Hello Below it states
- Fixed a critical code generation regression where sub-word division produced incorrect results (#26711 </ghc/ghc/-/issues/26711>, #26668 (closed) </ghc/ghc/-/issues/26668>), similar to the bug fixed in 9.12.2 However when I test 26711 it on 9.12.3.20260311 ( 9.12.3.20260311) on my Apple Silicon Mac it is still broken, I've updated 26711. Maybe the above means that just 26668 is fixed but 26711 is not? On Fri, Mar 13, 2026 at 6:15 AM Zubin Duggal via ghc-devs < [email protected]> wrote: > The GHC developers are very pleased to announce the availability > of the release candidate for GHC 9.12.4. Binary distributions, source > distributions, and documentation are available at [downloads.haskell.org][] > and > via [GHCup](https://www.haskell.org/ghcup/). > > GHC 9.12.4 is a bug-fix release fixing many issues of a variety of > severities and scopes, including: > > * Fixed a critical code generation regression where sub-word division > produced > incorrect results (#26711, #26668), similar to the bug fixed in 9.12.2 > * Numerous fixes for register allocation bugs, preventing data corruption > when spilling and reloading registers > (#26411, #26526, #26537, #26542, #26550) > * Fixes for several compiler crashes, including issues with > CSE (#25468), SetLevels (#26681), > implicit parameters (#26451), and the type-class specialiser (#26682) > * Fixed cast worker/wrapper incorrectly firing on INLINE functions (#26903) > * Fixed LLVM backend miscompilation of bit manipulation operations > (#20645, #26065, #26109) > * Fixed associated type family and data family instance changes not > triggering > recompilation (#26183, #26705) > * Fixed negative type literals causing the compiler to hang (#26861) > * Improvements to determinism of compiler output (#26846, #26858) > * Fixes for eventlog shutdown deadlocks (#26573) > and lost wakeups in the RTS (#26324) > * Fixed split sections support on Windows (#26696, #26494) and the LLVM > backend (#26770) > * Fixes for the bytecode compiler, PPC native code generator, and Wasm > backend > * The runtime linker now supports COMMON symbols (#6107) > * Improved backtrace support: backtraces for `error` exceptions are now > evaluated at throw time > * `NamedDefaults` now correctly requires the class to be standard or have > an > in-scope default declaration, and handles poly-kinded classes (#25775, > #25778, #25882) > * ... and many more > > A full accounting of these fixes can be found in the > [release notes][]. As always, GHC's release status, including planned > future > releases, can be found on the GHC Wiki [status][]. > > This release candidate will have a two-week testing period. If all goes > well > the final release will be available the week of 26 March 2026. > > GHC development is sponsored by: > > * [Juspay](https://juspay.com/) > * [QBayLogic](https://qbaylogic.com/) > * [Channable](https://www.channable.com/) > * [Haskell Foundation](https://haskell.foundation/) > * [Serokell](https://serokell.io/) > * [Well-Typed](https://well-typed.com/) > * [Tweag](https://www.tweag.io/) > * [Dotcom-Monitor](https://www.dotcom-monitor.com/) > * [LoadView](https://www.loadview-testing.com/) > * [Web Hosting Buddy](https://webhostingbuddy.com/) > * [Find My Electric](https://www.findmyelectric.com/) > * [Standard Chartered](https://www.sc.com) > * [UpCloud](https://upcloud.com) > * [Mercury](https://mercury.com) > > We would like to thank these sponsors and other anonymous contributors > whose on-going financial and in-kind support has facilitated GHC > maintenance > and release management over the years. Finally, this release would not have > been possible without the hundreds of open-source contributors whose work > comprise this release. > > As always, do give this release a try and open a [ticket][] if you see > anything amiss. > > [release notes]: > https://gitlab.haskell.org/ghc/ghc/-/blob/ghc-9.12/docs/users_guide/9.12.4-notes.rst?ref_type=heads&plain=1 > [status]: https://gitlab.haskell.org/ghc/ghc/-/wikis/GHC-status > [downloads.haskell.org]: https://downloads.haskell.org/ghc/9.12.4-rc1 > [ticket]: https://gitlab.haskell.org/ghc/ghc/-/issues/new > _______________________________________________ > ghc-devs mailing list -- [email protected] > To unsubscribe send an email to [email protected] >
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