<?php
class A {
public function foo($x): B {
return new B;
}
}
class B extends A {
public function foo($x): C {
return new C;
}
}
class C extends B {
}
(new C)->foo('blah');
Fatal error: Could not check compatibility between B::foo($x): C and A::foo($x): B, because class C is not available in /in/4bHiF on line 11
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
Fatal error: Could not check compatibility between B::foo($x): C and A::foo($x): B, because class C is not available in /in/4bHiF on line 11
Process exited with code 255.