1 files changed, 14 insertions, 0 deletions
diff --git a/tests/ui/mir/enum/with_niche_ptr_ok.rs b/tests/ui/mir/enum/with_niche_ptr_ok.rs
new file mode 100644
index 00000000000..969d955f7a4
--- /dev/null
+++ b/tests/ui/mir/enum/with_niche_ptr_ok.rs
@@ -0,0 +1,14 @@
+//@ run-pass
+//@ compile-flags: -C debug-assertions
+
+fn main() {
+    let _val = unsafe {
+        std::mem::transmute::<*const usize, Option<unsafe extern "C" fn()>>(std::ptr::null())
+    };
+    let _val = unsafe {
+        std::mem::transmute::<*const usize, Option<unsafe extern "C" fn()>>(usize::MAX as *const _)
+    };
+    let _val = unsafe { std::mem::transmute::<usize, Option<unsafe extern "C" fn()>>(0) };
+    let _val = unsafe { std::mem::transmute::<usize, Option<unsafe extern "C" fn()>>(1) };
+    let _val = unsafe { std::mem::transmute::<usize, Option<unsafe extern "C" fn()>>(usize::MAX) };
+}