Revisions of rust
- Update to 1.24.0 - Language changes: + External `sysv64` ffi is now available. eg. `extern "sysv64" fn foo () {}` - Compiler changes: + rustc now uses 16 codegen units by default for release builds. For the fastest builds, utilize `codegen-units=1`. - Libraries: + `str::find::<char>` now uses memchr. This should lead to a 10x improvement in performance in the majority of cases. + `time::{SystemTime, Instant}` now implement `Hash`. + impl `From<bool>` for `AtomicBool` + impl `From<{CString, &CStr}>` for `{Arc<CStr>, Rc<CStr>}` + impl `From<{OsString, &OsStr}>` for `{Arc<OsStr>, Rc<OsStr>}` + impl `From<{PathBuf, &Path}>` for `{Arc<Path>, Rc<Path>}` + float::from_bits now just uses transmute. This provides some optimisations from LLVM. + Copied `AsciiExt` methods onto `char` + Remove `T: Sized` requirement on `ptr::is_null()` + impl `From<RecvError>` for `{TryRecvError, RecvTimeoutError}` + Optimised `f32::{min, max}` to generate more efficient x86 assembly + `[u8]::contains` now uses memchr which provides a 3x speed improvement - Compatibility Notes: + Floating point types `Debug` impl now always prints a decimal point. + `Ipv6Addr` now rejects superfluous `::`'s in IPv6 addresses This is in accordance with IETF RFC 4291 ยง2.2. + Unwinding will no longer go past FFI boundaries, and will instead abort. + `Formatter::flags` method is now deprecated. The `sign_plus`, `sign_minus`, `alternate`, and `sign_aware_zero_pad` should be used instead. + Leading zeros in tuple struct members is now an error + `column!()` macro is one-based instead of zero-based + `fmt::Arguments` can no longer be shared across threads + Access to `#[repr(packed)]` struct fields is now unsafe + Cargo sets a different working directory for the compiler
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