// Copyright 2012 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 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. fn foo(x: isize) { println!("{}", x); } fn main() { let x: isize; if 1 > 2 { x = 10; } foo(x); //~ ERROR use of possibly uninitialized variable: `x` }