@@ -59,7 +59,10 @@ ASTLoweringItem::visit (AST::Module &module)
for (auto &item : module.get_items ())
{
auto transitem = translate (item.get ());
- items.push_back (std::unique_ptr<Item> (transitem));
+ // The item may be null if it doesn't need to live in the HIR - for
+ // example, macro rules definitions
+ if (transitem)
+ items.push_back (std::unique_ptr<Item> (transitem));
}
// should be lowered/copied from module.get_in/outer_attrs()
new file mode 100644
@@ -0,0 +1,34 @@
+mod foo {
+ mod bar {
+ mod baz {
+ macro_rules! baz {
+ () => {{}};
+ }
+ }
+ }
+
+ macro_rules! foo {
+ () => {{}};
+ }
+
+ fn foo_f() { // { dg-warning "function is never used" }
+ foo!();
+ }
+
+ fn bar_f() { // { dg-warning "function is never used" }
+ baz!();
+ }
+}
+
+mod foo2 {
+ #[macro_export]
+ macro_rules! bar1 {
+ () => {};
+ }
+
+ macro_rules! bar2 {
+ () => {};
+ }
+}
+
+fn main() {}