[Solved] Cppcheck Possible null pointer dereference:

by 


if (NULL == m_buffer)

makes sure m_buffer is NULL, and then you derefence it with

std::cout << "Thread : " << m_buffer->m_id << "......work buffer is null" << std::endl;
                            ^^^^^^^^^^^^^^^

this, which is only legal if m_buffer is not NULL (more precisely, only if it points to a correctly constructed WorkBuffer).

If NULL is a possible input for your function, you need to check for it before the very first dereference and then either make it point to something valid or leave the function without dereferencing.

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solved Cppcheck Possible null pointer dereference: