Add support for casting enum-like tags to scalar values.

1 files changed, 12 insertions, 0 deletions

diff --git a/src/test/compile-fail/tag-variant-cast-non-nullary.rs b/src/test/compile-fail/tag-variant-cast-non-nullary.rs
new file mode 100644
index 00000000000..ecc518e75a1
--- /dev/null
+++ b/src/test/compile-fail/tag-variant-cast-non-nullary.rs
@@ -0,0 +1,12 @@
+//error-pattern: non-scalar cast
+// black and white have the same discriminator value ...
+
+tag non_nullary {
+    nullary;
+    other(int);
+}
+
+fn main() {
+    let v = nullary;
+    let val = v as int;
+}