Merge ref '6bcdcc73bd11' from rust-lang/rust

Pull recent changes from https://github.com/rust-lang/rust via Josh.

Upstream ref: 6bcdcc73bd11568fd85f5a38b58e1eda054ad1cd
Filtered ref: 6cc4ce79e1f8dc0ec5a2e18049b9c1a51dee3221

This merge was created using https://github.com/rust-lang/josh-sync.

1 files changed, 11 insertions, 0 deletions

diff --git a/tests/ui/trait-objects/trait-object-lifetime-conversion-47638.rs b/tests/ui/trait-objects/trait-object-lifetime-conversion-47638.rs
new file mode 100644
index 00000000000..c70dc74f3e5
--- /dev/null
+++ b/tests/ui/trait-objects/trait-object-lifetime-conversion-47638.rs
@@ -0,0 +1,11 @@
+// https://github.com/rust-lang/rust/issues/47638
+//@ run-pass
+#![allow(unused_variables)]
+fn id<'c, 'b>(f: &'c &'b dyn Fn(&i32)) -> &'c &'b dyn Fn(&'static i32) {
+    f
+}
+
+fn main() {
+    let f: &dyn Fn(&i32) = &|x| {};
+    id(&f);
+}