mirror of
https://github.com/bitcoin/bitcoin.git
synced 2025-07-08 17:30:36 +02:00
459baa1756
e10e1e8db0Restrict lifetime of ReserveDestination to CWallet::CreateTransaction (Gregory Sanders)d9ff862f2dCreateTransaction calls KeepDestination on ReserveDestination before success (Gregory Sanders) Pull request description: The typical usage pattern of `ReserveDestination` is to explicitly `KeepDestination`, or `ReturnDestination` when it's detected it will not be used. Implementers such as myself may fail to complete this pattern, and could result in key re-use: https://github.com/bitcoin/bitcoin/pull/15557#discussion_r271956393 Since ReserveDestination is currently only used directly in the `CreateTransaction`/`CommitTransaction` flow(or fee bumping where it's just used in `CreateTransaction`), I instead make the assumption that if a transaction is returned by `CreateTransaction` it's highly likely that it will be accepted by the caller, and the `ReserveDestination` kept. This simplifies the API as well. There are very few cases where this would not be the case which may result in keys being burned. Those failure cases appear to be: `CommitTransaction` failing to get the transaction into the mempool Belt and suspenders check in `WalletModel::prepareTransaction` Alternative to https://github.com/bitcoin/bitcoin/pull/15796 ACKs for top commit: achow101: ACKe10e1e8db0Reviewed the diff stevenroose: utACKe10e1e8db0meshcollider: utACKe10e1e8db0Tree-SHA512: 78d047a00f39ab41cfa297052cc1e9c224d5f47d3d2299face650d71827635de077ac33fb4ab9f7dc6fc5a27f4a68415a1bc9ca33a3cb09a78f4f15b2a48411b