2 files changed, 26 insertions, 0 deletions
diff --git a/src/test/ui-fulldeps/internal-lints/existing_doc_keyword.rs b/src/test/ui-fulldeps/internal-lints/existing_doc_keyword.rs
new file mode 100644
index 00000000000..053712a4b4e
--- /dev/null
+++ b/src/test/ui-fulldeps/internal-lints/existing_doc_keyword.rs
@@ -0,0 +1,11 @@
+// compile-flags: -Z unstable-options
+
+#![feature(rustc_private)]
+#![feature(doc_keyword)]
+
+#![crate_type = "lib"]
+
+#![deny(rustc::existing_doc_keyword)]
+
+#[doc(keyword = "tadam")] //~ ERROR
+mod tadam {}
diff --git a/src/test/ui-fulldeps/internal-lints/existing_doc_keyword.stderr b/src/test/ui-fulldeps/internal-lints/existing_doc_keyword.stderr
new file mode 100644
index 00000000000..bac44f338b7
--- /dev/null
+++ b/src/test/ui-fulldeps/internal-lints/existing_doc_keyword.stderr
@@ -0,0 +1,15 @@
+error: Found non-existing keyword `tadam` used in `#[doc(keyword = "...")]`
+  --> $DIR/existing_doc_keyword.rs:10:1
+   |
+LL | #[doc(keyword = "tadam")]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+note: the lint level is defined here
+  --> $DIR/existing_doc_keyword.rs:8:9
+   |
+LL | #![deny(rustc::existing_doc_keyword)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   = help: only existing keywords are allowed in core/std
+
+error: aborting due to previous error
+