rust/src/test/compile-fail/issue-18819.rs
Esteban Küber 1020e3036b Show types of all args when missing args
When there're missing arguments in a function call, present a list of
all the expected types:

```rust
fn main() {
    t("");
}

fn t(a: &str, x: String) {}
```

```bash
% rustc file.rs
file.rs:3:5: 2:8 error: this function takes 2 parameters but 0
parameters were supplied [E0061]
file.rs:3     t();
              ^~~
file.rs:3:5: 2:8 help: run `rustc --explain E0061` to see a detailed explanation
file.rs:3:5: 2:8 note: the following parameter types were expected: &str, std::string::String
error: aborting due to previous error
```

Fixes #33649
2016-06-15 18:40:11 -07:00

29 lines
809 B
Rust

// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
trait Foo {
type Item;
}
struct X;
impl Foo for X {
type Item = bool;
}
fn print_x(_: &Foo<Item=bool>, extra: &str) {
println!("{}", extra);
}
fn main() {
print_x(X); //~error this function takes 2 parameters but 1 parameter was supplied
//~^ NOTE the following parameter types were expected: &Foo<Item=bool>, &str
}