[PATCH] kdelibs: Memory leaks (d-pointer not deleted) fixed

Thiago Macieira thiago.macieira at kdemail.net
Thu Oct 28 19:58:00 BST 2004

Andrew Coles wrote:
>On Thursday 28 Oct 2004 12:18, Thiago Macieira wrote:
>>There's also the case of KCharSelect, in which the destructor is now
>> added, instead of the implicit one. That doesn't break binary
>> compatibility, but old code will not see the improvement.
>Just looking at KCharSelect, is there a good reason why it isn't:
>KCharSelectPrivate* const d;
>instead of
>KCharSelectPrivate *d;
>and then initialise d using the initialisation syntax instead of as the
> first line of the constructor, i.e.
> ... QVBox( parent, name ), d(new KCharSelectPrivate) {
>instead of
> ... QVBox( parent, name ) {
>    d = new KCharSelectPrivate;
>If my understanding of const-based optimisations is correct, this would be
>more efficient as the class methods could assume that the pointer d hasn't
>changed between references to it.

That's correct. The implementation is more efficient, since the d pointer 
cannot change during the existence of the class.

However, that doesn't change the fact that it leaks or that the fix won't be 
seen by old code.

  Thiago Macieira  -  Registered Linux user #65028
   thiago (AT) macieira (DOT) info
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