2 files changed, 18 insertions, 0 deletions
diff --git a/src/test/rustdoc-ui/invalid-cfg.rs b/src/test/rustdoc-ui/invalid-cfg.rs
new file mode 100644
index 00000000000..d237b8605c0
--- /dev/null
+++ b/src/test/rustdoc-ui/invalid-cfg.rs
@@ -0,0 +1,4 @@
+#![feature(doc_cfg)]
+#[doc(cfg = "x")] //~ ERROR not followed by parentheses
+#[doc(cfg(x, y))] //~ ERROR multiple `cfg` predicates
+struct S {}
diff --git a/src/test/rustdoc-ui/invalid-cfg.stderr b/src/test/rustdoc-ui/invalid-cfg.stderr
new file mode 100644
index 00000000000..dae238b052b
--- /dev/null
+++ b/src/test/rustdoc-ui/invalid-cfg.stderr
@@ -0,0 +1,14 @@
+error: `cfg` is not followed by parentheses
+  --> $DIR/invalid-cfg.rs:2:7
+   |
+LL | #[doc(cfg = "x")]
+   |       ^^^^^^^^^ help: expected syntax is: `cfg(/* predicate */)`
+
+error: multiple `cfg` predicates are specified
+  --> $DIR/invalid-cfg.rs:3:14
+   |
+LL | #[doc(cfg(x, y))]
+   |              ^
+
+error: aborting due to 2 previous errors
+