1--TEST-- 2Attribute flags value is validated. 3--FILE-- 4<?php 5 6#[Attribute(Foo::BAR)] 7class A1 { } 8 9#[A1] 10class Bar { } 11 12try { 13 var_dump((new ReflectionClass(Bar::class))->getAttributes()[0]->newInstance()); 14} catch (Error $e) { 15 echo $e->getMessage(), "\n"; 16} 17 18?> 19--EXPECT-- 20Class "Foo" not found 21