage() . "\n";
}
?>
--EXPECT--
Cannot modify readonly property Foo::$bar
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