Codegen basic arrays with size attached

new_ast.cpp

@@ -409,7 +409,7 @@ function Ast_Array *
 ast_array(Token *pos, Ast_Expr *expr){
   AST_NEW(Array, ARRAY, pos, AST_EXPR);
   result->expr = expr;
-  result->expr->parent = result;
+  if(result->expr) result->expr->parent = result;
   return result;
 }