src/test/compile-fail/issue-24267-flow-exit.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 // Ensure that we reject code when a nonlocal exit (`break`,
  12 // `continue`) causes us to pop over a needed assignment.
  13
  14 pub fn main() {
  15     foo1();
  16     foo2();
  17 }
  18
  19 pub fn foo1() {
  20     let x: i32;
  21     loop { x = break; }
  22     println!("{}", x); //~ ERROR use of possibly uninitialized variable: `x`
  23 }
  24
  25 pub fn foo2() {
  26     let x: i32;
  27     for _ in 0..10 { x = continue; }
  28     println!("{}", x); //~ ERROR use of possibly uninitialized variable: `x`
  29 }