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struct S<A, B>(Option<(A, B)>);
impl<A, B> S<A, B> {
fn infer(&self, a: A, b: B) {}
//~^ NOTE method defined here
//~| NOTE
//~| NOTE
}
fn main() {
let s = S(None);
s.infer(0i32);
//~^ ERROR this method takes 2 arguments but 1 argument was supplied
//~| NOTE this argument has type `i32`...
//~| NOTE ... which causes `s` to have type `S<i32, _>`
//~| NOTE argument #2 is missing
//~| HELP provide the argument
//~| HELP change the type of the numeric literal from `i32` to `u32`
let t: S<u32, _> = s;
//~^ ERROR mismatched types
//~| NOTE expected `S<u32, _>`, found `S<i32, _>`
//~| NOTE expected due to this
//~| NOTE expected struct `S<u32, _>`
}
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