nameModule panic with byte code interpreter, multiple home units, -fwrite-if-simplified-core
Result size of CorePrep
= {terms: 9,991, types: 19,028, coercions: 1,577, joins: 0/1,897}
!!! CorePrep [Control.Monad.Catch]: finished in 7.25 milliseconds, allocated 13.208 megabytes
*** Stg2Stg:
*** GHC.StgToByteCode [Control.Monad.Catch]:
!!! GHC.StgToByteCode [Control.Monad.Catch]: finished in 19.71 milliseconds, allocated 46.775 megabytes
panic! (the 'impossible' happened)
GHC version 9.6.0.20230201:
nameModule
internal $cget7_i13nY
Call stack:
CallStack (from HasCallStack):
callStackDoc, called at compiler/GHC/Utils/Panic.hs:189:37 in ghc:GHC.Utils.Panic
pprPanic, called at compiler/GHC/Types/Name.hs:329:3 in ghc:GHC.Types.Name
CallStack (from HasCallStack):
panic, called at compiler/GHC/Utils/Error.hs:454:29 in ghc:GHC.Utils.Error
The reproduction instructions are a bit involved at the moment but I write this down in a ticket in case other users are reporting it.