src/test/ui/borrowck/borrowck-match-already-borrowed.rs

   1 // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 // revisions: ast mir
  12 //[mir]compile-flags: -Z borrowck=mir
  13
  14 enum Foo {
  15     A(i32),
  16     B
  17 }
  18
  19 fn match_enum() {
  20     let mut foo = Foo::B;
  21     let p = &mut foo;
  22     let _ = match foo {
  23         Foo::B => 1, //[mir]~ ERROR [E0503]
  24         _ => 2,
  25         Foo::A(x) => x //[ast]~ ERROR [E0503]
  26                        //[mir]~^ ERROR [E0503]
  27     };
  28     drop(p);
  29 }
  30
  31
  32 fn main() {
  33     let mut x = 1;
  34     let r = &mut x;
  35     let _ = match x {
  36         x => x + 1, //[ast]~ ERROR [E0503]
  37                     //[mir]~^ ERROR [E0503]
  38         y => y + 2, //[ast]~ ERROR [E0503]
  39                     //[mir]~^ ERROR [E0503]
  40     };
  41     drop(r);
  42 }