December 2013 - ghc-tickets

[GHC] #8364: equip GHC with an accurate internal model of floating point
by GHC 07 Oct '15

07 Oct '15

#8364: equip GHC with an accurate internal model of floating point ----------------------------------------------+---------------------------- Reporter: carter | Owner: Type: feature request | Status: new Priority: high | Milestone: 7.10.1 Component: Compiler | Version: 7.6.3 Keywords: | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Project (more than a week) | Type of failure: Blocked By: | None/Unknown Related Tickets: | Test Case: | Blocking: ----------------------------------------------+---------------------------- currently there really isn't a systematic / portable story for doing compile time reduction / evaluation for floating point numbers. there are some folks in the larger haskell community who are working on high precision soft float implementations / modelling. Once that work becomes available, might be worth exploring having something like that for doing controlled high precision evaluation of intermediate expressions in ghc proper. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8364> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8335: Create more specialized entries to GC
by GHC 06 Oct '15

06 Oct '15

#8335: Create more specialized entries to GC ------------------------------------+------------------------------------- Reporter: jstolarek | Owner: Type: task | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.7 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- Consider this Cmm code (taken from #8326): {{{ {offset cFd: // stack check if ((Sp + -16) < SpLim) goto cFr; else goto cFs; cFr: // not enough place on the stack, call GC R2 = R2; R1 = A.f_closure; call (stg_gc_fun)(R2, R1) args: 8, res: 0, upd: 8; cFs: // scrutinize (x ># 0#) _sEU::I64 = R2; _sEV::I64 = %MO_S_Gt_W64(R2, 0); if (_sEV::I64 != 1) goto cFg; else goto cFo; cFg: // False branch Hp = Hp + 16; if (Hp > HpLim) goto cFy; else goto cFx; cFy: // not enough heap, call GC HpAlloc = 16; I64[Sp - 16] = cFf; R1 = _sEV::I64; I64[Sp - 8] = _sEU::I64; Sp = Sp - 16; call stg_gc_unbx_r1(R1) returns to cFf, args: 8, res: 8, upd: 8; cFf: // re-do the False branch _sEU::I64 = I64[Sp + 8]; Sp = Sp + 16; _sEV::I64 = R1; goto cFg; cFx: // RHS of False branch I64[Hp - 8] = GHC.Types.I#_con_info; I64[Hp] = -_sEU::I64; R1 = Hp - 7; call (P64[Sp])(R1) args: 8, res: 0, upd: 8; cFo: // True branch Hp = Hp + 16; if (Hp > HpLim) goto cFv; else goto cFu; cFv: // not enough heap, call GC HpAlloc = 16; I64[Sp - 16] = cFn; R1 = _sEV::I64; I64[Sp - 8] = _sEU::I64; Sp = Sp - 16; call stg_gc_unbx_r1(R1) returns to cFn, args: 8, res: 8, upd: 8; cFn: // re-do the True branch _sEU::I64 = I64[Sp + 8]; Sp = Sp + 16; _sEV::I64 = R1; goto cFo; cFu: // RHS of True branch I64[Hp - 8] = GHC.Types.I#_con_info; I64[Hp] = _sEU::I64; R1 = Hp - 7; call (P64[Sp])(R1) args: 8, res: 0, upd: 8; } }}} We perform two different calls to garbage collection here. Calling GC after making initial stack check obviously can't use any stack, so we pass parameter to GC in regsiters: {{{ R2 = R2; R1 = A.f_closure; call (stg_gc_fun)(R2, R1) args: 8, res: 0, upd: 8; }}} But in the calls that are made later on inside the function we do put some parameters on the stack, thus increasing stack usage: {{{ cFv: // not enough heap, call GC HpAlloc = 16; I64[Sp - 16] = cFn; R1 = _sEV::I64; I64[Sp - 8] = _sEU::I64; Sp = Sp - 16; call stg_gc_unbx_r1(R1) returns to cFn, args: 8, res: 8, upd: 8; }}} If we had more specialized entries to GC that would allow us to pass parameters in registers (or in some fixed memory location associated with TCO?) then this function would not require any stack at all. Note that there is a separate issue here - `_sEV` variable is in fact dead and should be eliminated (see #8327). -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8335> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8213: Bad error message when using lazy IO to read from closed handle
by GHC 22 Sep '15

