X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Flibstd%2Fnet%2Ftcp.rs;h=3eb2a332d267b848aad1bad6a5f1d38981def6e9;hb=01bebdf19321a1597f35c2fc2130f1627e944bcf;hp=c4b0cd0f17c347e6e4240637dd3b5976eaf733e0;hpb=f9c9512628d3df8b24cb4a6982cfdefaef77ad51;p=rust.git

diff --git a/src/libstd/net/tcp.rs b/src/libstd/net/tcp.rs
index c4b0cd0f17c..3eb2a332d26 100644
--- a/src/libstd/net/tcp.rs
+++ b/src/libstd/net/tcp.rs
@@ -1187,9 +1187,13 @@ fn partial_read() {
     #[test]
     fn double_bind() {
         each_ip(&mut |addr| {
-            let _listener = t!(TcpListener::bind(&addr));
+            let listener1 = t!(TcpListener::bind(&addr));
             match TcpListener::bind(&addr) {
-                Ok(..) => panic!(),
+                Ok(listener2) => panic!(
+                    "This system (perhaps due to options set by TcpListener::bind) \
+                     permits double binding: {:?} and {:?}",
+                    listener1, listener2
+                ),
                 Err(e) => {
                     assert!(e.kind() == ErrorKind::ConnectionRefused ||
                             e.kind() == ErrorKind::Other ||