250   struct BlockMeta {  struct in __anon6eae74d60211::BumpPointerAllocator
251     BlockMeta* Next;  argument
256   static constexpr size_t UsableAllocSize = AllocSize - sizeof(BlockMeta);
259   BlockMeta* BlockList = nullptr;
265     BlockList = new (NewMeta) BlockMeta{BlockList, 0};  in grow()
269     NBytes += sizeof(BlockMeta);  in allocateMassive()
270     BlockMeta* NewMeta = reinterpret_cast<BlockMeta*>(std::malloc(NBytes));  in allocateMassive()
273     BlockList->Next = new (NewMeta) BlockMeta{BlockList->Next, 0};  in allocateMassive()
279       : BlockList(new (InitialBuffer) BlockMeta{nullptr, 0}) {}  in BumpPointerAllocator()
295       BlockMeta* Tmp = BlockList;  in reset()
300     BlockList = new (InitialBuffer) BlockMeta{nullptr, 0};  in reset()