22 Sep '15

#8213: Bad error message when using lazy IO to read from closed handle ------------------------------------+-------------------------------------- Reporter: nh2 | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Runtime System | Version: 7.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: Documentation bug Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+-------------------------------------- Today I accidentally wrote this code: {{{ filesEqual :: FilePath -> FilePath -> IO Bool filesEqual f1 f2 = do equal <- withBinaryFile f1 ReadMode $ \f1 -> withBinaryFile f2 ReadMode $ \f2 -> c1 <- BSL.hGetContents h1 c2 <- BSL.hGetContents h2 return (c1 == c2) return $! equal }}} The problem is that I should have done the forcing before the files are closed: {{{ return $! (c1 == c2) }}} I got the incredibly unhelpful error message {{{ myprogram: myfile.txt: illegal operation }}} It took me 2 hours and strace to find out what was going on, especially because around every file open() there are multiple things that map top IllegalOperation (e.g. the ENOTTY from the ioctl that checks whether the device is a TTY). Can we give a better error message here, at least mentioning that the problem has to do with closed (and GC'd) handles? -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8213> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8423: contraint solver doesn't reduce reducible closed type family expressions (even with undecidable instances!)
by GHC 18 Sep '15

18 Sep '15

#8423: contraint solver doesn't reduce reducible closed type family expressions (even with undecidable instances!) -------------------------------------------+------------------------------- Reporter: carter | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.8.1 Component: Compiler (Type checker) | Version: 7.7 Keywords: | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Unknown | Type of failure: Blocked By: | None/Unknown Related Tickets: | Test Case: | Blocking: -------------------------------------------+------------------------------- attached is an example where the type checker isn't "computing" in the closed type families, or at least doing a one step reduction. this makes sense, given that type families only compute when instantiated... But if we could partially evaluate closed type families (or at least do a one step reduction), the attached example code would type check! interestingly, depending on what order the cases for the PSum are written, the type error changes! I guess I want an "eager matching" closed type family, that when partially instantiated will patch on the first pattern it satisfies, to complement ordered type families. attached is a toy example where I otherwise need an unsafeCoerce to make things type check -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8423> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8168: ghc "Simplifier ticks exhausted" "When trying UnfoldingDone"
by GHC 16 Sep '15

16 Sep '15

#8168: ghc "Simplifier ticks exhausted" "When trying UnfoldingDone" -------------------------------------+------------------------------------- Reporter: sp55aa | Owner: Type: bug | Status: new Priority: high | Milestone: Component: Compiler | Version: 7.6.3 Keywords: Simplifier, | Operating System: Windows UnfoldingDone, simpl-tick-factor | Type of failure: GHC rejects Architecture: x86 | valid program Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | -------------------------------------+------------------------------------- ghc fail to compile this file: ---- begin Y.hs ---- newtype Rec a = Rec { unRec :: Rec a -> a } y :: (a -> a) -> a y = \f -> (\x -> f (unRec x x)) (Rec (\x -> f (unRec x x))) foo :: (a -> a) -> a -> a foo f n = f n main = print $ y foo 4 ---- end Y.hs ---- C:\Users\user\Desktop>ghc Y.lhs [1 of 1] Compiling Main ( Y.lhs, Y.o ) ghc: panic! (the 'impossible' happened) (GHC version 7.6.3 for i386-unknown-mingw32): Simplifier ticks exhausted When trying UnfoldingDone a_sqe{v} [lid] To increase the limit, use -fsimpl-tick-factor=N (default 100) If you need to do this, let GHC HQ know, and what factor you needed To see detailed counts use -ddump-simpl-stats Total ticks: 5601 Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8168> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8552: Rename StgArrWords to StgArrBytes
by GHC 15 Sep '15

15 Sep '15

#8552: Rename StgArrWords to StgArrBytes ------------------------------------+------------------------------------- Reporter: Tarrasch | Owner: Type: task | Status: new Priority: lowest | Milestone: Component: Compiler | Version: 7.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- Since #3800, `StgArrWords` contains a certain number of words and not bytes. One can easily forget this and make programming mistakes. For example if you try to store the number of words in the `bytes` field, the garbage collector won't honor your decision. (I learned the hard way :)) -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8552> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8596: windows link failure due to excessively long gcc commad line "Unable to start C:\Program Files\Haskell + Platform\2013.2.0.0\mingw\bin/realgcc.exe (error code: 87)"
by GHC 06 Sep '15

