2 files changed, 18 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-52705/auxiliary/png2.rs b/src/test/ui/issues/issue-52705/auxiliary/png2.rs
new file mode 100644
index 000000000..fa9956e44
--- /dev/null
+++ b/src/test/ui/issues/issue-52705/auxiliary/png2.rs
@@ -0,0 +1,3 @@
+#![crate_type = "lib"]
+
+pub struct DecodingError;
diff --git a/src/test/ui/issues/issue-52705/main.rs b/src/test/ui/issues/issue-52705/main.rs
new file mode 100644
index 000000000..90bb8ca75
--- /dev/null
+++ b/src/test/ui/issues/issue-52705/main.rs
@@ -0,0 +1,15 @@
+// run-pass
+#![allow(dead_code)]
+// aux-build:png2.rs
+// compile-flags:--extern png2
+// edition:2018
+
+mod png {
+    use png2 as png_ext;
+
+    fn foo() -> png_ext::DecodingError { unimplemented!() }
+}
+
+fn main() {
+    println!("Hello, world!");
+}