A probability of segmentation fault

[kazachkovaanna]

libcds/cds/intrusive/skip_list_nogc.h

Lines 55 to 61 in 44c052b

	atomic_ptr * release_tower()
	{
	atomic_ptr * pTower = m_arrNext;
	m_arrNext = nullptr;
	m_nHeight = 1;
	return pTower;
	}

Afrter m_arrNext = nullptr and before m_nHeight = 1 call of method next(uint nLevel) will cause segmentation fault. This to lines should be in reverse order

[kazachkovaanna]

@eugenyk please be aware we raised this issue

[eugenyk]

@kazachkovaanna, in case of pull request with bugfix and stress or unit test, which show the bug, your brigade will be awarded an excellent mark on exam

[eugenyk]

And a piece of advice: issue title should be more special, in your case now all segmentation faults in whole library can be addressed to your issue by name