06 Sep '15

#8596: windows link failure due to excessively long gcc commad line "Unable to start C:\Program Files\Haskell + Platform\2013.2.0.0\mingw\bin/realgcc.exe (error code: 87)" ----------------------------+--------------------------------- Reporter: joeyhess | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Keywords: | Operating System: Windows Architecture: x86 | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ----------------------------+--------------------------------- I have a program (git-annex) which builds successfully on windows, but when I enable any of three optional features which pull in some additional libraries, it fails to link. I will attach the output of cabal build --ghc-options=-v for a failing and a successful build. I hypothesize this is due to a command line length limit. The final failing gcc link command is 43814 characters, vs 30765 in the configuration that succeeds. Right around the 32k boundry. Not sure what I can do to work around this, short of splitting up my program into standalone libraries which will link without referencing every individual module? -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8596> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8614: Duplicate symbol error when loading text twice
by GHC 05 Sep '15

05 Sep '15

#8614: Duplicate symbol error when loading text twice ------------------------------------+------------------------------------- Reporter: nh2 | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: GHCi crash Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- We are developing some FFI binding to some Kinect Camera library, and came across the following: {{{ GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Prelude> import Honi Prelude Honi> import Honi.Types Prelude Honi Honi.Types> initialize 2 Loading package array-0.4.0.1 ... linking ... done. Loading package deepseq-1.3.0.1 ... linking ... done. Loading package bytestring-0.10.0.2 ... linking ... done. Loading package text-0.11.3.1 ... linking ... done. Loading package honi-0.1.0.0 ... can't load .so/.DLL for: libfreenect.so (libfreenect.so: cannot open shared object file: No such file or directory) Prelude Honi Honi.Types> Right [d] <- getDeviceList Loading package array-0.4.0.1 ... linking ... done. Loading package deepseq-1.3.0.1 ... linking ... done. Loading package bytestring-0.10.0.2 ... linking ... done. Loading package text-0.11.3.1 ... GHCi runtime linker: fatal error: I found a duplicate definition for symbol __stginit_textzm0zi11zi3zi1_DataziText whilst processing object file /home/niklas/.cabal/lib/x86_64-linux- ghc-7.6.3/text-0.11.3.1/libHStext-0.11.3.1.a This could be caused by: * Loading two different object files which export the same symbol * Specifying the same object file twice on the GHCi command line * An incorrect `package.conf' entry, causing some object to be loaded twice. GHCi cannot safely continue in this situation. Exiting now. Sorry. }}} Apparently, ghci has no problem linking packages like array and deepseq twice, but when it comes across loading text another time, we get this duplicate symbol error. Does this make sense? Why does it not detect that text is already linked, like for the other packages? -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8614> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8290: lookupSymbol API is unsafe
by GHC 05 Sep '15

05 Sep '15

#8290: lookupSymbol API is unsafe -------------------------------------+------------------------------------- Reporter: ezyang | Owner: Type: task | Status: new Priority: normal | Milestone: Component: Runtime System | Version: 7.7 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: Documentation Difficulty: Easy (less than 1 | bug hour) | Test Case: Blocked By: | Blocking: Related Tickets: | -------------------------------------+------------------------------------- lookupSymbol is one of those functions that looks nice and innocuous on the tin, until you realize actually it doesn't actually do what you want, and seduces you into writing code that doesn't work on Mac OS X. Case in point, this recent test suite commit: {{{ commit 29b0521cd9be39b4026103d184d1fec14ef3bc22 Author: Edward Z. Yang <ezyang(a)mit.edu> Date: Fri Sep 13 20:52:57 2013 -0700 Properly provide leading underscore when necessary. Signed-off-by: Edward Z. Yang <ezyang(a)mit.edu> }}} Yes, the API is "correct" in some sense, but from a portability sense, we really want the function to add the underscore itself. If we change this particular function, we will probably break most dynamic loading code (including GHC's). We could also add a safe variant of the function. We just need to decide something to do. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8290> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8229: Linking in Windows is slow
by GHC 05 Sep '15

