53   constexpr auto max_align = std::numeric_limits<unsigned char>::max() + 1;  in max_alignment()
128   if (const auto ptr = util::exchange(*in_ptr, nullptr)) {  in delete_ptr_()
219   constexpr auto max_align = util::to_underlying(AllocationHeader::max_alignment());  in valid_alignment_()
220   const auto     align     = util::to_underlying(in_align);  in valid_alignment_()
267     const auto aligned_ptr     = reinterpret_cast<unsigned char *>(user_ptr);  in extract_header_()
268     const auto buffer_zone_end = aligned_ptr - AllocationHeader::buffer_zone_size();  in extract_header_()
273       const auto alignment_offset = *buffer_zone_end;  in extract_header_()
299   constexpr auto header_size = AllocationHeader::header_size();  in allocate_ptr_()
300   const auto     total_size  = total_size_(size, align);  in allocate_ptr_()
301   const auto     size_before = total_size - header_size;  in allocate_ptr_()
302   auto           usable_size = size_before;  in allocate_ptr_()
338     constexpr auto max_align        = util::to_underlying(AllocationHeader::max_alignment());  in allocate_ptr_()
339     const auto     alignment_offset = size_before - usable_size;  in allocate_ptr_()
344       const auto computed_aligned_ptr = base_ptr + header_size + alignment_offset;  in allocate_ptr_()
435     const auto align_it = find_align_(align);  in try_allocate()
438       auto     &&size_map = align_it->second;  in try_allocate()
439       const auto size_it  = size_map.find(size);  in try_allocate()
442         auto &&ptr_list = size_it->second;  in try_allocate()
504   if (auto ptr = util::exchange(*in_ptr, nullptr)) {  in deallocate()
513       auto it = find_align_(align);  in deallocate()