tests/ui/unboxed-closures/unboxed-closure-no-cyclic-sig.rs


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// Test that unboxed closures cannot capture their own type.
//
// Also regression test for issue #21410.

fn g<F>(_: F) where F: FnOnce(Option<F>) {}

fn main() {
    g(|_| {  }); //~ ERROR closure/generator type that references itself
}