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#![feature(unsized_tuple_coercion)]
#![feature(unboxed_closures)]
#![feature(unsized_fn_params)]
fn bad() -> extern "rust-call" fn(([u8],)) { todo!() }
fn main() {
let f = bad();
let slice: Box<([u8],)> = Box::new(([1; 8],));
f(*slice);
//~^ ERROR the size for values of type `[u8]` cannot be known at compilation time
}
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