Files
bitcoin/src
MarcoFalke 7317e14a44 Merge bitcoin/bitcoin#22263: refactor: wrap CCoinsViewCursor in unique_ptr
7ad414f4bf doc: add comment about CCoinsViewDBCursor constructor (James O'Beirne)
0f8a5a4dd5 move-only(ish): don't expose CCoinsViewDBCursor (James O'Beirne)
615c1adfb0 refactor: wrap CCoinsViewCursor in unique_ptr (James O'Beirne)

Pull request description:

  I tripped over this one for a few hours at the beginning of the week, so I've sort of got a personal vendetta against `CCoinsView::Cursor()` returning a raw pointer.

  Specifically in the case of CCoinsViewDB, if a raw cursor is allocated and not freed, a cryptic leveldb assertion failure occurs on CCoinsViewDB destruction (`Assertion 'dummy_versions_.next_ == &dummy_versions_' failed.`).

  This is a pretty simple change.

  Related to: https://github.com/bitcoin/bitcoin/issues/21766
  See also: https://github.com/google/leveldb/issues/142#issuecomment-414418135

ACKs for top commit:
  MarcoFalke:
    review ACK 7ad414f4bf 🔎
  jonatack:
    re-ACK 7ad414f4bf modulo suggestion
  ryanofsky:
    Code review ACK 7ad414f4bf. Two new commits look good and thanks for clarifying constructor comment

Tree-SHA512: 6471d03e2de674d84b1ea0d31e25f433d52aa1aa4996f7b4aab1bd02b6bc340b15e64cc8ea07bbefefa3b5da35384ca5400cc230434e787c30931b8574c672f9
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