tests/ui/issues/issue-47646.rs

   1 use std::collections::BinaryHeap;
   2
   3 fn main() {
   4     let mut heap: BinaryHeap<i32> = BinaryHeap::new();
   5     let borrow = heap.peek_mut();
   6
   7     match (borrow, ()) {
   8         (Some(_), ()) => {
   9             println!("{:?}", heap); //~ ERROR cannot borrow `heap` as immutable
  10         }
  11         _ => {}
  12     };
  13 }