File: no-patterns-in-args.rs

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rustc 1.86.0%2Bdfsg1-1
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extern "C" {
    fn f1(mut arg: u8); //~ ERROR patterns aren't allowed in foreign function declarations
    fn f2(&arg: u8); //~ ERROR patterns aren't allowed in foreign function declarations
    fn f3(arg @ _: u8); //~ ERROR patterns aren't allowed in foreign function declarations
    fn g1(arg: u8); // OK
    fn g2(_: u8); // OK
// fn g3(u8); // Not yet
}

type A1 = fn(mut arg: u8); //~ ERROR patterns aren't allowed in function pointer types
type A2 = fn(&arg: u8); //~ ERROR patterns aren't allowed in function pointer types
type B1 = fn(arg: u8); // OK
type B2 = fn(_: u8); // OK
type B3 = fn(u8); // OK

fn main() {}