2 files changed, 37 insertions, 2 deletions
diff --git a/src/test/ui/lint/lint-missing-doc.rs b/src/test/ui/lint/lint-missing-doc.rs
index bab6f4e9e5e..2297257919e 100644
--- a/src/test/ui/lint/lint-missing-doc.rs
+++ b/src/test/ui/lint/lint-missing-doc.rs
@@ -2,7 +2,7 @@
 // injected intrinsics by the compiler.
 #![deny(missing_docs)]
 #![allow(dead_code)]
-#![feature(associated_type_defaults)]
+#![feature(associated_type_defaults, extern_types)]
 
 //! Some garbage docs for the crate here
 #![doc="More garbage"]
@@ -183,4 +183,21 @@ pub mod public_interface {
     pub use internal_impl::globbed::*;
 }
 
+extern "C" {
+    /// dox
+    pub fn extern_fn_documented(f: f32) -> f32;
+    pub fn extern_fn_undocumented(f: f32) -> f32;
+    //~^ ERROR: missing documentation for a function
+
+    /// dox
+    pub static EXTERN_STATIC_DOCUMENTED: u8;
+    pub static EXTERN_STATIC_UNDOCUMENTED: u8;
+    //~^ ERROR: missing documentation for a static
+
+    /// dox
+    pub type ExternTyDocumented;
+    pub type ExternTyUndocumented;
+    //~^ ERROR: missing documentation for a foreign type
+}
+
 fn main() {}
diff --git a/src/test/ui/lint/lint-missing-doc.stderr b/src/test/ui/lint/lint-missing-doc.stderr
index 21da4fae4c1..56f8fc10e86 100644
--- a/src/test/ui/lint/lint-missing-doc.stderr
+++ b/src/test/ui/lint/lint-missing-doc.stderr
@@ -118,5 +118,23 @@ error: missing documentation for a function
 LL |         pub fn also_undocumented1() {}
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to 19 previous errors
+error: missing documentation for a function
+  --> $DIR/lint-missing-doc.rs:189:5
+   |
+LL |     pub fn extern_fn_undocumented(f: f32) -> f32;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: missing documentation for a static
+  --> $DIR/lint-missing-doc.rs:194:5
+   |
+LL |     pub static EXTERN_STATIC_UNDOCUMENTED: u8;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: missing documentation for a foreign type
+  --> $DIR/lint-missing-doc.rs:199:5
+   |
+LL |     pub type ExternTyUndocumented;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to 22 previous errors