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(module
(func $f1 (export "nullref") (param $x nullref) (result i32)
(ref.is_null (local.get $x))
)
(func $f2 (export "anyref") (param $x anyref) (result i32)
(ref.is_null (local.get $x))
)
(func $f3 (export "funcref") (param $x funcref) (result i32)
(ref.is_null (local.get $x))
)
)
(assert_return (invoke "nullref" (ref.null)) (i32.const 1))
(assert_return (invoke "anyref" (ref.null)) (i32.const 1))
(assert_return (invoke "funcref" (ref.null)) (i32.const 1))
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