diff --git a/src/20046.rs b/src/20046.rs
new file mode 100644
index 00000000..35af3260
--- /dev/null
+++ b/src/20046.rs
@@ -0,0 +1,15 @@
+#[derive(PartialEq)]
+enum IoErrorKind { BrokenPipe, XXX }
+struct IoError {
+    pub kind: IoErrorKind,
+    pub detail: Option<String>
+}
+fn main() {
+    let e: Result<u8, _> = Err(IoError{ kind: IoErrorKind::XXX, detail: None });
+    match e {
+        Ok(_) => true,
+        Err(ref e) if e.kind == IoErrorKind::BrokenPipe => return,
+        Err(IoError { kind: IoErrorKind::BrokenPipe, ..}) => return,
+        Err(err) => panic!(err)
+    };
+}