05 Sep '15

#8229: Linking in Windows is slow -------------------------+------------------------------------------------- Reporter: | Owner: ezyang | Status: new Type: bug | Milestone: 7.8.1 Priority: | Version: 7.7 normal | Operating System: Windows Component: | Type of failure: Compile-time performance bug Compiler | Test Case: Keywords: | Blocking: Architecture: | Unknown/Multiple | Difficulty: | Unknown | Blocked By: | Related Tickets: | -------------------------+------------------------------------------------- It takes a long time to link ghc-stage2 on Windows; several minutes on what should be a pretty beefy machine. Here is the linker command: {{{ "C:\Users\ezyang\Dev\ghc-validate\inplace\lib/../mingw/bin/gcc.exe" "-U__i686" "-fno-stack-prot ector" "-DTABLES_NEXT_TO_CODE" "-o" "compiler/stage2/build/libHSghc-7.7.20130904-ghc7.7.2013090 4.dll" "-shared" "-Wl,--out- implib=compiler/stage2/build/libHSghc-7.7.20130904-ghc7.7.20130904. dll.a" "-Wl,--enable-auto-import" "compiler\stage2\build\GhcMonad.dyn_o" "compiler\stage2\build \Llvm.dyn_o" "compiler\stage2\build\Llvm\AbsSyn.dyn_o" "compiler\stage2\build\Llvm\MetaData.dyn _o" "compiler\stage2\build\Llvm\PpLlvm.dyn_o" "compiler\stage2\build\Llvm\Types.dyn_o" "compile r\stage2\build\LlvmCodeGen.dyn_o" "compiler\stage2\build\LlvmCodeGen\Base.dyn_o" "compiler\stag e2\build\LlvmCodeGen\CodeGen.dyn_o" "compiler\stage2\build\LlvmCodeGen\Data.dyn_o" "compiler\st age2\build\LlvmCodeGen\Ppr.dyn_o" "compiler\stage2\build\LlvmCodeGen\Regs.dyn_o" "compiler\stag e2\build\LlvmMangler.dyn_o" "compiler\stage2\build\CmmBuildInfoTables.dyn_o" "compiler\stage2\b uild\CmmPipeline.dyn_o" "compiler\stage2\build\CmmCommonBlockElim.dyn_o" "compiler\stage2\build \CmmContFlowOpt.dyn_o" "compiler\stage2\build\CmmLex.dyn_o" "compiler\stage2\build\CmmLint.dyn_ o" "compiler\stage2\build\CmmLive.dyn_o" "compiler\stage2\build\CmmOpt.dyn_o" "compiler\stage2\ build\CmmParse.dyn_o" "compiler\stage2\build\CmmProcPoint.dyn_o" "compiler\stage2\build\CmmRewr iteAssignments.dyn_o" "compiler\stage2\build\CmmSink.dyn_o" "compiler\stage2\build\CmmLayoutSta ck.dyn_o" "compiler\stage2\build\PprBase.dyn_o" "compiler\stage2\build\PprC.dyn_o" "compiler\st age2\build\CgUtils.dyn_o" "compiler\stage2\build\StgCmm.dyn_o" "compiler\stage2\build\StgCmmBin d.dyn_o" "compiler\stage2\build\StgCmmCon.dyn_o" "compiler\stage2\build\StgCmmExpr.dyn_o" "comp iler\stage2\build\StgCmmForeign.dyn_o" "compiler\stage2\build\StgCmmHeap.dyn_o" "compiler\stage 2\build\StgCmmHpc.dyn_o" "compiler\stage2\build\StgCmmPrim.dyn_o" "compiler\stage2\build\StgCmm ExtCode.dyn_o" "compiler\stage2\build\CoreLint.dyn_o" "compiler\stage2\build\CorePrep.dyn_o" "c ompiler\stage2\build\ExternalCore.dyn_o" "compiler\stage2\build\MkExternalCore.dyn_o" "compiler \stage2\build\PprExternalCore.dyn_o" "compiler\stage2\build\Check.dyn_o" "compiler\stage2\build \Coverage.dyn_o" "compiler\stage2\build\Desugar.dyn_o" "compiler\stage2\build\DsArrows.dyn_o" " compiler\stage2\build\DsBinds.dyn_o" "compiler\stage2\build\DsCCall.dyn_o" "compiler\stage2\bui ld\DsExpr.dyn_o" "compiler\stage2\build\DsForeign.dyn_o" "compiler\stage2\build\DsGRHSs.dyn_o" "compiler\stage2\build\DsListComp.dyn_o" "compiler\stage2\build\DsMonad.dyn_o" "compiler\stage2 \build\DsUtils.dyn_o" "compiler\stage2\build\Match.dyn_o" "compiler\stage2\build\MatchCon.dyn_o " "compiler\stage2\build\MatchLit.dyn_o" "compiler\stage2\build\BinIface.dyn_o" "compiler\stage 2\build\BuildTyCl.dyn_o" "compiler\stage2\build\IfaceEnv.dyn_o" "compiler\stage2\build\LoadIfac e.dyn_o" "compiler\stage2\build\MkIface.dyn_o" "compiler\stage2\build\TcIface.dyn_o" "compiler\ stage2\build\FlagChecker.dyn_o" "compiler\stage2\build\CodeOutput.dyn_o" "compiler\stage2\build \DriverMkDepend.dyn_o" "compiler\stage2\build\DriverPipeline.dyn_o" "compiler\stage2\build\Find er.dyn_o" "compiler\stage2\build\GHC.dyn_o" "compiler\stage2\build\GhcMake.dyn_o" "compiler\sta ge2\build\GhcPlugins.dyn_o" "compiler\stage2\build\DynamicLoading.dyn_o" "compiler\stage2\build \HeaderInfo.dyn_o" "compiler\stage2\build\HscMain.dyn_o" "compiler\stage2\build\HscStats.dyn_o" "compiler\stage2\build\InteractiveEval.dyn_o" "compiler\stage2\build\PprTyThing.dyn_o" "compil er\stage2\build\SysTools.dyn_o" "compiler\stage2\build\TidyPgm.dyn_o" "compiler\stage2\build\Ct ype.dyn_o" "compiler\stage2\build\HaddockUtils.dyn_o" "compiler\stage2\build\LexCore.dyn_o" "co mpiler\stage2\build\Lexer.dyn_o" "compiler\stage2\build\Parser.dyn_o" "compiler\stage2\build\Pa rserCore.dyn_o" "compiler\stage2\build\ParserCoreUtils.dyn_o" "compiler\stage2\build\RdrHsSyn.d yn_o" "compiler\stage2\build\PrelInfo.dyn_o" "compiler\stage2\build\ProfInit.dyn_o" "compiler\s tage2\build\SCCfinal.dyn_o" "compiler\stage2\build\RnBinds.dyn_o" "compiler\stage2\build\RnEnv. dyn_o" "compiler\stage2\build\RnExpr.dyn_o" "compiler\stage2\build\RnHsDoc.dyn_o" "compiler\sta ge2\build\RnNames.dyn_o" "compiler\stage2\build\RnPat.dyn_o" "compiler\stage2\build\RnSource.dy n_o" "compiler\stage2\build\RnTypes.dyn_o" "compiler\stage2\build\CoreMonad.dyn_o" "compiler\st age2\build\CSE.dyn_o" "compiler\stage2\build\FloatIn.dyn_o" "compiler\stage2\build\FloatOut.dyn _o" "compiler\stage2\build\LiberateCase.dyn_o" "compiler\stage2\build\SAT.dyn_o" "compiler\stag e2\build\SetLevels.dyn_o" "compiler\stage2\build\SimplCore.dyn_o" "compiler\stage2\build\SimplE nv.dyn_o" "compiler\stage2\build\SimplMonad.dyn_o" "compiler\stage2\build\SimplUtils.dyn_o" "co mpiler\stage2\build\Simplify.dyn_o" "compiler\stage2\build\SimplStg.dyn_o" "compiler\stage2\bui ld\StgStats.dyn_o" "compiler\stage2\build\UnariseStg.dyn_o" "compiler\stage2\build\SpecConstr.d