src/test/ui/consts/partial_qualif.rs

   1 use std::cell::Cell;
   2
   3 const FOO: &(Cell<usize>, bool) = {
   4     let mut a = (Cell::new(0), false);
   5     a.1 = true; // sets `qualif(a)` to `qualif(a) | qualif(true)`
   6     &{a} //~ ERROR cannot refer to interior mutable
   7 };
   8
   9 fn main() {}