// 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 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. enum Enum<'a> { A(&'a int), B(bool), } fn foo() -> int { let mut n = 42; let mut x = A(&mut n); match x { A(_) if { x = B(false); false } => 1, //~^ ERROR cannot assign in a pattern guard A(_) if { let y = &mut x; *y = B(false); false } => 1, //~^ ERROR cannot mutably borrow in a pattern guard //~^^ ERROR cannot assign in a pattern guard A(p) => *p, B(_) => 2, } } fn main() { foo(); }