Re: [Openexr-devel] Non initialized array

[Paul Miller]

On 11/22/2016 10:11 AM, Michel Lerenard wrote:
> On 11/22/2016 04:55 PM, Paul Miller wrote:
> > On 11/22/2016 8:28 AM, Michel Lerenard wrote:
> > > The lineSampleCount array is never reset. The code calls
> > > _data->lineSampleCount.resizeErase(_data->maxY - _data->minY + 1);
> > >
> > > in initialize(), then in the execute function of the buffer task, we
> > > increment the values of the cells, although they have never been set to
> > > zero !
> >
> > Doesn't "resizeErase" also set to zero?
> Unfortunately not:
>
> From ImfArray.h:
>
> template <class T>
> inline void
> Array<T>::resizeErase (long size)
> {
>     T *tmp = new T[size];
>     delete [] _data;
>     _size = size;
>     _data = tmp;
> }

Yikes! The function description has this unfortunate comment (in 
addition to the already-unfortunate function name):

//------------------------------------------------------
// Resize and clear the array (the contents of the array
// are not preserved across the resize operation).
//