Re: Uninitialized object hangs without warning.

[Bear Cherian via Digitalmars-d-learn]

On Wednesday, 26 November 2014 at 09:38:11 UTC, bearophile wrote:

Bear Cherian:

Class MyClass{

   this(){}

   void someFunction(){
       //body
   }

}

And in my app I had something like

   MyClass classObject;
   classObject.someFunction();

When I compile, no warnings or errors.

If you compile that code (with lowercase Class) with -O the compiler finds the bug:

class MyClass {
    this() {}

    void someFunction() {
        //body
    }
}

void main() {
    MyClass classObject;
    classObject.someFunction;
}


test.d(11,5): Error: null dereference in function _Dmain


But in more complex cases the compiler doesn't.

Bye,
bearophile

Yes, the capital C was a typo.

I still think this shouldn't be an optimization. Maybe I'm just
used to Java, as this would be a compile error by default.