diff --git a/executorch-sys/cpp/executorch_rs_ext/api_utils.cpp b/executorch-sys/cpp/executorch_rs_ext/api_utils.cpp
index c06635a..479c1e0 100644
--- a/executorch-sys/cpp/executorch_rs_ext/api_utils.cpp
+++ b/executorch-sys/cpp/executorch_rs_ext/api_utils.cpp
@@ -39,10 +39,7 @@ namespace executorch_rs
     // static_assert(offsetof(Result_i64, hasValue_) == offsetof(torch::executor::Result<int64_t>, hasValue_), "Result_i64 hasValue_ offset mismatch");
     Result_i64 crate_Result_i64(const torch::executor::Result<int64_t> &result)
     {
-        Result_i64 result2{
-            .error_ = torch::executor::Error::Ok,
-            .hasValue_ = false,
-        };
+        Result_i64 result2;
         memcpy(&result2, &result, sizeof(Result_i64));
         return result2;
     }
@@ -53,10 +50,7 @@ namespace executorch_rs
     // static_assert(offsetof(Result_MethodMeta, hasValue_) == offsetof(torch::executor::Result<torch::executor::MethodMeta>, hasValue_), "Result_MethodMeta hasValue_ offset mismatch");
     Result_MethodMeta crate_Result_MethodMeta(const torch::executor::Result<torch::executor::MethodMeta> &result)
     {
-        Result_MethodMeta result2{
-            .error_ = torch::executor::Error::Ok,
-            .hasValue_ = false,
-        };
+        Result_MethodMeta result2;
         memcpy(&result2, &result, sizeof(Result_MethodMeta));
         return result2;
     }
diff --git a/executorch-sys/cpp/executorch_rs_ext/api_utils.hpp b/executorch-sys/cpp/executorch_rs_ext/api_utils.hpp
index 5ed6384..be06b96 100644
--- a/executorch-sys/cpp/executorch_rs_ext/api_utils.hpp
+++ b/executorch-sys/cpp/executorch_rs_ext/api_utils.hpp
@@ -56,6 +56,11 @@ namespace executorch_rs
 
         /// True if the Result contains a value.
         const bool hasValue_;
+
+        Result_i64() : error_(torch::executor::Error::Ok), hasValue_(false) {}
+        Result_i64(const Result_i64 &) = default;
+        Result_i64 &operator=(const Result_i64 &) = default;
+        ~Result_i64() = default;
     };
     struct Result_MethodMeta
     {
@@ -68,6 +73,11 @@ namespace executorch_rs
 
         /// True if the Result contains a value.
         const bool hasValue_;
+
+        Result_MethodMeta() : error_(torch::executor::Error::Ok), hasValue_(false) {}
+        Result_MethodMeta(const Result_MethodMeta &) = default;
+        Result_MethodMeta &operator=(const Result_MethodMeta &) = default;
+        ~Result_MethodMeta() = default;
     };
 
     Result_MethodMeta Program_method_meta(const torch::executor::Program *self, const char *method_name);