rustc_trans: keep LLVM types for trait objects anonymous.

2 files changed, 20 insertions, 2 deletions

diff --git a/src/test/codegen/function-arguments.rs b/src/test/codegen/function-arguments.rs
index f8945a6ee8d..0e98d3f9050 100644
--- a/src/test/codegen/function-arguments.rs
+++ b/src/test/codegen/function-arguments.rs
@@ -122,13 +122,13 @@ pub fn unsafe_slice(_: &[UnsafeInner]) {
 pub fn str(_: &[u8]) {
 }
 
-// CHECK: @trait_borrow(%"core::ops::drop::Drop"* nonnull %arg0.0, {}* noalias nonnull readonly %arg0.1)
+// CHECK: @trait_borrow({}* nonnull %arg0.0, {}* noalias nonnull readonly %arg0.1)
 // FIXME #25759 This should also have `nocapture`
 #[no_mangle]
 pub fn trait_borrow(_: &Drop) {
 }
 
-// CHECK: @trait_box(%"core::ops::drop::Drop"* noalias nonnull, {}* noalias nonnull readonly)
+// CHECK: @trait_box({}* noalias nonnull, {}* noalias nonnull readonly)
 #[no_mangle]
 pub fn trait_box(_: Box<Drop>) {
 }
diff --git a/src/test/run-pass/issue-47638.rs b/src/test/run-pass/issue-47638.rs
new file mode 100644
index 00000000000..6f627b2a3c1
--- /dev/null
+++ b/src/test/run-pass/issue-47638.rs
@@ -0,0 +1,18 @@
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+fn id<'c, 'b>(f: &'c &'b Fn(&i32)) -> &'c &'b Fn(&'static i32) {
+    f
+}
+
+fn main() {
+    let f: &Fn(&i32) = &|x| {};
+    id(&f);
+}