diff options
Diffstat (limited to 'tests/ui/rfcs/rfc-1789-as-cell/from-mut.rs')
-rw-r--r-- | tests/ui/rfcs/rfc-1789-as-cell/from-mut.rs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/tests/ui/rfcs/rfc-1789-as-cell/from-mut.rs b/tests/ui/rfcs/rfc-1789-as-cell/from-mut.rs new file mode 100644 index 000000000..329fadb15 --- /dev/null +++ b/tests/ui/rfcs/rfc-1789-as-cell/from-mut.rs @@ -0,0 +1,20 @@ +// run-pass + +#![feature(as_array_of_cells)] + +use std::cell::Cell; + +fn main() { + let slice: &mut [i32] = &mut [1, 2, 3]; + let cell_slice: &Cell<[i32]> = Cell::from_mut(slice); + let slice_cell: &[Cell<i32>] = cell_slice.as_slice_of_cells(); + + assert_eq!(slice_cell.len(), 3); + + let mut array: [i32; 3] = [1, 2, 3]; + let cell_array: &Cell<[i32; 3]> = Cell::from_mut(&mut array); + let array_cell: &[Cell<i32>; 3] = cell_array.as_array_of_cells(); + + array_cell[0].set(99); + assert_eq!(array, [99, 2, 3]); +} |