January 2019 - ghc-tickets

[GHC] #16258: PowerPC Big-Endian: ArithInt16, ArithInt8, ArithWord16, and ArithWord8 fail
by GHC 05 Mar '19

05 Mar '19

#16258: PowerPC Big-Endian: ArithInt16, ArithInt8, ArithWord16, and ArithWord8 fail -------------------------------------+------------------------------------- Reporter: trommler | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.10.1 Component: Compiler | Version: 8.7 Keywords: Big-endian | Operating System: Unknown/Multiple Architecture: powerpc64 | Type of failure: Incorrect result Test Case: | at runtime primops/should_run/ArithInt16, | Blocked By: primops/should_run/ArithWord16, | primops/should_run/ArithWord8, | primops/should_run/ArithInt8 | Blocking: | Related Tickets: #16222 Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- The tests were run on a PowerMac G5 running Linux, PowerMacs are big- endian. I reduced the issue to this program where I get the incorrect answer `25132`: {{{#!hs {-# LANGUAGE BangPatterns #-} {-# LANGUAGE MagicHash #-} {-# LANGUAGE UnboxedTuples #-} module Main where import GHC.Exts main :: IO () main = do putStrLn $ show (apply2 plusInt16# (50) (50)) apply2 :: (Int16# -> Int16# -> Int16#) -> Int -> Int -> Int apply2 op (I# a) (I# b) = let (# sa, sb #) = (# narrowInt16# a, narrowInt16# b #) r = op sa sb in I# (extendInt16# r) {-# NOINLINE apply2 #-} }}} Curiously, when I inline `plusInt16#` and remove the op parameter the result is correct. The test passes on little-endian PowerPC 64-bit. Note: This is bug is different form #16222 that deals with the C calling convention. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16258> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 7

[GHC] #16077: AvailTC Invariant being violated
by GHC 05 Mar '19

05 Mar '19

#16077: AvailTC Invariant being violated -------------------------------------+------------------------------------- Reporter: harpocrates | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- The `AvailTC Invariant` (from `basicTypes/Avail.hs`) states that: {{{ If the type or class is itself to be in scope, it must be *first* in this list. Thus, typically: @AvailTC Eq [Eq, ==, \/=]@ }}} Here is a case where this invariant is not upheld: * `pkgA/pkgA.cabal`: {{{ name: pkgA version: 1.0.0 build-type: Simple cabal-version: >= 1.2 library exposed-modules: A build-depends: base }}} * `pkgA/A.hs` {{{ {-# LANGUAGE TypeFamilies #-} {-# LANGUAGE TypeFamilies #-} module A ( C(..) , T(TI) , error ) where class C a where data T a instance C Int where data T Int = TI { ti :: Int } }}} * `pkgB/pkgB.cabal` {{{ name: pkgB version: 1.0.0 build-type: Simple cabal-version: >= 1.2 library exposed-modules: B build-depends: base, pkgA }}} * `pkgB/B.hs` {{{ module B ( module A ) where import A hiding (error) }}} Now, check out the exports for `A` vs. `B`: {{{ $ cabal new-build pkgA pkgB --ghc-options -ddump-rn-trace | grep rnExports Warning: The package list for 'hackage.haskell.org' is 38 days old. Run 'cabal update' to get the latest list of available packages. rnExports: Exports: [error, C{C, T;}, T{T, TI;}] rnExports: Exports: [C{C, T;}, T{TI;}] }}} Why is `T{TI;}` in the second line not `T{T, TI;}`? Shouldn't the exports for `B` be identical to those for `A` (except for `error`)? This is causing a crash in Haddock: https://github.com/haskell/haddock/issues/979. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16077> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 4

[GHC] #16254: INLINABLE pragma and newtype wrappers prevent inlining
by GHC 05 Mar '19

