1 files changed, 50 insertions, 0 deletions
diff --git a/tests/mir-opt/building/enum_cast.rs b/tests/mir-opt/building/enum_cast.rs
new file mode 100644
index 00000000000..98fd5acfb14
--- /dev/null
+++ b/tests/mir-opt/building/enum_cast.rs
@@ -0,0 +1,50 @@
+// EMIT_MIR enum_cast.foo.built.after.mir
+// EMIT_MIR enum_cast.bar.built.after.mir
+// EMIT_MIR enum_cast.boo.built.after.mir
+
+enum Foo {
+    A
+}
+
+enum Bar {
+    A, B
+}
+
+#[repr(u8)]
+enum Boo {
+    A, B
+}
+
+fn foo(foo: Foo) -> usize {
+    foo as usize
+}
+
+fn bar(bar: Bar) -> usize {
+    bar as usize
+}
+
+fn boo(boo: Boo) -> usize {
+    boo as usize
+}
+
+// EMIT_MIR enum_cast.droppy.built.after.mir
+enum Droppy {
+    A, B, C
+}
+
+impl Drop for Droppy {
+    fn drop(&mut self) {}
+}
+
+fn droppy() {
+    {
+        let x = Droppy::C;
+        // remove this entire test once `cenum_impl_drop_cast` becomes a hard error
+        #[allow(cenum_impl_drop_cast)]
+        let y = x as usize;
+    }
+    let z = Droppy::B;
+}
+
+fn main() {
+}