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<?php abstract class Foo{ abstract function xxx(stdClass $a); } trait BarTrick{ abstract function xxx($a): stdClass; } abstract class Bar extends Foo{ use BarTrick; } class Baz extends Bar{ function xxx($a): stdClass{} }
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Declaration of Foo::xxx(stdClass $a) must be compatible with BarTrick::xxx($a): stdClass in /in/iX31H on line 4
Process exited with code 255.

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