Make m_mempool optional in CChainState (!22415) · Merge requests · bitcoin / bitcoin · GitLab

Placeholder jamesob requested to merge github/fork/jamesob/2021-07-mempool-ptr into master Jul 07, 2021

Make CChainState::m_mempool optional by making it a pointer instead of a reference. This will allow a simplification to assumeutxo semantics (see https://github.com/bitcoin/bitcoin/pull/15606#pullrequestreview-692965905) and help facilitate the -nomempool option.