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Hello. Why an error occurs during processing of user class with vector by Reflection Class? For example, I have the following class: class MyClass { private: int myVector[0] = (1, 2, 3); public: MyClass() {} void addItem(int value) { myVector.append(value); } int getItem(int num) { return myVector[num]; } int getNumItems() { return myVector.size(); } }; I use this class in Init() function: int init() { MyClass my_class = new MyClass(); my_class.addItem(4); forloop(int i = 0; my_class.getNumItems()) { log.message("item[%d] = %d;\n", i, my_class.getItem(i)); } /* Output: * item[0] = 1; * item[1] = 2; * item[2] = 3; * item[3] = 4; */ Reflection my_reflection = new Reflection(); my_reflection.reflect(my_class); // here is an error return 1; } And i have following error: Assertion: '(unsigned int)index < (unsigned int)length && "Vector::operator[](): bad index" ' Update: I initialize the vector in constructor, but the probled remained. Then I just declared a variable in the class and the problem disappeared. But this variable is unused. Code: class MyClass { private: int myVector[0]; int i; public: MyClass() { myVector = (1,2,3); } void addItem(int value) { myVector.append(value); } int getItem(int num) { return myVector[num]; } int getNumItems() { return myVector.size(); } };