fix: add a workaround for redeclaration

1 files changed, 3 insertions, 0 deletions

diff --git a/sfinae.y b/sfinae.y
index e142aaa..1acb4d0 100644
--- a/sfinae.y
+++ b/sfinae.y
@@ -22,6 +22,7 @@ void yyerror(const char* message);
 %token TOK_STATIC_ASSERT
 %token TOK_COMMIT
 %token TOK_DECLARE
+%token TOK_UNDECLARE
 %token TOK_NAME
 %token TOK_VALUE_OF
 %token TOK_VOID
@@ -72,6 +73,8 @@ statement
         { $$ = node_unary(STMT_STATIC_ASSERT, $4); }
     | TOK_COLONCOLON TOK_DECLARE '<' name ',' type '>' TOK_COLONCOLON TOK_COMMIT
         { $$ = node_named(STMT_DECLARE, &$4, $6); }
+    | TOK_COLONCOLON TOK_UNDECLARE '<' name '>' TOK_COLONCOLON TOK_COMMIT
+        { $$ = node_named(STMT_UNDECLARE, &$4, NULL); }
     ;
 
 name