Panic in ghc-9.4-alpha2 building primitive-unlifted
[ 4 of 19] Compiling Data.Primitive.Unlifted.MVar.Primops ( src/Data/Primitive/Unlifted/MVar/Primops.hs, /home/doug/code/haskell-language-server/dist-newstyle/build/x86_64-linux/ghc-9.4.0.20220523/primitive-unlifted-1.0.0.0/build/Data/Primitive/Unlifted/MVar/Primops.o, /home/doug/code/haskell-language-server/dist-newstyle/build/x86_64-linux/ghc-9.4.0.20220523/primitive-unlifted-1.0.0.0/build/Data/Primitive/Unlifted/MVar/Primops.dyn_o )
<no location info>: error:
panic! (the 'impossible' happened)
GHC version 9.4.0.20220523:
findSlot
Can't find slot
[PtrUnliftedSlot]
[PtrLiftedSlot]
Call stack:
CallStack (from HasCallStack):
callStackDoc, called at compiler/GHC/Utils/Panic.hs:182:37 in ghc:GHC.Utils.Panic
pprPanic, called at compiler/GHC/Types/RepType.hs:266:9 in ghc:GHC.Types.RepType
Please report this as a GHC bug: https://www.haskell.org/ghc/reportabug
https://github.com/haskell-primitive/primitive-unlifted
commit: 9b16b79318cbe294d3fdf730b8bd0e4191bf422e