src/test/ui/consts/const_let_assign3.rs

   1 #![feature(const_fn)]
   2
   3 struct S {
   4     state: u32,
   5 }
   6
   7 impl S {
   8     const fn foo(&mut self, x: u32) {
   9         //~^ ERROR mutable reference
  10         self.state = x;
  11     }
  12 }
  13
  14 const FOO: S = {
  15     let mut s = S { state: 42 };
  16     s.foo(3); //~ ERROR mutable reference
  17     s
  18 };
  19
  20 type Array = [u32; {
  21     let mut x = 2;
  22     let y = &mut x; //~ ERROR mutable reference
  23     *y = 42;
  24     *y
  25 }];
  26
  27 fn main() {
  28     assert_eq!(FOO.state, 3);
  29 }