Compiler Warning (level 1) C4461


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The latest version of this topic can be found at Compiler Warning (level 1) C4461.

type' : this class has a finalizer 'finalizer' but no destructor 'dtor'

The presence of a finalizer in a type implies resources to delete. Unless a finalizer is explicitly called from the type's destructor, the common language runtime determines when to run the finalizer, after your object goes out of scope.

If you define a destructor in the type and explicitly call the finalizer from the destructor, you can deterministically run your finalizer.

For more information, see Destructors and finalizers.

The following sample generates C4461.

// C4461.cpp  
// compile with: /W1 /clr /c  
ref class A {  
   !A() {}   // C4461  
// OK  
ref struct B {  
   ~B() {  
   !B() {}