99     : __cbeg_(nullptr),  in __libcpp_db()
100       __cend_(nullptr),  in __libcpp_db()
102       __ibeg_(nullptr),  in __libcpp_db()
103       __iend_(nullptr),  in __libcpp_db()
114             if (*p != nullptr)  in ~__libcpp_db()
126             if (*p != nullptr)  in ~__libcpp_db()
143     _LIBCPP_ASSERT(i != nullptr, "iterator not found in debug database.");  in __find_c_from_i()
144     return i->__c_ != nullptr ? i->__c_->__c_ : nullptr;  in __find_c_from_i()
157     if (c == nullptr)  in __insert_ic()
162         if (c == nullptr)  in __insert_ic()
180         if (cbeg == nullptr)  in __insert_c()
186             while (q != nullptr)  in __insert_c()
202     if (buf == nullptr)  in __insert_c()
219         if (p != nullptr)  in __erase_i()
221             __i_node* q = nullptr;  in __erase_i()
226                 if (p == nullptr)  in __erase_i()
229             if (q == nullptr)  in __erase_i()
235             if (c != nullptr)  in __erase_i()
252         if (p == nullptr)  in __invalidate_all()
257             if (p == nullptr)  in __invalidate_all()
263             (*p->end_)->__c_ = nullptr;  in __invalidate_all()
279         return nullptr;  in __find_c_and_lock()
283     if (p == nullptr)  in __find_c_and_lock()
288         return nullptr;  in __find_c_and_lock()
293         if (p == nullptr)  in __find_c_and_lock()
298             return nullptr;  in __find_c_and_lock()
309     _LIBCPP_ASSERT(p != nullptr, "debug mode internal logic error __find_c A");  in __find_c()
313         _LIBCPP_ASSERT(p != nullptr, "debug mode internal logic error __find_c B");  in __find_c()
336         if (p == nullptr)  in __erase_c()
338         __c_node* q = nullptr;  in __erase_c()
339         _LIBCPP_ASSERT(p != nullptr, "debug mode internal logic error __erase_c A");  in __erase_c()
344             if (p == nullptr)  in __erase_c()
346             _LIBCPP_ASSERT(p != nullptr, "debug mode internal logic error __erase_c B");  in __erase_c()
348         if (q == nullptr)  in __erase_c()
355             (*p->end_)->__c_ = nullptr;  in __erase_c()
371     __c_node* c0 = i0 != nullptr ? i0->__c_ : nullptr;  in __iterator_copy()
372     if (i == nullptr && i0 != nullptr)  in __iterator_copy()
374     __c_node* c = i != nullptr ? i->__c_ : nullptr;  in __iterator_copy()
377         if (c != nullptr)  in __iterator_copy()
379         if (i != nullptr)  in __iterator_copy()
381             i->__c_ = nullptr;  in __iterator_copy()
382             if (c0 != nullptr)  in __iterator_copy()
398     return i != nullptr && i->__c_ != nullptr && i->__c_->__dereferenceable(__i);  in __dereferenceable()
408     return i != nullptr && i->__c_ != nullptr && i->__c_->__decrementable(__i);  in __decrementable()
418     return i != nullptr && i->__c_ != nullptr && i->__c_->__addable(__i, __n);  in __addable()
428     return i != nullptr && i->__c_ != nullptr && i->__c_->__subscriptable(__i, __n);  in __subscriptable()
439     __c_node* ci = i != nullptr ? i->__c_ : nullptr;  in __less_than_comparable()
440     __c_node* cj = j != nullptr ? j->__c_ : nullptr;  in __less_than_comparable()
452     _LIBCPP_ASSERT(p1 != nullptr, "debug mode internal logic error swap A");  in swap()
456         _LIBCPP_ASSERT(p1 != nullptr, "debug mode internal logic error swap B");  in swap()
460     _LIBCPP_ASSERT(p2 != nullptr, "debug mode internal logic error swap C");  in swap()
464         _LIBCPP_ASSERT(p2 != nullptr, "debug mode internal logic error swap D");  in swap()
494         if (beg == nullptr)  in __add()
517         if (ibeg == nullptr)  in __insert_iterator()
523             while (q != nullptr)  in __insert_iterator()
540     if (r == nullptr)  in __insert_iterator()
543     ::new(r) __i_node(__i, p, nullptr);  in __insert_iterator()
552     __i_node* r = nullptr;  in __find_iterator()
556         for (__i_node* nd = __ibeg_[h]; nd != nullptr; nd = nd->__next_)  in __find_iterator()