1 files changed, 8 insertions, 0 deletions
diff --git a/tests/ui/auto-traits/pre-cfg.rs b/tests/ui/auto-traits/pre-cfg.rs
new file mode 100644
index 000000000..e6e840dcb
--- /dev/null
+++ b/tests/ui/auto-traits/pre-cfg.rs
@@ -0,0 +1,8 @@
+// check-pass
+
+#[cfg(FALSE)]
+auto trait Foo {}
+//~^ WARN `auto` traits are unstable
+//~| WARN unstable syntax can change at any point in the future, causing a hard error!
+
+fn main() {}