[Mingw-users] Probably problem with c++ vptr in gcc 4.7.2

[Walid R. <wr...@em...>]

Hello,
 I have some code that compile and work fine in gcc 4.6.2 (without tne new keyword "override" ) but in version 4.7.2 it complie generate access violation runtime
 So, i need some help, thank you very much:

 #include <iostream>
 using namespace std;

 struct Entity {
 //~Entity() = default; //work fine
 ~Entity() {} //when i specified my destructor this compile but generate runtime access viloation
 };

 template<typename T>
 struct IRepository { virtual T g() = 0; };

 struct OtherInterface{ virtual void y() = 0; };

 struct IEntityRepository : public virtual IRepository<Entity>{ };

 template<typename T>
 struct RepositoryBase : public virtual IRepository<T>, public OtherInterface{
 virtual void y() override { cout << "y() override called" << endl; }
 };

 template<typename T>
 struct DataRepository : public RepositoryBase<T>{
 virtual T f() { cout << "f() called" << endl; this->y(); T t; return t; }
 T g() override {
 cout << "g() override called" << endl;
 ////when i specified my destructor for class Entity this compile but generate runtime access viloation here : on this: probably problem with vptr
 return this->f(); }
 };

 struct EffectiveEntityRepository : public DataRepository<Entity>, public IEntityRepository{
 };

 int main() {
 IEntityRepository* var = new EffectiveEntityRepository();
 var->g();
 return 1;
 }