#11060: Failing tests on 32 bit platforms -------------------------------------+------------------------------------- Reporter: erikd | Owner: Type: bug | Status: new Priority: normal | Milestone: 8.0.1 Component: Test Suite | Version: 7.11 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: Other | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by bgamari): The relevant part of the expected output of this test prior to being mangled by the testsuite driver is, {{{#!hs T8274.$tcN :: TyCon [GblId[ReflectionId], Caf=NoCafRefs, Str=DmdType m, Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, WorkFree=True, Expandable=True, Guidance=IF_ARGS [] 10 50}] T8274.$tcN = TyCon 7479687563082171902## 17616649989360543185## T8274.$trModule }}} So, it appears that the difference here arises from the fact that something formatting a `Data.Typeable.Internal.TyCon` is including an extra `L` while formatting the `Word64#` fingerprints on 32-bit machines. Given that this isn't valid Haskell on 32- nor 64-bit machines, this should likely be fixed. However, I can't for the life of me figure out where this is happening. It would appear that the `Show TyCon` instance is defined in `libraries,base/GHC/Show.hs`, {{{#!hs instance Show TyCon where showsPrec p (TyCon _ _ _ tc_name) = showsPrec p tc_name }}} which clearly doesn't match the output we are seeing here. I've tried looking for `Outputable` instances but the only one I've been able to find is for `typecheck/TyCon.hs`. Perhaps this is being derived by `TcGenDeriv` but I've not seen any logic in there that might be adding this errant `L`. It's all quite perplexing. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11060#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler