[ublas] unbounded array resize bug

From: Vyacheslav E. Andrejev (vandrejev_at_[hidden])
Date: 2005-08-20 22:43:28

Hello,

There is a bug in unbounded_array::resize_internal. Pointer to new allocated 
memory is assigned to unbounded_array::data_ member only if previous size 
wasn't zero:

                if (size_) {
                    const iterator i_end = end();
                    for (iterator i = begin(); i != i_end; ++i) {
                        iterator_destroy (i); 
                    }
                    alloc_.deallocate (data_, size_);
                    data_ = data;
                }

Therefore if I'm going to resize vector with zero size (created by default 
constructor for example), data_ remains zero pointer.

-- 
Vyacheslav E. Andrejev
System Architect, Excelsior, LLC