1 files changed, 18 insertions, 0 deletions
diff --git a/src/test/ui/span/issue-33884.rs b/src/test/ui/span/issue-33884.rs
new file mode 100644
index 000000000..5d927a5ac
--- /dev/null
+++ b/src/test/ui/span/issue-33884.rs
@@ -0,0 +1,18 @@
+use std::net::TcpListener;
+use std::net::TcpStream;
+use std::io::{self, Read, Write};
+
+fn handle_client(stream: TcpStream) -> io::Result<()> {
+    stream.write_fmt(format!("message received"))
+    //~^ ERROR mismatched types
+}
+
+fn main() {
+    if let Ok(listener) = TcpListener::bind("127.0.0.1:8080") {
+        for incoming in listener.incoming() {
+            if let Ok(stream) = incoming {
+                handle_client(stream);
+            }
+        }
+    }
+}