diff --git a/tests/ui/dyn-star/issue-104631.rs b/tests/ui/dyn-star/issue-104631.rs
new file mode 100644
index 0000000000000..f5a01df0dae4c
--- /dev/null
+++ b/tests/ui/dyn-star/issue-104631.rs
@@ -0,0 +1,12 @@
+#![feature(dyn_star)]
+#![allow(incomplete_features)]
+
+use std::fmt::Debug;
+
+#[repr(C)]
+#[derive(Debug)]
+struct AlignedUsize(usize);
+
+fn main() {
+    let _x = AlignedUsize(12) as dyn* Debug; //~ ERROR: `AlignedUsize` needs to have the same ABI as a pointer
+}
diff --git a/tests/ui/dyn-star/issue-104631.stderr b/tests/ui/dyn-star/issue-104631.stderr
new file mode 100644
index 0000000000000..89c633d191ea8
--- /dev/null
+++ b/tests/ui/dyn-star/issue-104631.stderr
@@ -0,0 +1,11 @@
+error[E0277]: `AlignedUsize` needs to have the same ABI as a pointer
+  --> $DIR/issue-104631.rs:11:14
+   |
+LL |     let _x = AlignedUsize(12) as dyn* Debug;
+   |              ^^^^^^^^^^^^^^^^ `AlignedUsize` needs to be a pointer-like type
+   |
+   = help: the trait `PointerLike` is not implemented for `AlignedUsize`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.