49     memory_header   *prev;  member
91                     (size_t) hdr, (size_t) hdr->prev, (size_t) hdr->next,  in debug_header()
148     if (hdr->prev != NULL && hdr->prev == hdr->next) {  in verify_header()
177     if (heap.first->prev != NULL) {  in verify_chain()
196         if (cur->prev != prv) {  in verify_chain()
313     new->prev = cur;  in buffer_alloc_calloc()
323         new->next->prev = new;  in buffer_alloc_calloc()
419     if (hdr->prev != NULL && hdr->prev->alloc == 0) {  in buffer_alloc_free()
423         hdr->prev->size += sizeof(memory_header) + hdr->size;  in buffer_alloc_free()
424         hdr->prev->next = hdr->next;  in buffer_alloc_free()
426         hdr = hdr->prev;  in buffer_alloc_free()
429             hdr->next->prev = hdr;  in buffer_alloc_free()
471             hdr->next->prev = hdr;  in buffer_alloc_free()