src/test/ui/nll/issue-27868.rs

   1 // Regression test for issue #27868
   2
   3 #![feature(nll)]
   4
   5 use std::ops::AddAssign;
   6
   7 struct MyVec<T>(Vec<T>);
   8
   9 impl <T> Drop for MyVec<T> {
  10     fn drop(&mut self) {
  11         println!("Being dropped.");
  12     }
  13 }
  14
  15 impl<T> AddAssign<T> for MyVec<T> {
  16     fn add_assign(&mut self, _elem: T) {
  17         println!("In add_assign.");
  18     }
  19 }
  20
  21 fn main() {
  22     let mut vec = MyVec(vec![0]);
  23     let mut vecvec = vec![vec];
  24
  25     vecvec[0] += {
  26         vecvec = vec![];
  27         //~^ ERROR cannot assign to `vecvec` because it is borrowed [E0506]
  28         0
  29     };
  30 }