05 Mar '19

#16254: INLINABLE pragma and newtype wrappers prevent inlining -------------------------------------+------------------------------------- Reporter: monoidal | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: #5327 Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- In #5327, we allowed case-of-known constructor to see through bindings that were marked as INLINABLE and used newtypes. However, this works only if the newtype does not have a wrapper. The following code, which is the same as T5237 except for the extra type parameters in Size, does not cause the optimization to fire. {{{ {-# LANGUAGE GADTs, ExplicitForAll #-} module T16254 where newtype Size a b where Size :: forall b a. Int -> Size a b {-# INLINABLE val2 #-} val2 = Size 17 f n = case val2 of Size s -> s + s > n }}} The reason is that `exprIsConApp_maybe` sees `$WSize (I# 17#)`, which is an application with a nontrivial argument. In general, this could cause duplication of work, but in this case we're dealing with a newtype wrapper, so this is safe. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16254> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 12

[GHC] #8657: -fregs-graph still has a limit on spill slots
by GHC 05 Mar '19

05 Mar '19

#8657: -fregs-graph still has a limit on spill slots -----------------------------------+--------------------------------------- Reporter: simonmar | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.8.1 Component: Compiler (NCG) | Version: 7.7 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: Compile-time crash Unknown/Multiple | Test Case: Difficulty: Unknown | Blocking: Blocked By: | Related Tickets: | -----------------------------------+--------------------------------------- The limit on spill slots was removed for the linear register allocator in 7.8, but not for `-fregs-graph`. SHA-1 fails to compile with `-fregs-graph` in 7.8. Related: #7679 (`-fregs-graph` generates poor code with the new codegen). -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8657> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 18

[GHC] #15471: Polymorphism, typed splices and type inference don't mix
by GHC 05 Mar '19

05 Mar '19

#15471: Polymorphism, typed splices and type inference don't mix -------------------------------------+------------------------------------- Reporter: mpickering | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.4.3 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Trying to quote and splice a polymorphic function doesn't work unless you have a type signature. {{{ {-# LANGUAGE TemplateHaskell #-} module A where foo1 x = x test_foo = [|| foo1 ||] }}} {{{ {-# LANGUAGE TemplateHaskell #-} module B where import A qux = $$(test_foo) }}} The type of `qux` is `Any -> Any`! Which is clearly wrong. Adding a type signature to `qux` fixes the problem. {{{ qux :: a -> a qux = $$(test_foo) }}} Either there should be a better error or this should just work. It seems that this has always been broken. Ryan tested on GHC 7.8.4 for me. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15471> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 19

[GHC] #12919: Equality not used for substitution
by GHC 05 Mar '19

05 Mar '19

#12919: Equality not used for substitution -------------------------------------+------------------------------------- Reporter: int-index | Owner: Type: bug | Status: new Priority: high | Milestone: Component: Compiler | Version: 8.0.1 (Type checker) | Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: GHC rejects Unknown/Multiple | valid program Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- This code {{{ {-# LANGUAGE TypeInType, TypeFamilies, GADTs, ConstraintKinds #-} import Data.Kind data N = Z data V :: N -> Type where VZ :: V Z type family VC (n :: N) :: Type where VC Z = Type type family VF (xs :: V n) (f :: VC n) :: Type where VF VZ f = f data Dict c where Dict :: c => Dict c prop :: xs ~ VZ => Dict (VF xs f ~ f) prop = Dict }}} fails with this error: {{{ Op.hs:20:8: error: • Couldn't match type ‘f’ with ‘VF 'VZ f’ arising from a use of ‘Dict’ ‘f’ is a rigid type variable bound by the type signature for: prop :: forall (xs :: V 'Z) f. xs ~ 'VZ => Dict VF xs f ~ f at Op.hs:19:9 • In the expression: Dict In an equation for ‘prop’: prop = Dict • Relevant bindings include prop :: Dict VF xs f ~ f (bound at Op.hs:20:1) }}} However, if I substitute `xs` with `VZ` (by hand) in the type of `prop`, it compiles. Can be reproduced with GHC 8.0.1 but not HEAD. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12919> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 25

