src/test/ui/nll/mir_check_cast_unsafe_fn.rs

   1 #![allow(dead_code)]
   2
   3 fn bar<'a>(input: &'a u32, f: fn(&'a u32) -> &'a u32) -> &'static u32 {
   4     // Here the NLL checker must relate the types in `f` to the types
   5     // in `g`. These are related via the `UnsafeFnPointer` cast.
   6     let g: unsafe fn(_) -> _ = f;
   7     unsafe { g(input) }
   8     //~^ ERROR lifetime may not live long enough
   9 }
  10
  11 fn main() {}