82         return nullptr;  in extract_task()
86         __TBB_ASSERT_RELEASE(false, nullptr);  in execute()
87         return nullptr;  in execute()
90         __TBB_ASSERT_RELEASE(false, nullptr);  in cancel()
91         return nullptr;  in cancel()
118             return nullptr;  in internal_pop()
126                     return nullptr;  in internal_pop()
137             prev_ptr->store(nullptr, std::memory_order_relaxed);  in internal_pop()
141                 __TBB_ASSERT( !curr->next_in_mailbox.load(std::memory_order_relaxed), nullptr);  in internal_pop()
161         t->next_in_mailbox.store(nullptr, std::memory_order_relaxed);  in push()
172         return my_first.load(std::memory_order_relaxed) == nullptr;  in empty()
180         __TBB_ASSERT( sizeof(*this)==max_nfs_size, nullptr );  in construct()
181         __TBB_ASSERT( !my_first.load(std::memory_order_relaxed), nullptr );  in construct()
182         __TBB_ASSERT( !my_last.load(std::memory_order_relaxed), nullptr );  in construct()
183         __TBB_ASSERT( !my_is_idle.load(std::memory_order_relaxed), nullptr );  in construct()
209     mail_inbox() : my_putter(nullptr) {}  in mail_inbox()
218         my_putter = nullptr;  in detach()