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af0ee28eb6refactor: use _MiB consistently for Mebibyte conversions (Lőrinc)b3edd30aa2util: add _GiB for Gibibyte conversions (Lőrinc) Pull request description: ### Problem Byte-size conversions in the codebase currently show up in many equivalent formats (multiplication/division chains, shifts, hex/binary literals), which creates a maintenance burden and makes review error-prone - especially considering the architectural differences of `size_t`. Inspired by https://github.com/bitcoin/bitcoin/pull/34305#discussion_r2734720002, it seemed appropriate to unify `Mebibyte` usage across the codebase and add `Gibibyte` support with 32/64 bit `size_t` validation. ### Fix This PR refactors those call sites to use `""_MiB` (existing) and `""_GiB` (new), and adds the encountered value/pattern replacements to unit tests to make review straightforward, and to ensure the conversions remain valid. The literals are overflow-checked when converting to `size_t`, and unit tests cover the 32-bit boundary cases. Concretely, it replaces patterns such as: * `1024*1024`, `1<<20`, `0x100000`, `1048576`, `/ 1024 / 1024`, `* (1.0 / 1024 / 1024)` → `1_MiB` or `double(1_MiB)` * `1024*1024*1024`, `1<<30`, `0x40000000`, `1024_MiB`, `>> 30` → `1_GiB` (added unit tests for each replacement category to ease review) Additionally, declarations whose initializer reads a `_MiB`/`_GiB` literal are switched to braced initialization so a future oversized value is rejected at compile time through the narrowing check instead of silently truncating. ### Note In the few places where arithmetic involves signed values, the result is identical to the previous code assuming those quantities never become negative. ACKs for top commit: achow101: ACKaf0ee28eb6janb84: ACKaf0ee28eb6maflcko: review ACKaf0ee28eb6🖍 hodlinator: re-ACKaf0ee28eb6Tree-SHA512: 55286ce3f833f88335394a74e9e0b95c7d023e5cdc9ded40accbbbcd870101e4dcc05926865d6bef4c1be1ebd648aa3fdf947ef9575633ccfe56691f145d7a2d
Bitcoin Core integration/staging tree
For an immediately usable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/.
What is Bitcoin Core?
Bitcoin Core connects to the Bitcoin peer-to-peer network to download and fully validate blocks and transactions. It also includes a wallet and graphical user interface, which can be optionally built.
Further information about Bitcoin Core is available in the doc folder.
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Development Process
The master branch is regularly built (see doc/build-*.md for instructions) and tested, but it is not guaranteed to be
completely stable. Tags are created
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The contribution workflow is described in CONTRIBUTING.md and useful hints for developers can be found in doc/developer-notes.md.
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There are also regression and integration tests, written
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Translations
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Important: We do not accept translation changes as GitHub pull requests because the next pull from Transifex would automatically overwrite them again.