1 files changed, 21 insertions, 0 deletions
diff --git a/src/test/ui/typeck/typeck-default-trait-impl-negation-send.rs b/src/test/ui/typeck/typeck-default-trait-impl-negation-send.rs
new file mode 100644
index 000000000..3a2fc39d4
--- /dev/null
+++ b/src/test/ui/typeck/typeck-default-trait-impl-negation-send.rs
@@ -0,0 +1,21 @@
+#![feature(negative_impls)]
+
+struct MySendable {
+   t: *mut u8
+}
+
+unsafe impl Send for MySendable {}
+
+struct MyNotSendable {
+   t: *mut u8
+}
+
+impl !Send for MyNotSendable {}
+
+fn is_send<T: Send>() {}
+
+fn main() {
+    is_send::<MySendable>();
+    is_send::<MyNotSendable>();
+    //~^ ERROR `MyNotSendable` cannot be sent between threads safely
+}