1 files changed, 7 insertions, 0 deletions
diff --git a/tests/mir-opt/dataflow-const-prop/cast.rs b/tests/mir-opt/dataflow-const-prop/cast.rs
new file mode 100644
index 000000000..484403f7f
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/cast.rs
@@ -0,0 +1,7 @@
+// unit-test: DataflowConstProp
+
+// EMIT_MIR cast.main.DataflowConstProp.diff
+fn main() {
+    let a = 257;
+    let b = a as u8 + 1;
+}