Description
Description
I have the following bug. I think it might by a corner case. It is very hard to narrow down. Please find this reduces example. In my real code many more traits are involved, as are promoted properties, property hooks, etc. I cannot pinpoint the error to a specific version, but Im sure, it worked correctly in PHP 8.3.
trait X {
public function test() {echo 'this is from A';}
}
class A {
use X;
}
class B extends A {
public function test() {echo 'this is from B';}
}
class C extends B {
public function run() {
$this->test(); // this outputs 'this is from A' !!!
}
// however if I include this function, it works correctly by echoing 'this is from B'
// public function test() {
// parent::test();
// }
// whats even more weird, is that an almost identical class D works correctly
}So the call to C->test() skips the inherited B->test() and dispatches to A/X->test().
I ruled out, that
- a rouge "test" function exists, that takes over
- visibility problems with public
- a wrong class is used because of a namespace inaccuracy
Most interesting is, that the pure existence of the called method in C with an explicit call to the parent clears the issue. As this should be redundant, I assume a bug.
Please let me know, if I should provide more details. As it is very difficult to reduce the code to a non-working example, thought, maybe something changed in PHP 8.4 regarding dynamic dispatch which could lead to this behavior.
PHP Version
PHP 8.4
Operating System
macOS 15