Fresh list:
buf = 0x645030, cap = 2, size = 0, start = 0, end = 0
After adding 45, 48, 46:
SortedSquareList::dump(): m_size = 2
[0] SSLColumn::dump(): m_size = 2
[0] 45, [1] 46, 
[1] SSLColumn::dump(): m_size = 1
[1] 48, 
>>>Testing size() and capacity(): expecting 3, 4; got 3, 4
Adding 47:
orig: buf = 0x645030, cap = 2, size = 2, start = 0, end = 0
SortedSquareList::dump(): m_size = 2
[0] SSLColumn::dump(): m_size = 2
[0] 45, [1] 46, 
[1] SSLColumn::dump(): m_size = 2
[0] 47, [1] 48, 
>>>Testing copy constructor on dynamic object:
results should be IDENTICAL to above (except for buf addr):
copy: buf = 0x645120, cap = 2, size = 2, start = 0, end = 0
SortedSquareList::dump(): m_size = 2
[0] SSLColumn::dump(): m_size = 2
[0] 45, [1] 46, 
[1] SSLColumn::dump(): m_size = 2
[0] 47, [1] 48, 
>>>Calling destructor
>>>Now calling overloaded operator= :
SortedSquareList::dump(): m_size = 2
[0] SSLColumn::dump(): m_size = 2
[0] 45, [1] 46, 
[1] SSLColumn::dump(): m_size = 2
[0] 47, [1] 48, 
>>>Triggering growth: adding 49, cap should grow to 4 cols
buf = 0x6452a0, cap = 4, size = 2, start = 0, end = 2
SortedSquareList::dump(): m_size = 2
[0] SSLColumn::dump(): m_size = 2
[0] 45, [1] 46, 
[1] SSLColumn::dump(): m_size = 3
[0] 47, [1] 48, [2] 49, 
>>>Now calling overloaded operator= to copy in-place into larger list
orig: buf = 0x645030, cap = 2, size = 2, start = 0, end = 0
copy: buf = 0x6452a0, cap = 4, size = 2, start = 0, end = 2
SortedSquareList::dump(): m_size = 2
[0] SSLColumn::dump(): m_size = 2
[0] 45, [1] 46, 
[1] SSLColumn::dump(): m_size = 2
[0] 47, [1] 48, 
Shrinking list to {45, 47}
>>>Then calling overloaded operator= to copy in-place into smaller square list
orig: buf = 0x645030, cap = 2, size = 2, start = 0, end = 2
SortedSquareList::dump(): m_size = 2
[0] SSLColumn::dump(): m_size = 1
[0] 45, 
[1] SSLColumn::dump(): m_size = 1
[0] 47,