parse attrs from inside of macro bodies

Author: Bryntet

compiler/rustc_passes/src/check_attr.rs

@@ -1892,11 +1892,12 @@ impl<'tcx> Visitor<'tcx> for CheckAttrVisitor<'tcx> {
         // Historically we've run more checks on non-exported than exported macros,
         // so this lets us continue to run them while maintaining backwards compatibility.
         // In the long run, the checks should be harmonized.
-        if let ItemKind::Macro(_, macro_def, _) = item.kind {
+        if let ItemKind::Macro(ident, macro_def, _) = item.kind {
             let def_id = item.owner_id.to_def_id();
             if macro_def.macro_rules && !find_attr!(self.tcx, def_id, MacroExport { .. }) {
                 check_non_exported_macro_for_invalid_attrs(self.tcx, item);
             }
+            intravisit::walk_ident(self, ident);
         }
 
         let target = Target::from_item(item);