1 files changed, 23 insertions, 0 deletions
diff --git a/tests/ui/reify-intrinsic.rs b/tests/ui/reify-intrinsic.rs
new file mode 100644
index 00000000000..9eb2f724017
--- /dev/null
+++ b/tests/ui/reify-intrinsic.rs
@@ -0,0 +1,23 @@
+// check-fail
+
+#![feature(core_intrinsics, intrinsics)]
+
+fn a() {
+    let _: unsafe extern "rust-intrinsic" fn(isize) -> usize = std::mem::transmute;
+    //~^ ERROR cannot coerce
+}
+
+fn b() {
+    let _ = std::mem::transmute as unsafe extern "rust-intrinsic" fn(isize) -> usize;
+    //~^ ERROR casting
+}
+
+fn c() {
+    let _ = [
+        std::intrinsics::likely,
+        std::intrinsics::unlikely,
+        //~^ ERROR cannot coerce
+    ];
+}
+
+fn main() {}