1 files changed, 15 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-26997.rs b/src/test/ui/issues/issue-26997.rs
new file mode 100644
index 000000000..3653e6273
--- /dev/null
+++ b/src/test/ui/issues/issue-26997.rs
@@ -0,0 +1,15 @@
+// build-pass
+#![allow(dead_code)]
+pub struct Foo {
+    x: isize,
+    y: isize
+}
+
+impl Foo {
+    #[allow(improper_ctypes_definitions)]
+    pub extern "C" fn foo_new() -> Foo {
+        Foo { x: 21, y: 33 }
+    }
+}
+
+fn main() {}