1 files changed, 20 insertions, 0 deletions
diff --git a/tests/ui/cfg/cfg-false-feature.rs b/tests/ui/cfg/cfg-false-feature.rs
new file mode 100644
index 000000000..21ea3ec79
--- /dev/null
+++ b/tests/ui/cfg/cfg-false-feature.rs
@@ -0,0 +1,20 @@
+// It is unclear which features should be in effect in a fully unconfigured crate (issue #104633).
+// Currently none on the features are in effect, so we get the feature gates reported.
+
+// check-pass
+// compile-flags: --crate-type lib
+
+#![feature(decl_macro)]
+#![cfg(FALSE)]
+#![feature(box_syntax)]
+
+macro mac() {} //~ WARN `macro` is experimental
+               //~| WARN unstable syntax can change at any point in the future
+
+trait A = Clone; //~ WARN trait aliases are experimental
+                 //~| WARN unstable syntax can change at any point in the future
+
+fn main() {
+    let box _ = Box::new(0); //~ WARN box pattern syntax is experimental
+                             //~| WARN unstable syntax can change at any point in the future
+}