tests/ui/lint/lint-ctypes-option-nonnull-unsized.rs


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#![deny(improper_ctypes_definitions)]

extern "C" fn foo<T: ?Sized + 'static>() -> Option<&'static T> {
    //~^ ERROR `extern` fn uses type `Option<&T>`, which is not FFI-safe
    None
}

fn main() {}