| // Issue 27282: Example 1: This sidesteps the AST checks disallowing |
| // mutable borrows in match guards by hiding the mutable borrow in a |
| // guard behind a move (of the ref mut pattern id) within a closure. |
| // |
| // This example is not rejected by AST borrowck (and then reliably |
| // segfaults when executed). |
| |
| #![feature(nll)] |
| |
| fn main() { |
| match Some(&4) { |
| None => {}, |
| ref mut foo |
| if { (|| { let bar = foo; bar.take() })(); false } => {}, |
| //~^ ERROR cannot move out of `foo` in pattern guard [E0507] |
| Some(s) => std::process::exit(*s), |
| } |
| } |
