1 files changed, 59 insertions, 0 deletions
diff --git a/tests/ui/threads-sendsync/task-comm-7.rs b/tests/ui/threads-sendsync/task-comm-7.rs
new file mode 100644
index 00000000000..0b9673e0033
--- /dev/null
+++ b/tests/ui/threads-sendsync/task-comm-7.rs
@@ -0,0 +1,59 @@
+// run-pass
+#![allow(unused_must_use)]
+#![allow(unused_assignments)]
+// ignore-emscripten no threads support
+
+use std::sync::mpsc::{channel, Sender};
+use std::thread;
+
+pub fn main() { test00(); }
+
+fn test00_start(c: &Sender<isize>, start: isize,
+                number_of_messages: isize) {
+    let mut i: isize = 0;
+    while i < number_of_messages { c.send(start + i).unwrap(); i += 1; }
+}
+
+fn test00() {
+    let mut r: isize = 0;
+    let mut sum: isize = 0;
+    let (tx, rx) = channel();
+    let number_of_messages: isize = 10;
+
+    let tx2 = tx.clone();
+    let t1 = thread::spawn(move|| {
+        test00_start(&tx2, number_of_messages * 0, number_of_messages);
+    });
+    let tx2 = tx.clone();
+    let t2 = thread::spawn(move|| {
+        test00_start(&tx2, number_of_messages * 1, number_of_messages);
+    });
+    let tx2 = tx.clone();
+    let t3 = thread::spawn(move|| {
+        test00_start(&tx2, number_of_messages * 2, number_of_messages);
+    });
+    let tx2 = tx.clone();
+    let t4 = thread::spawn(move|| {
+        test00_start(&tx2, number_of_messages * 3, number_of_messages);
+    });
+
+    let mut i: isize = 0;
+    while i < number_of_messages {
+        r = rx.recv().unwrap();
+        sum += r;
+        r = rx.recv().unwrap();
+        sum += r;
+        r = rx.recv().unwrap();
+        sum += r;
+        r = rx.recv().unwrap();
+        sum += r;
+        i += 1;
+    }
+
+    assert_eq!(sum, number_of_messages * 4 * (number_of_messages * 4 - 1) / 2);
+
+    t1.join();
+    t2.join();
+    t3.join();
+    t4.join();
+}