Cyril Moineau
--- a/include/aidge/operator/Producer.hpp
+++ b/include/aidge/operator/Producer.hpp
-    printf("Basic Producer forward() function.\n");
-  }
-  void backward() override final {
-    printf("Basic Producer backward() function.\n");
-  }
+    void forward() override final {
+        printf("Basic Producer forward() function.\n");
+    }
+    void backward() override final {
+        printf("Basic Producer backward() function.\n");
+    }
+    void setOutput(const Aidge::IOIndex_t outputIdx, std::shared_ptr<Aidge::Data>&& data) override {
+        if (getAttr<ProdAttr::Constant>()) {
+            AIDGE_THROW_OR_ABORT(std::runtime_error, "Producer is constant, cannot update output.");
+        }
+        OperatorTensor::setOutput(outputIdx, data);
-        OperatorTensor::setOutput(outputIdx, data);
+        OperatorTensor::setOutput(outputIdx, std::move(data));