1 files changed, 23 insertions, 0 deletions
diff --git a/tests/ui/transmutability/alignment/align-fail.rs b/tests/ui/transmutability/alignment/align-fail.rs
new file mode 100644
index 000000000..7f6090a6e
--- /dev/null
+++ b/tests/ui/transmutability/alignment/align-fail.rs
@@ -0,0 +1,23 @@
+// check-fail
+#![feature(transmutability)]
+
+mod assert {
+    use std::mem::{Assume, BikeshedIntrinsicFrom};
+    pub struct Context;
+
+    pub fn is_maybe_transmutable<Src, Dst>()
+    where
+        Dst: BikeshedIntrinsicFrom<Src, Context, {
+            Assume {
+                alignment: false,
+                lifetimes: true,
+                safety: true,
+                validity: true,
+            }
+        }>
+    {}
+}
+
+fn main() {
+    assert::is_maybe_transmutable::<&'static [u8; 0], &'static [u16; 0]>(); //~ ERROR `&[u8; 0]` cannot be safely transmuted into `&[u16; 0]`
+}