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<?php class A { public function c(A $a) {} } class B extends A { public function c(B $a) {} } $b = new B(); $b->c(new B());
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Declaration of B::c(B $a) must be compatible with A::c(A $a) in /in/U2Ahq on line 7
Process exited with code 255.

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