DMD can implicitly convert class pointer to the bool. Is it bug or terrible feature?

[bearophile]

Andrei Alexandrescu:

>> class Foo
>> {
>> }
>>
>> class Bar
>> {
>>     Foo f;
>>
>>     void bar()
>>     {
>>         //variable was wrongly commented here
>>         //bool f = true;
>>
>>         if(f)
>>         {
>>             //Oops!
>>         }
>>     }
>> }
>
> If uncommented that would make for a shadow definition error.

Are you saying this code gives or should give errors?


class Foo {}
class Bar {
      Foo f;
      void bar() {
          bool f = true;
          if (f) {}
      }
}
void main() {}


Bye,
bearophile