- update to 9.6.4
* Fix a code generator bug on AArch64 platforms resulting in invalid conditional jumps .
* Fix a simplifier bug that may cause segfaults and core lint failures due to incorrect handling of join points .
* Ensure unconstrained instance dictionaries get IPE info .
* Fix a bug where we could silently truncate 64 bit values to 32 bit on 32 bit architectures.
* Fix a GHCi bug where a failure in the :add command would cause the process to exit .
* Fix a bug causing suboptimal error messages for certain invalid cyclic module graphs with hs-boot files .
* Fix a bug causing compiler panics with certain package databases involving unusable units and module reexports
* Fix some memory leaks in GHCi that manifest on reloads
* Fix a bug leading to some template haskell splices failing on being reloaded into GHCi due to not clearing the interactive context properly .
* Fix a type checker crash on certain programs involving implicitly scoped type variables .
* Fix a bug where certain warning flags were not recognised .
* Fix an incorrect assertion in the simplifier .
* Align objects in the data section properly when using the LLVM backend .
* Ensure concurrent thunk update is sound .
* Ensure the listAllBlocks function takes the non-moving heap into account .
* Ensure the non-moving GC is not running when pausing
* Fix some non-moving loops and bugs on Windows and LLP64 platforms
* Fix a bug where certain programs could have incorrect async exception masking .
* Ensure we respect maximum event length and don’t overflow into program memory .
* Ensure we use the right linker flags on AArch64 darwin
* Fix a bug where -DNOSMP wasn’t being passed to the C compiler even if the target doesn’t support SMP .
* Ensure we use the right otool and install_name_tool on Darwin .
* Fix a bug in ghc-bignum where usage of bigNatIsPowerOf2 might result in out of bounds access . (forwarded request 1150196 from mimi_vx)