1 files changed, 55 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-40827.stderr b/src/test/ui/issues/issue-40827.stderr
new file mode 100644
index 000000000..11c23e5b6
--- /dev/null
+++ b/src/test/ui/issues/issue-40827.stderr
@@ -0,0 +1,55 @@
+error[E0277]: `Rc<Foo>` cannot be shared between threads safely
+  --> $DIR/issue-40827.rs:14:7
+   |
+LL |     f(Foo(Arc::new(Bar::B(None))));
+   |     - ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `Rc<Foo>` cannot be shared between threads safely
+   |     |
+   |     required by a bound introduced by this call
+   |
+   = help: within `Bar`, the trait `Sync` is not implemented for `Rc<Foo>`
+note: required because it appears within the type `Bar`
+  --> $DIR/issue-40827.rs:6:6
+   |
+LL | enum Bar {
+   |      ^^^
+   = note: required because of the requirements on the impl of `Send` for `Arc<Bar>`
+note: required because it appears within the type `Foo`
+  --> $DIR/issue-40827.rs:4:8
+   |
+LL | struct Foo(Arc<Bar>);
+   |        ^^^
+note: required by a bound in `f`
+  --> $DIR/issue-40827.rs:11:9
+   |
+LL | fn f<T: Send>(_: T) {}
+   |         ^^^^ required by this bound in `f`
+
+error[E0277]: `Rc<Foo>` cannot be sent between threads safely
+  --> $DIR/issue-40827.rs:14:7
+   |
+LL |     f(Foo(Arc::new(Bar::B(None))));
+   |     - ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `Rc<Foo>` cannot be sent between threads safely
+   |     |
+   |     required by a bound introduced by this call
+   |
+   = help: within `Bar`, the trait `Send` is not implemented for `Rc<Foo>`
+note: required because it appears within the type `Bar`
+  --> $DIR/issue-40827.rs:6:6
+   |
+LL | enum Bar {
+   |      ^^^
+   = note: required because of the requirements on the impl of `Send` for `Arc<Bar>`
+note: required because it appears within the type `Foo`
+  --> $DIR/issue-40827.rs:4:8
+   |
+LL | struct Foo(Arc<Bar>);
+   |        ^^^
+note: required by a bound in `f`
+  --> $DIR/issue-40827.rs:11:9
+   |
+LL | fn f<T: Send>(_: T) {}
+   |         ^^^^ required by this bound in `f`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0277`.