1 files changed, 17 insertions, 0 deletions
diff --git a/src/test/ui/intrinsics/intrinsic-unreachable.rs b/src/test/ui/intrinsics/intrinsic-unreachable.rs
new file mode 100644
index 000000000..da1a32d58
--- /dev/null
+++ b/src/test/ui/intrinsics/intrinsic-unreachable.rs
@@ -0,0 +1,17 @@
+// run-pass
+#![feature(core_intrinsics)]
+
+use std::intrinsics;
+
+// See also src/test/run-make/intrinsic-unreachable.
+
+unsafe fn f(x: usize) -> usize {
+    match x {
+        17 => 23,
+        _ => intrinsics::unreachable(),
+    }
+}
+
+fn main() {
+    assert_eq!(unsafe { f(17) }, 23);
+}