2.5. Version 9.6.5¶
The significant changes to the various parts of the compiler are listed below. See the migration guide on the GHC Wiki for specific guidance on migrating programs to this release.
The LLVM backend of this release is to be used with LLVM
11, 12, 13, 14 or 15.
2.5.1. Significant Changes¶
Issues fixed in this release include:
2.5.1.1. Compiler¶
- Disable
-fasm-shortcuttingwith-O2as it leads to unsound optimisations (:ghc-ticket:`24462). - Fix a typechecker bug resulting in
TYPEandCONSTRAINTbeing apart (#24279). - Fix a bug resulting in incorrect runtime results due to a botched simplifier pass (#24295).
- Assign correct source spans to nested documentation comments in the AST (#24378).
- Fix a bug causing suboptimal error messages for certain invalid cyclic module graphs with hs-boot files (#24196, #24275).
- Fix a bug resulting in infix
(~)and(@)operators not being usable in TH quotes (#23748). - Fix a bug arising from incorrect parsing of paths containing spaces in the settings file (#24265).
- Allow special pragmas to desugar correctly in a few more cases (#24370).
2.5.1.2. Runtime system¶
2.5.1.3. Build system and packaging¶
- Fix a bug resulting in the distributed
hsc2hswrapper using flags from the compiler build environment (#24050). - Better compatibility for newer alex versions in the configure script (#24302).
- Handle autotools adding the
-stdflag to theCC/CXXvariables (#24324). - Fix a typo in the configure script resulting in the target for the linker being set incorrectly when configuring a cross-compiler (#24414).
- Do not override existing linker flags in
FP_LD_NO_FIXUP_CHAINS. - Ensure the
genapplyprogram is built with the write constants when cross compiling (#24347). - Ensure we take
LDFLAGSinto account when configuring a linker (#24565). - Fix a segfault with the non-moving GC (#24492).
2.5.1.4. Core libraries¶
- Bump
baseto 4.18.2.1 - Bump
filepathto 1.4.300.1 - Bump
directoryto 1.3.8.4 - Bump
Cabalto 3.10.3.0 - Bump
processto 1.6.19.0 - Bump
libffi-tarballsto 3.4.6
2.5.1.5. 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 | 9.6.5 | The compiler itself |
| Cabal-syntax | 3.10.3.0 | Dependency of ghc-pkg utility |
| Cabal | 3.10.3.0 | Dependency of ghc-pkg utility |
| Win32 | 2.13.3.0 | Dependency of ghc library |
| array | 0.5.6.0 | Dependency of ghc library |
| base | 4.18.2.1 | Core library |
| binary | 0.8.9.1 | Dependency of ghc library |
| bytestring | 0.11.5.3 | Dependency of ghc library |
| containers | 0.6.7 | Dependency of ghc library |
| deepseq | 1.4.8.1 | Dependency of ghc library |
| directory | 1.3.8.4 | Dependency of ghc library |
| exceptions | 0.10.7 | Dependency of ghc and haskeline library |
| filepath | 1.4.300.1 | Dependency of ghc library |
| ghc-boot-th | 9.6.5 | Internal compiler library |
| ghc-boot | 9.6.5 | Internal compiler library |
| ghc-compact | 0.1.0.0 | Core library |
| ghc-heap | 9.6.5 | GHC heap-walking library |
| ghc-prim | 0.10.0 | Core library |
| ghci | 9.6.5 | The REPL interface |
| haskeline | 0.8.2.1 | Dependency of ghci executable |
| hpc | 0.6.2.0 | Dependency of hpc executable |
| integer-gmp | 1.1 | Core library |
| libiserv | 9.6.5 | Internal compiler library |
| mtl | 2.3.1 | Dependency of Cabal library |
| parsec | 3.1.16.1 | Dependency of Cabal library |
| pretty | 1.1.3.6 | Dependency of ghc library |
| process | 1.6.19.0 | Dependency of ghc library |
| stm | 2.5.1.0 | Dependency of haskeline library |
| template-haskell | 2.20.0.0 | Core library |
| terminfo | 0.4.1.6 | Dependency of haskeline library |
| text | 2.0.2 | Dependency of Cabal library |
| time | 1.12.2 | Dependency of ghc library |
| transformers | 0.6.1.0 | Dependency of ghc library |
| unix | 2.8.4.0 | Dependency of ghc library |
| xhtml | 3000.2.2.1 | Dependency of haddock executable |