Keep buffer-pool ownership, allocation, synchronization, and the Rust
pool's saturating accounting in their existing implementations. The C
wrapper still handles NULL, obtains sizeof(*bufPool), and queries the Rust
pool size; Rust now performs only the final size_t addition with wrapping
semantics. The sequence-pool sizing alias continues to call the same C
helper and therefore retains its behavior.
Test Plan:
- `cargo clippy --manifest-path rust/Cargo.toml --no-default-features
--features compression` (before and after formatting) -- passed
- The same clippy command with `--benches` and `--tests` -- passed
- `cargo +nightly fmt --manifest-path rust/Cargo.toml` -- passed
- `cargo test --manifest-path rust/Cargo.toml --no-default-features
--features compression zstdmt_compress` -- 29 passed
- `make -B -C lib -j2 lib` -- passed
- `make -C tests test-rust-lib-smoke` -- passed
- `tests/fuzzer -s4560 -t56 -i57 -v` -- 57 passed
- `make -C tests -j2 test-zstream` -- 84 named, 7,661, and 8,090
randomized tests passed
- `git diff --check` and `git diff --cached --check` -- passed
The zstream build still emits the pre-existing unterminated-string warning
at tests/zstreamtest.c:1899.
ddidderr
df95f5194d