1 files changed, 18 insertions, 0 deletions
diff --git a/src/test/ui/feature-gates/feature-gate-optimize_attribute.rs b/src/test/ui/feature-gates/feature-gate-optimize_attribute.rs
new file mode 100644
index 000000000..15aa3a6af
--- /dev/null
+++ b/src/test/ui/feature-gates/feature-gate-optimize_attribute.rs
@@ -0,0 +1,18 @@
+#![crate_type="rlib"]
+#![optimize(speed)] //~ ERROR the `#[optimize]` attribute is an experimental feature
+
+#[optimize(size)] //~ ERROR the `#[optimize]` attribute is an experimental feature
+mod module {
+
+#[optimize(size)] //~ ERROR the `#[optimize]` attribute is an experimental feature
+fn size() {}
+
+#[optimize(speed)] //~ ERROR the `#[optimize]` attribute is an experimental feature
+fn speed() {}
+
+#[optimize(banana)]
+//~^ ERROR the `#[optimize]` attribute is an experimental feature
+//~| ERROR E0722
+fn not_known() {}
+
+}