1 files changed, 2 insertions, 1 deletions
diff --git a/src/expand/macro_rules.hpp b/src/expand/macro_rules.hpp
index 81e9b18a..b4e6e1e0 100644
--- a/src/expand/macro_rules.hpp
+++ b/src/expand/macro_rules.hpp
@@ -11,5 +11,6 @@ namespace AST {
     class Module;
 }
 class TokenTree;
+class TokenStream;
 
-extern AST::Expr Macro_Invoke(const char* name, const MacroRules& rules, const TokenTree& tt, AST::Module& mod, MacroPosition position);
+extern ::std::unique_ptr<TokenStream>   Macro_Invoke(const char* name, const MacroRules& rules, const TokenTree& tt, AST::Module& mod);