2.5. Version 9.2.5¶
The significant changes to the various parts of the compiler are listed in the following sections.
The LLVM backend of this release is to be used with LLVM
9, 10, 11, or 12.
2.5.1. Compiler¶
- Fix a number of issues with the simplifier leading to core lint errors and suboptimal performance (#21694, #21755, #22114).
- Fix a sign extension bug resulting in incorrent runtime results on the native aarch64 backend (#22282).
- Improve determinism by not inclusing build directories in interface files (#22162).
- Fix a code generation panic when using SIMD types with unboxed sums (#22187).
- Fix a code generation bug with the native code generator on aarch64 darwin leading to runtime segmentation faults due to an incorrect ABI (#21964)
2.5.2. Runtime system¶
- Fix a bug where attempting to clear the card table of a zero-length array resulted in an integer underflow (#21962).
2.5.3. Core libraries¶
- Bump
baseto 4.16.3.0. - Bump
processto 1.6.16.0 - base: Fix races in the IOManager to do with the
setNumCapabilitiesandcloseFdWithfunctions (#21651)
2.5.4. Included libraries¶
The package database provided with this distribution also contains a number of packages other than GHC itself. See the changelogs provided with these packages for further change information.
| Package | Version | Reason for inclusion |
|---|---|---|
| ghc | 9.2.7 | The compiler itself |
| Cabal | 3.6.3.0 | Dependency of ghc-pkg utility |
| Win32 | 2.12.0.1 | Dependency of ghc library |
| array | 0.5.4.0 | Dependency of ghc library |
| base | 4.16.4.0 | Core library |
| binary | 0.8.9.0 | Dependency of ghc library |
| bytestring | 0.11.4.0 | Dependency of ghc library |
| containers | 0.6.5.1 | Dependency of ghc library |
| deepseq | 1.4.6.1 | Dependency of ghc library |
| directory | 1.3.6.2 | Dependency of ghc library |
| exceptions | 0.10.4 | Dependency of ghc and haskeline library |
| filepath | 1.4.2.2 | Dependency of ghc library |
| ghc-boot-th | 9.2.7 | Internal compiler library |
| ghc-boot | 9.2.7 | Internal compiler library |
| ghc-compact | 0.1.0.0 | Core library |
| ghc-heap | 9.2.7 | GHC heap-walking library |
| ghc-prim | 0.8.0 | Core library |
| ghci | 9.2.7 | The REPL interface |
| haskeline | 0.8.2 | Dependency of ghci executable |
| hpc | 0.6.1.0 | Dependency of hpc executable |
| integer-gmp | 1.1 | Core library |
| libiserv | 9.2.7 | Internal compiler library |
| mtl | 2.2.2 | Dependency of Cabal library |
| parsec | 3.1.15.0 | Dependency of Cabal library |
| pretty | 1.1.3.6 | Dependency of ghc library |
| process | 1.6.16.0 | Dependency of ghc library |
| stm | 2.5.0.2 | Dependency of haskeline library |
| template-haskell | 2.18.0.0 | Core library |
| terminfo | 0.4.1.5 | Dependency of haskeline library |
| text | 1.2.5.0 | Dependency of Cabal library |
| time | 1.11.1.1 | Dependency of ghc library |
| transformers | 0.5.6.2 | Dependency of ghc library |
| unix | 2.7.2.2 | Dependency of ghc library |
| xhtml | 3000.2.2.1 | Dependency of haddock executable |