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-rw-r--r--tests/mir-opt/const_prop/cast.rs8
1 files changed, 8 insertions, 0 deletions
diff --git a/tests/mir-opt/const_prop/cast.rs b/tests/mir-opt/const_prop/cast.rs
new file mode 100644
index 000000000..984086eda
--- /dev/null
+++ b/tests/mir-opt/const_prop/cast.rs
@@ -0,0 +1,8 @@
+// unit-test: ConstProp
+// EMIT_MIR cast.main.ConstProp.diff
+
+fn main() {
+ let x = 42u8 as u32;
+
+ let y = 42u32 as u8;
+}