src/test/ui/packed/issue-46152.rs

   1 // run-pass
   2 #![allow(dead_code)]
   3 #![allow(unused_variables)]
   4 #![feature(unsize, coerce_unsized)]
   5
   6 #[repr(packed)]
   7 struct UnalignedPtr<'a, T: ?Sized>
   8     where T: 'a,
   9 {
  10     data: &'a T,
  11 }
  12
  13 fn main() {
  14
  15     impl<'a, T, U> std::ops::CoerceUnsized<UnalignedPtr<'a, U>> for UnalignedPtr<'a, T>
  16         where
  17         T: std::marker::Unsize<U> + ?Sized,
  18         U: ?Sized,
  19     { }
  20
  21     let arr = [1, 2, 3];
  22     let arr_unaligned: UnalignedPtr<[i32; 3]> = UnalignedPtr { data: &arr };
  23     let arr_unaligned: UnalignedPtr<[i32]> = arr_unaligned;
  24 }