1 files changed, 25 insertions, 0 deletions
diff --git a/src/test/ui/traits/bound/basic.rs b/src/test/ui/traits/bound/basic.rs
new file mode 100644
index 000000000..8c8a7eb7d
--- /dev/null
+++ b/src/test/ui/traits/bound/basic.rs
@@ -0,0 +1,25 @@
+// run-pass
+#![allow(dead_code)]
+#![allow(unconditional_recursion)]
+
+// pretty-expanded FIXME #23616
+
+trait Foo {
+}
+
+fn b(_x: Box<dyn Foo+Send>) {
+}
+
+fn c(x: Box<dyn Foo+Sync+Send>) {
+    e(x);
+}
+
+fn d(x: Box<dyn Foo+Send>) {
+    e(x);
+}
+
+fn e(x: Box<dyn Foo>) {
+    e(x);
+}
+
+pub fn main() { }