rust/tests/ui/cast/unsized-union-ice.rs
2024-03-19 13:57:31 +01:00

15 lines
412 B
Rust

// Regression test for https://github.com/rust-lang/rust/issues/122581
// This used to ICE, because the union was unsized and the pointer casting code
// assumed that non-struct ADTs must be sized.
union Union {
val: std::mem::ManuallyDrop<[u8]>,
//~^ ERROR the size for values of type `[u8]` cannot be known at compilation time
}
fn cast(ptr: *const ()) -> *const Union {
ptr as _
}
fn main() {}