Compilation panic! (the 'impossible' happened)
See attached zip for entire project causing error. I'd imagine it's pretty reproducible, just call stack build. I'm running standard lts-12.8 and it's just two small files that don't do anything yet! Also included is panicmessage.txt showing the exact output, crucially:
ghc: panic! (the 'impossible' happened)
(GHC version 8.4.3 for x86_64-unknown-linux):
piResultTy
*
v_XabT
Call stack:
CallStack (from HasCallStack):
callStackDoc, called at compiler/utils/Outputable.hs:1150:37 in ghc:Outputable
pprPanic, called at compiler/types/Type.hs:947:35 in ghc:Type
Oh and sysinfo
uname -a
Linux @@@ 4.16.11-100.fc26.x86_64 #1 SMP Tue May 22 20:02:12 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
Trac metadata
Trac field | Value |
---|---|
Version | 8.4.3 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | Linux |
Architecture | x86_64 (amd64) |