[GHC] #15549: Core Lint error with empty closed type family
by GHC 05 Mar '19

05 Mar '19

#15549: Core Lint error with empty closed type family -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.6.1 Component: Compiler | Version: 8.4.3 (Type checker) | Keywords: TypeFamilies, | Operating System: Unknown/Multiple TypeInType | Architecture: | Type of failure: Compile-time Unknown/Multiple | crash or panic Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- The following program gives a Core Lint error on GHC 8.2.2 and later: {{{#!hs {-# LANGUAGE EmptyCase #-} {-# LANGUAGE ScopedTypeVariables #-} {-# LANGUAGE TypeFamilies #-} {-# LANGUAGE TypeInType #-} {-# LANGUAGE UndecidableInstances #-} module Bug where import Data.Kind import Data.Void data family Sing (a :: k) data V1 :: Type -> Type data instance Sing (z :: V1 p) class Generic a where type Rep a :: Type -> Type to :: Rep a x -> a class PGeneric a where type To (z :: Rep a x) :: a class SGeneric a where sTo :: forall x (r :: Rep a x). Sing r -> Sing (To r :: a) ----- instance Generic Void where type Rep Void = V1 to x = case x of {} type family EmptyCase (a :: j) :: k where instance PGeneric Void where type To x = EmptyCase x instance SGeneric Void where sTo x = case x of }}} {{{ $ /opt/ghc/8.4.3/bin/ghc Bug.hs -dcore-lint -fforce-recomp [1 of 1] Compiling Bug ( Bug.hs, Bug.o ) *** Core Lint errors : in result of Simplifier *** Bug.hs:38:7: warning: [in body of lambda with binder x_aZ8 :: Sing r_a12q] Kind application error in coercion ‘(Sing (D:R:RepVoid[0] <x_a12p>_N) <r_a12q>_N)_R’ Function kind = forall k. k -> * Arg kinds = [(V1 x_a12p, *), (r_a12q, Rep Void x_a12p)] Fun: V1 x_a12p (r_a12q, Rep Void x_a12p) Bug.hs:38:7: warning: [in body of lambda with binder x_aZ8 :: Sing r_a12q] Kind application error in coercion ‘D:R:SingV1z0[0] <x_a12p>_N <r_a12q>_N’ Function kind = V1 x_a12p -> * Arg kinds = [(r_a12q, Rep Void x_a12p)] Fun: V1 x_a12p (r_a12q, Rep Void x_a12p) Bug.hs:38:7: warning: [in body of lambda with binder x_aZ8 :: Sing r_a12q] Kind application error in coercion ‘D:R:SingV1z0[0] <x_a12p>_N <r_a12q>_N’ Function kind = V1 x_a12p -> * Arg kinds = [(r_a12q, Rep Void x_a12p)] Fun: V1 x_a12p (r_a12q, Rep Void x_a12p) <no location info>: warning: In the type ‘R:SingV1z x_a12p r_a12q’ Kind application error in type ‘R:SingV1z x_a12p r_a12q’ Function kind = forall p -> V1 p -> * Arg kinds = [(x_a12p, *), (r_a12q, Rep Void x_a12p)] Fun: V1 x_a12p (r_a12q, Rep Void x_a12p) <no location info>: warning: In the type ‘R:SingV1z x_a12p r_a12q’ Kind application error in type ‘R:SingV1z x_a12p r_a12q’ Function kind = forall p -> V1 p -> * Arg kinds = [(x_a12p, *), (r_a12q, Rep Void x_a12p)] Fun: V1 x_a12p (r_a12q, Rep Void x_a12p) *** Offending Program *** <elided> $csTo_a12n :: forall x (r :: Rep Void x). Sing r -> Sing (To r) [LclId, Arity=1, Str=<L,U>x, Unf=Unf{Src=<vanilla>, TopLvl=True, Value=True, ConLike=True, WorkFree=True, Expandable=True, Guidance=ALWAYS_IF(arity=1,unsat_ok=True,boring_ok=True)}] $csTo_a12n = \ (@ x_a12p) (@ (r_a12q :: Rep Void x_a12p)) (x_aZ8 :: Sing r_a12q) -> case x_aZ8 `cast` ((Sing (D:R:RepVoid[0] <x_a12p>_N) <r_a12q>_N)_R ; D:R:SingV1z0[0] <x_a12p>_N <r_a12q>_N :: (Sing r_a12q :: *) ~R# (R:SingV1z x_a12p r_a12q :: *)) of nt_s13T { } }}} GHC 8.0.2 does not appear to suffer from this Core Lint error. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15549> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 10

[GHC] #14729: normaliseType is not well-kinded
by GHC 05 Mar '19

05 Mar '19

#14729: normaliseType is not well-kinded -------------------------------------+------------------------------------- Reporter: goldfire | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.2.2 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Suppose we have {{{ Proxy :: forall k. k -> Type type family F a type instance F Int = Bool }}} and we're trying to normalise the target {{{ Proxy (F Int) x }}} Clearly, for this target to be well kinded, we need `x :: F Int`. Currently, the output of `normaliseType` is `Proxy Bool x`, which is just plain wrong. I need to implement logic like in `flatten_args` on [https://github.com/goldfirere/ghc my branch] in `normaliseType` to fix this. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14729> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 15

[GHC] #14759: ListSetOps WARNING causes tests to fail
by GHC 05 Mar '19

05 Mar '19

#14759: ListSetOps WARNING causes tests to fail -------------------------------------+------------------------------------- Reporter: ezyang | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.2.2 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Example log: ``` +WARNING: file compiler/utils/ListSetOps.hs, line 58 + [Distribution.Backpack, Distribution.Backpack.FullUnitId, + Distribution.Backpack.ModuleShape, + Distribution.Backpack.PreModuleShape, + Distribution.Backpack.ReadyComponent, + Distribution.CabalSpecVersion, Distribution.Compat.Graph, + Distribution.Compat.Semigroup, Distribution.Compiler, + Distribution.License, Distribution.ModuleName, + Distribution.SPDX.License, Distribution.SPDX.LicenseExceptionId, + Distribution.SPDX.LicenseExpression, Distribution.SPDX.LicenseId, + Distribution.SPDX.LicenseReference, + Distribution.Simple.BuildTarget, Distribution.Simple.Compiler, + Distribution.Simple.Doctest, Distribution.Simple.Haddock, + Distribution.Simple.InstallDirs, Distribution.Simple.PackageIndex, + Distribution.Simple.Program.Find, Distribution.Simple.Program.GHC, + Distribution.Simple.Program.Types, Distribution.Simple.Setup, + Distribution.System, Distribution.Types.AbiDependency, + Distribution.Types.AbiHash, Distribution.Types.Benchmark, + Distribution.Types.BenchmarkInterface, + Distribution.Types.BenchmarkType, Distribution.Types.BuildInfo, + Distribution.Types.BuildType, Distribution.Types.ComponentId, + Distribution.Types.ComponentLocalBuildInfo, + Distribution.Types.ComponentName, + Distribution.Types.ComponentRequestedSpec, + Distribution.Types.CondTree, Distribution.Types.Condition, + Distribution.Types.Dependency, Distribution.Types.ExeDependency, + Distribution.Types.Executable, Distribution.Types.ExecutableScope, + Distribution.Types.ExposedModule, Distribution.Types.ForeignLib, + Distribution.Types.ForeignLibOption, + Distribution.Types.ForeignLibType, + Distribution.Types.GenericPackageDescription, + Distribution.Types.IncludeRenaming, + Distribution.Types.InstalledPackageInfo, + Distribution.Types.LegacyExeDependency, Distribution.Types.Library, + Distribution.Types.LocalBuildInfo, Distribution.Types.Mixin, + Distribution.Types.Module, Distribution.Types.ModuleReexport, + Distribution.Types.ModuleRenaming, + Distribution.Types.MungedPackageId, + Distribution.Types.MungedPackageName, + Distribution.Types.PackageDescription, + Distribution.Types.PackageId, Distribution.Types.PackageName, + Distribution.Types.PkgconfigDependency, + Distribution.Types.PkgconfigName, + Distribution.Types.SetupBuildInfo, Distribution.Types.SourceRepo, + Distribution.Types.TargetInfo, Distribution.Types.TestSuite, + Distribution.Types.TestSuiteInterface, Distribution.Types.TestType, + Distribution.Types.UnitId, Distribution.Types.UnqualComponentName, + Distribution.Types.Version, Distribution.Types.VersionRange, + Distribution.Utils.ShortText, Distribution.Verbosity, + Language.Haskell.Extension, Control.Applicative, Data.Complex, + Data.Functor.Compose, Data.Functor.Const, Data.Functor.Identity, + Data.Functor.Product, Data.Functor.Sum, Data.Monoid, + Data.Semigroup, Data.Semigroup.Internal, Data.Version, Data.Void, + GHC.Exts, GHC.Generics, GHC.IO.Exception, Data.Graph, + Data.IntMap.Internal, Data.IntSet.Internal, Data.Map.Internal, + Data.Sequence.Internal, Data.Set.Internal, Data.Tree, + Text.PrettyPrint.Annotated.HughesPJ, Text.PrettyPrint.HughesPJ, + Data.Text, Data.Text.Lazy] + [] +WARNING: file compiler/utils/ListSetOps.hs, line 58 + [Control.Applicative, Data.Functor.Const, Data.Functor.Identity, + Data.Monoid, Data.Semigroup.Internal, GHC.Generics, + GHC.IO.Exception] + [Distribution.Backpack, Distribution.Backpack.FullUnitId, + Distribution.Backpack.ModuleShape, + Distribution.Backpack.PreModuleShape, + Distribution.Backpack.ReadyComponent, + Distribution.CabalSpecVersion, Distribution.Compat.Graph, + Distribution.Compat.Semigroup, Distribution.Compiler, + Distribution.License, Distribution.ModuleName, + Distribution.SPDX.License, Distribution.SPDX.LicenseExceptionId, + Distribution.SPDX.LicenseExpression, Distribution.SPDX.LicenseId, + Distribution.SPDX.LicenseReference, + Distribution.Simple.BuildTarget, Distribution.Simple.Compiler, + Distribution.Simple.Doctest, Distribution.Simple.Haddock, + Distribution.Simple.InstallDirs, Distribution.Simple.PackageIndex, + Distribution.Simple.Program.Find, Distribution.Simple.Program.GHC, + Distribution.Simple.Program.Types, Distribution.Simple.Setup, + Distribution.System, Distribution.Types.AbiDependency, + Distribution.Types.AbiHash, Distribution.Types.Benchmark, + Distribution.Types.BenchmarkInterface, + Distribution.Types.BenchmarkType, Distribution.Types.BuildInfo, + Distribution.Types.BuildType, Distribution.Types.ComponentId, + Distribution.Types.ComponentLocalBuildInfo, + Distribution.Types.ComponentName, + Distribution.Types.ComponentRequestedSpec, + Distribution.Types.CondTree, Distribution.Types.Condition, + Distribution.Types.Dependency, Distribution.Types.ExeDependency, + Distribution.Types.Executable, Distribution.Types.ExecutableScope, + Distribution.Types.ExposedModule, Distribution.Types.ForeignLib, + Distribution.Types.ForeignLibOption, + Distribution.Types.ForeignLibType, + Distribution.Types.GenericPackageDescription, + Distribution.Types.IncludeRenaming, + Distribution.Types.InstalledPackageInfo, + Distribution.Types.LegacyExeDependency, Distribution.Types.Library, + Distribution.Types.LocalBuildInfo, Distribution.Types.Mixin, + Distribution.Types.Module, Distribution.Types.ModuleReexport, + Distribution.Types.ModuleRenaming, + Distribution.Types.MungedPackageId, + Distribution.Types.MungedPackageName, + Distribution.Types.PackageDescription, + Distribution.Types.PackageId, Distribution.Types.PackageName, + Distribution.Types.PkgconfigDependency, + Distribution.Types.PkgconfigName, + Distribution.Types.SetupBuildInfo, Distribution.Types.SourceRepo, + Distribution.Types.TargetInfo, Distribution.Types.TestSuite, + Distribution.Types.TestSuiteInterface, Distribution.Types.TestType, + Distribution.Types.UnitId, Distribution.Types.UnqualComponentName, + Distribution.Types.Version, Distribution.Types.VersionRange, + Distribution.Utils.ShortText, Distribution.Verbosity, + Language.Haskell.Extension, Control.Applicative, Data.Complex, + Data.Functor.Compose, Data.Functor.Const, Data.Functor.Identity, + Data.Functor.Product, Data.Functor.Sum, Data.Monoid, + Data.Semigroup, Data.Semigroup.Internal, Data.Version, Data.Void, + GHC.Exts, GHC.Generics, GHC.IO.Exception, Data.Graph, + Data.IntMap.Internal, Data.IntSet.Internal, Data.Map.Internal, + Data.Sequence.Internal, Data.Set.Internal, Data.Tree, + Text.PrettyPrint.Annotated.HughesPJ, Text.PrettyPrint.HughesPJ, + Data.Text, Data.Text.Lazy] +WARNING: