1 files changed, 14 insertions, 0 deletions
diff --git a/src/test/ui/enum-discriminant/issue-43398.rs b/src/test/ui/enum-discriminant/issue-43398.rs
new file mode 100644
index 000000000..581db033f
--- /dev/null
+++ b/src/test/ui/enum-discriminant/issue-43398.rs
@@ -0,0 +1,14 @@
+// run-pass
+
+#![feature(core_intrinsics)]
+#![feature(repr128)]
+//~^ WARN the feature `repr128` is incomplete
+
+#[repr(i128)]
+enum Big { A, B }
+
+fn main() {
+    println!("{} {:?}",
+        std::intrinsics::discriminant_value(&Big::A),
+        std::mem::discriminant(&Big::B));
+}