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// Copyright 2012-2014 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 immutable pattern bindings cannot be reassigned.
#![feature(slice_patterns)]
enum E {
Foo(isize)
}
struct S {
bar: isize,
}
pub fn main() {
match 1 {
x => {
x += 1; //~ ERROR re-assignment of immutable variable `x`
}
}
match E::Foo(1) {
E::Foo(x) => {
x += 1; //~ ERROR re-assignment of immutable variable `x`
}
}
match (S { bar: 1 }) {
S { bar: x } => {
x += 1; //~ ERROR re-assignment of immutable variable `x`
}
}
match (1,) {
(x,) => {
x += 1; //~ ERROR re-assignment of immutable variable `x`
}
}
match [1,2,3] {
[x,_,_] => {
x += 1; //~ ERROR re-assignment of immutable variable `x`
}
}
}
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