1 files changed, 33 insertions, 0 deletions
diff --git a/tests/mir-opt/early_otherwise_branch_68867.rs b/tests/mir-opt/early_otherwise_branch_68867.rs
new file mode 100644
index 000000000..a6a56f3a9
--- /dev/null
+++ b/tests/mir-opt/early_otherwise_branch_68867.rs
@@ -0,0 +1,33 @@
+// unit-test: EarlyOtherwiseBranch
+
+// FIXME: This test was broken by the derefer change.
+
+// example from #68867
+type CSSFloat = f32;
+
+pub enum ViewportPercentageLength {
+    Vw(CSSFloat),
+    Vh(CSSFloat),
+    Vmin(CSSFloat),
+    Vmax(CSSFloat),
+}
+
+// EMIT_MIR early_otherwise_branch_68867.try_sum.EarlyOtherwiseBranch.diff
+#[no_mangle]
+pub extern "C" fn try_sum(
+    x: &ViewportPercentageLength,
+    other: &ViewportPercentageLength,
+) -> Result<ViewportPercentageLength, ()> {
+    use self::ViewportPercentageLength::*;
+    Ok(match (x, other) {
+        (&Vw(one), &Vw(other)) => Vw(one + other),
+        (&Vh(one), &Vh(other)) => Vh(one + other),
+        (&Vmin(one), &Vmin(other)) => Vmin(one + other),
+        (&Vmax(one), &Vmax(other)) => Vmax(one + other),
+        _ => return Err(()),
+    })
+}
+
+fn main() {
+    try_sum(&ViewportPercentageLength::Vw(1.0), &ViewportPercentageLength::Vw(2.0));
+}