error[E0381]: binding `*w` isn't initialized
  --> $DIR/borrowck-use-in-index-lvalue.rs:3:5
   |
LL |     let w: &mut [isize];
   |         - variable declared here
LL |     w[5] = 0;
   |     ^^^^ `*w` used here but it isn't initialized

error[E0381]: binding `*w` isn't initialized
  --> $DIR/borrowck-use-in-index-lvalue.rs:6:5
   |
LL |     let mut w: &mut [isize];
   |         ----- variable declared here
LL |     w[5] = 0;
   |     ^^^^ `*w` used here but it isn't initialized

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0381`.