yn_o" "compiler\stage2\build\Specialise.dyn_o" "compiler\stage2\build\CoreToStg.dyn_o" "compile r\stage2\build\StgLint.dyn_o" "compiler\stage2\build\DmdAnal.dyn_o" "compiler\stage2\build\Work Wrap.dyn_o" "compiler\stage2\build\WwLib.dyn_o" "compiler\stage2\build\FamInst.dyn_o" "compiler \stage2\build\Inst.dyn_o" "compiler\stage2\build\TcAnnotations.dyn_o" "compiler\stage2\build\Tc Arrows.dyn_o" "compiler\stage2\build\TcBinds.dyn_o" "compiler\stage2\build\TcClassDcl.dyn_o" "c ompiler\stage2\build\TcDefaults.dyn_o" "compiler\stage2\build\TcDeriv.dyn_o" "compiler\stage2\b uild\TcEnv.dyn_o" "compiler\stage2\build\TcExpr.dyn_o" "compiler\stage2\build\TcForeign.dyn_o" "compiler\stage2\build\TcGenDeriv.dyn_o" "compiler\stage2\build\TcGenGenerics.dyn_o" "compiler\ stage2\build\TcHsSyn.dyn_o" "compiler\stage2\build\TcHsType.dyn_o" "compiler\stage2\build\TcIns tDcls.dyn_o" "compiler\stage2\build\TcMType.dyn_o" "compiler\stage2\build\TcValidity.dyn_o" "co mpiler\stage2\build\TcMatches.dyn_o" "compiler\stage2\build\TcPat.dyn_o" "compiler\stage2\build \TcRnDriver.dyn_o" "compiler\stage2\build\TcRnMonad.dyn_o" "compiler\stage2\build\TcRnTypes.dyn _o" "compiler\stage2\build\TcRules.dyn_o" "compiler\stage2\build\TcSimplify.dyn_o" "compiler\st age2\build\TcErrors.dyn_o" "compiler\stage2\build\TcTyClsDecls.dyn_o" "compiler\stage2\build\Tc TyDecls.dyn_o" "compiler\stage2\build\TcUnify.dyn_o" "compiler\stage2\build\TcInteract.dyn_o" " compiler\stage2\build\TcCanonical.dyn_o" "compiler\stage2\build\TcSMonad.dyn_o" "compiler\stage 2\build\FunDeps.dyn_o" "compiler\stage2\build\GraphBase.dyn_o" "compiler\stage2\build\GraphColo r.dyn_o" "compiler\stage2\build\GraphOps.dyn_o" "compiler\stage2\build\GraphPpr.dyn_o" "compile r\stage2\build\IOEnv.dyn_o" "compiler\stage2\build\State.dyn_o" "compiler\stage2\build\Vectoris e\Builtins\Base.dyn_o" "compiler\stage2\build\Vectorise\Builtins\Initialise.dyn_o" "compiler\st age2\build\Vectorise\Builtins.dyn_o" "compiler\stage2\build\Vectorise\Monad\Base.dyn_o" "compil er\stage2\build\Vectorise\Monad\Naming.dyn_o" "compiler\stage2\build\Vectorise\Monad\Local.dyn_ o" "compiler\stage2\build\Vectorise\Monad\Global.dyn_o" "compiler\stage2\build\Vectorise\Monad\ InstEnv.dyn_o" "compiler\stage2\build\Vectorise\Monad.dyn_o" "compiler\stage2\build\Vectorise\U tils\Base.dyn_o" "compiler\stage2\build\Vectorise\Utils\Closure.dyn_o" "compiler\stage2\build\V ectorise\Utils\Hoisting.dyn_o" "compiler\stage2\build\Vectorise\Utils\PADict.dyn_o" "compiler\s tage2\build\Vectorise\Utils\Poly.dyn_o" "compiler\stage2\build\Vectorise\Utils.dyn_o" "compiler \stage2\build\Vectorise\Generic\Description.dyn_o" "compiler\stage2\build\Vectorise\Generic\PAM ethods.dyn_o" "compiler\stage2\build\Vectorise\Generic\PADict.dyn_o" "compiler\stage2\build\Vec torise\Generic\PData.dyn_o" 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