Fatal error: class and trait define the same constant in the composition of child class in case constant in trait is equal to constant in child class

Description

The following code:

<?php
trait T {
    public const a = C2::b;
}
class C1 {
    use T;
    const b = 1;
}
class C2 extends C1  {
    use T;
    const b = 2;
}
echo C1::a;
echo C2::a;

Resulted in this output:

Fatal error: C1 and T define the same constant (a) in the composition of C2. However, the definition differs and is considered incompatible. Class was composed in /in/riAnX on line 9

But I expected this output instead:

22

It's not clear to me why this code is incorrect, but at the same time, the following works:

<?php
trait T {
    public const a = self::b;
}
class C1 {
    use T;
    const b = 1;
}
class C2 extends C1  {
    use T;
    const b = 2;
}
echo C1::a;
echo C2::a;

and outputs

11

PHP Version

8.2

Operating System

No response

No se nombra ningún archivo fuente ni ninguna prueba. Empieza ejecutando el reproducer proporcionado para PHP 8.2 y compara la constante del trait usando C2::b con la variante self::b; sigue la composición de constantes de traits y clases para establecer la regla prevista. Se considera terminado cuando el primer ejemplo sigue el comportamiento previsto de resolución de constantes sin producir un error fatal incorrecto, con cobertura de regresión.