summary refs log tree commit diff
path: root/src/test/compile-fail/issue-17283.rs
blob: a481fec6bf96839cb011e0dcc6f50ab1657ecee1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
// Copyright 2014 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.

// Test that the parser does not attempt to parse struct literals
// within assignments in if expressions.

struct Foo {
    foo: usize
}

fn main() {
    let x = 1;
    let y: Foo;

    // `x { ... }` should not be interpreted as a struct literal here
    if x = x {
        //~^ ERROR mismatched types
        //~| expected `bool`
        //~| found `()`
        //~| expected bool
        //~| found ()
        println!("{}", x);
    }
    // Explicit parentheses on the left should match behavior of above
    if (x = x) {
        //~^ ERROR mismatched types
        //~| expected `bool`
        //~| found `()`
        //~| expected bool
        //~| found ()
        println!("{}", x);
    }
    // The struct literal interpretation is fine with explicit parentheses on the right
    if y = (Foo { foo: x }) {
        //~^ ERROR mismatched types
        //~| expected `bool`
        //~| found `()`
        //~| expected bool
        //~| found ()
        println!("{}", x);
    }
}