1 files changed, 21 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-15155.rs b/src/test/ui/issues/issue-15155.rs
new file mode 100644
index 000000000..7b137b4af
--- /dev/null
+++ b/src/test/ui/issues/issue-15155.rs
@@ -0,0 +1,21 @@
+// run-pass
+trait TraitWithSend: Send {}
+trait IndirectTraitWithSend: TraitWithSend {}
+
+// Check struct instantiation (Box<TraitWithSend> will only have Send if TraitWithSend has Send)
+#[allow(dead_code)]
+struct Blah { x: Box<dyn TraitWithSend> }
+impl TraitWithSend for Blah {}
+
+// Struct instantiation 2-levels deep
+#[allow(dead_code)]
+struct IndirectBlah { x: Box<dyn IndirectTraitWithSend> }
+impl TraitWithSend for IndirectBlah {}
+impl IndirectTraitWithSend for IndirectBlah {}
+
+fn test_trait<T: Send + ?Sized>() { println!("got here!") }
+
+fn main() {
+    test_trait::<dyn TraitWithSend>();
+    test_trait::<dyn IndirectTraitWithSend>();
+}