Block #[cfg] attributes on inner constants

codegen/ui_tests/module_cfg_const.rs

@@ -0,0 +1,31 @@
+use rhai::plugin::*;
+
+#[derive(Clone)]
+pub struct Point {
+    x: f32,
+    y: f32,
+}
+
+#[export_module]
+pub mod test_module {
+    use rhai::FLOAT;
+
+    #[cfg(feature = "foo")]
+    pub const MAGIC: FLOAT = 42.0 as FLOAT;
+
+    pub fn test_fn(input: Point) -> bool {
+        input.x > input.y
+    }
+}
+
+fn main() {
+    let n = Point {
+        x: 0.0,
+        y: 10.0,
+    };
+    if test_module::test_fn(n) {
+        println!("yes");
+    } else {
+        println!("no");
+    }
+}

codegen/ui_tests/module_cfg_const.stderr

@@ -0,0 +1,11 @@
+error: cfg attributes not allowed on this item
+  --> $DIR/module_cfg_const.rs:13:5
+   |
+13 |     #[cfg(feature = "foo")]
+   |     ^^^^^^^^^^^^^^^^^^^^^^^
+
+error[E0433]: failed to resolve: use of undeclared type or module `test_module`
+  --> $DIR/module_cfg_const.rs:26:8
+   |
+26 |     if test_module::test_fn(n) {
+   |        ^^^^^^^^^^^ use of undeclared type or module `test_module`