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<?php const DEFAULT_VALUE = null; function foo(\stdClass $arg = DEFAULT_VALUE) { var_dump($arg); } var_dump((new ReflectionFunction('foo'))->getParameters()[0]->allowsNull()); foo(null);
Output for git.master, git.master_jit, rfc.property-hooks
bool(false) Fatal error: Uncaught TypeError: foo(): Argument #1 ($arg) must be of type stdClass, null given, called in /in/mUePZ on line 11 and defined in /in/mUePZ:5 Stack trace: #0 /in/mUePZ(11): foo(NULL) #1 {main} thrown in /in/mUePZ on line 5
Process exited with code 255.

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