Compiler Error C3841
Visual Studio 2005
Error Message
illegal delete expression: managed type 'type' does not have a destructor definedWhen compiled with /clr:oldSyntax, deleting a pointer only implements finalization. Therefore, if the class has no destructor defined (which implies that no Finalize method is provided), it is an error to delete a pointer to the type.
C3841 is only reachable using /clr:oldSyntax.
The following sample generates C3841:
// C3841.cpp
// compile with: /clr:oldSyntax
#using <mscorlib.dll>
__gc class A
{ // implicitly derived from System::Object
public:
~A() {};
};
int main()
{
System::Object* p = new A;
delete p; // C3841 since System::Object has no destructor defined
A* q = static_cast<A*>(p);
delete q; // OK since A has a destructor
}
