From 8c0128bb02ef528588777bda1e818e72749a7006 Mon Sep 17 00:00:00 2001
From: jumbatm <30644300+jumbatm@users.noreply.github.com>
Date: Wed, 26 Aug 2020 23:32:57 +1000
Subject: Fix ICE on unwrap of unknown layout.

---
 src/test/ui/lint/clashing-extern-fn.rs | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'src/test')

diff --git a/src/test/ui/lint/clashing-extern-fn.rs b/src/test/ui/lint/clashing-extern-fn.rs
index d6ac7ccccc7..44cef19b0d3 100644
--- a/src/test/ui/lint/clashing-extern-fn.rs
+++ b/src/test/ui/lint/clashing-extern-fn.rs
@@ -285,3 +285,26 @@ mod null_optimised_enums {
         }
     }
 }
+
+#[allow(improper_ctypes)]
+mod unknown_layout {
+    mod a {
+        extern "C" {
+            pub fn generic(l: Link<u32>);
+        }
+        pub struct Link<T> {
+            pub item: T,
+            pub next: *const Link<T>,
+        }
+    }
+
+    mod b {
+        extern "C" {
+            pub fn generic(l: Link<u32>);
+        }
+        pub struct Link<T> {
+            pub item: T,
+            pub next: *const Link<T>,
+        }
+    }
+}
-- 
cgit 1.4.1-3-g733a5