159     assert(!pinned_);  in PinSlice()
160     pinned_ = true;  in PinSlice()
164     assert(pinned_);  in PinSlice()
168     assert(!pinned_);  in PinSlice()
169     pinned_ = true;  in PinSlice()
173     assert(pinned_);  in PinSlice()
177     assert(!pinned_);  in PinSelf()
181     assert(!pinned_);  in PinSelf()
185     assert(!pinned_);  in PinSelf()
188     assert(!pinned_);  in PinSelf()
193     if (pinned_) {  in remove_suffix()
203     if (pinned_) {  in remove_prefix()
214     pinned_ = false;  in Reset()
220   inline bool IsPinned() const { return pinned_; }  in IsPinned()
226   bool pinned_ = false;  variable