Re: [GHC] #4012: Compilation results are not deterministic

#4012: Compilation results are not deterministic -------------------------------------+------------------------------------- Reporter: kili | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.10.1 Component: Compiler | Version: 6.12.2 Resolution: | Keywords: Operating System: | Architecture: Unknown/Multiple Unknown/Multiple | Difficulty: Difficult (2-5 Type of failure: Other | days) Test Case: | Blocked By: Blocking: | Related Tickets: Differential Revisions: | -------------------------------------+------------------------------------- Comment (by Joachim Breitner ): In [changeset:"a477e8118137b7483d0a7680c1fd337a007a023b/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="a477e8118137b7483d0a7680c1fd337a007a023b" Avoid printing uniques in specialization rules Akio found an avoidable cause of non-determinisim: The names of RULES generated by Specialise had uniques in them: "SPEC $cshowsPrec_a2QX @ [GHC.Types.Char]" [ALWAYS] forall ... By using showSDocForUser instead of showSDocDump when building the rule name, this is avoided: "SPEC $cshowsPrec @ [Char]" [ALWAYS] forall ... See #4012, comments 61ff. }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/4012#comment:67 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler