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<?php class B{} class A { public function abc(): ?B { return new B; } } class C extends A { public function abc() { return new B; } }
Output for git.master_jit, git.master
Fatal error: Declaration of C::abc() must be compatible with A::abc(): ?B in /in/AF3NI on line 15 Stack trace: #0 {main}
Process exited with code 255.

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