1 files changed, 21 insertions, 0 deletions
diff --git a/tests/ui/consts/const_fn_unsize.rs b/tests/ui/consts/const_fn_unsize.rs
new file mode 100644
index 000000000..01da57320
--- /dev/null
+++ b/tests/ui/consts/const_fn_unsize.rs
@@ -0,0 +1,21 @@
+// run-pass
+#![feature(slice_ptr_len)]
+
+use std::ptr::NonNull;
+
+#[allow(unused)]
+const fn test() {
+    let _x = NonNull::<[i32; 0]>::dangling() as NonNull<[i32]>;
+}
+
+// Regression test for #75118.
+pub const fn dangling_slice<T>() -> NonNull<[T]> {
+    NonNull::<[T; 1]>::dangling()
+}
+
+const C: NonNull<[i32]> = dangling_slice();
+
+fn main() {
+    assert_eq!(C.as_ptr(), NonNull::<[i32; 1]>::dangling().as_ptr() as *mut _);
+    assert_eq!(C.as_ptr().len(), 1);
+}