file compiler/utils/ListSetOps.hs, line 58 + [] + [Distribution.Backpack, Distribution.Backpack.FullUnitId, + Distribution.Backpack.ModuleShape, + Distribution.Backpack.PreModuleShape, + Distribution.Backpack.ReadyComponent, + Distribution.CabalSpecVersion, Distribution.Compat.Graph, + Distribution.Compat.Semigroup, Distribution.Compiler, + Distribution.License, Distribution.ModuleName, + Distribution.SPDX.License, Distribution.SPDX.LicenseExceptionId, + Distribution.SPDX.LicenseExpression, Distribution.SPDX.LicenseId, + Distribution.SPDX.LicenseReference, + Distribution.Simple.BuildTarget, Distribution.Simple.Compiler, + Distribution.Simple.Doctest, Distribution.Simple.Haddock, + Distribution.Simple.InstallDirs, Distribution.Simple.PackageIndex, + Distribution.Simple.Program.Find, Distribution.Simple.Program.GHC, + Distribution.Simple.Program.Types, Distribution.Simple.Setup, + Distribution.System, Distribution.Types.AbiDependency, + Distribution.Types.AbiHash, Distribution.Types.Benchmark, + Distribution.Types.BenchmarkInterface, + Distribution.Types.BenchmarkType, Distribution.Types.BuildInfo, + Distribution.Types.BuildType, Distribution.Types.ComponentId, + Distribution.Types.ComponentLocalBuildInfo, + Distribution.Types.ComponentName, + Distribution.Types.ComponentRequestedSpec, + Distribution.Types.CondTree, Distribution.Types.Condition, + Distribution.Types.Dependency, Distribution.Types.ExeDependency, + Distribution.Types.Executable, Distribution.Types.ExecutableScope, + Distribution.Types.ExposedModule, Distribution.Types.ForeignLib, + Distribution.Types.ForeignLibOption, + Distribution.Types.ForeignLibType, + Distribution.Types.GenericPackageDescription, + Distribution.Types.IncludeRenaming, + Distribution.Types.InstalledPackageInfo, + Distribution.Types.LegacyExeDependency, Distribution.Types.Library, + Distribution.Types.LocalBuildInfo, Distribution.Types.Mixin, + Distribution.Types.Module, Distribution.Types.ModuleReexport, + Distribution.Types.ModuleRenaming, + Distribution.Types.MungedPackageId, + Distribution.Types.MungedPackageName, + Distribution.Types.PackageDescription, + Distribution.Types.PackageId, Distribution.Types.PackageName, + Distribution.Types.PkgconfigDependency, + Distribution.Types.PkgconfigName, + Distribution.Types.SetupBuildInfo, Distribution.Types.SourceRepo, + Distribution.Types.TargetInfo, Distribution.Types.TestSuite, + Distribution.Types.TestSuiteInterface, Distribution.Types.TestType, + Distribution.Types.UnitId, Distribution.Types.UnqualComponentName, + Distribution.Types.Version, Distribution.Types.VersionRange, + Distribution.Utils.ShortText, Distribution.Verbosity, + Language.Haskell.Extension, Control.Applicative, Data.Complex, + Data.Functor.Compose, Data.Functor.Const, Data.Functor.Identity, + Data.Functor.Product, Data.Functor.Sum, Data.Monoid, + Data.Semigroup, Data.Semigroup.Internal, Data.Version, Data.Void, + GHC.Exts, GHC.Generics, GHC.IO.Exception, Data.Graph, + Data.IntMap.Internal, Data.IntSet.Internal, Data.Map.Internal, + Data.Sequence.Internal, Data.Set.Internal, Data.Tree, + Text.PrettyPrint.Annotated.HughesPJ, Text.PrettyPrint.HughesPJ, + Data.Text, Data.Text.Lazy] +WARNING: file compiler/utils/ListSetOps.hs, line 58 + [Distribution.Backpack, Distribution.Backpack.FullUnitId, + Distribution.Backpack.ModuleShape, + Distribution.Backpack.PreModuleShape, + Distribution.Backpack.ReadyComponent, + Distribution.CabalSpecVersion, Distribution.Compat.Graph, + Distribution.Compat.Semigroup, Distribution.Compiler, + Distribution.License, Distribution.ModuleName, + Distribution.SPDX.License, Distribution.SPDX.LicenseExceptionId, + Distribution.SPDX.LicenseExpression, Distribution.SPDX.LicenseId, + Distribution.SPDX.LicenseReference, + Distribution.Simple.BuildTarget, Distribution.Simple.Compiler, + Distribution.Simple.Doctest, Distribution.Simple.Haddock, + Distribution.Simple.InstallDirs, Distribution.Simple.PackageIndex, + Distribution.Simple.Program.Find, Distribution.Simple.Program.GHC, + Distribution.Simple.Program.Types, Distribution.Simple.Setup, + Distribution.System, Distribution.Types.AbiDependency, + Distribution.Types.AbiHash, Distribution.Types.Benchmark, + Distribution.Types.BenchmarkInterface, + Distribution.Types.BenchmarkType, Distribution.Types.BuildInfo, + Distribution.Types.BuildType, Distribution.Types.ComponentId, + Distribution.Types.ComponentLocalBuildInfo, + Distribution.Types.ComponentName, + Distribution.Types.ComponentRequestedSpec, + Distribution.Types.CondTree, Distribution.Types.Condition, + Distribution.Types.Dependency, Distribution.Types.ExeDependency, + Distribution.Types.Executable, Distribution.Types.ExecutableScope, + Distribution.Types.ExposedModule, Distribution.Types.ForeignLib, + Distribution.Types.ForeignLibOption, + Distribution.Types.ForeignLibType, + Distribution.Types.GenericPackageDescription, + Distribution.Types.IncludeRenaming, + Distribution.Types.InstalledPackageInfo, + Distribution.Types.LegacyExeDependency, Distribution.Types.Library, + Distribution.Types.LocalBuildInfo, Distribution.Types.Mixin, + Distribution.Types.Module, Distribution.Types.ModuleReexport, + Distribution.Types.ModuleRenaming, + Distribution.Types.MungedPackageId, + Distribution.Types.MungedPackageName, + Distribution.Types.PackageDescription, + Distribution.Types.PackageId, Distribution.Types.PackageName, + Distribution.Types.PkgconfigDependency, + Distribution.Types.PkgconfigName, + Distribution.Types.SetupBuildInfo, Distribution.Types.SourceRepo, + Distribution.Types.TargetInfo, Distribution.Types.TestSuite, + Distribution.Types.TestSuiteInterface, Distribution.Types.TestType, + Distribution.Types.UnitId, Distribution.Types.UnqualComponentName, + Distribution.Types.Version, Distribution.Types.VersionRange, + Distribution.Utils.ShortText, Distribution.Verbosity, + Language.Haskell.Extension, Control.Applicative, Data.Complex, + Data.Functor.Compose, Data.Functor.Const, Data.Functor.Identity, + Data.Functor.Product, Data.Functor.Sum, Data.Monoid, + Data.Semigroup, Data.Semigroup.Internal, Data.Version, Data.Void, + GHC.Exts, GHC.Generics, GHC.IO.Exception, Data.Graph, + Data.IntMap.Internal, Data.IntSet.Internal, Data.Map.Internal, + Data.Sequence.Internal, Data.Set.Internal, Data.Tree, + Text.PrettyPrint.Annotated.HughesPJ, Text.PrettyPrint.HughesPJ, + Data.Text, Data.Text.Lazy] + [] *** unexpected failure for cabal09(normal) ``` This is probably orph calculation. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14759> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 19

[GHC] #16230: API Annotations: more explicit foralls fixup
by GHC 05 Mar '19

05 Mar '19

#16230: API Annotations: more explicit foralls fixup -------------------------------------+------------------------------------- Reporter: alanz | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: 8.8.1 Component: Compiler | Version: 8.6.3 (Parser) | Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: Incorrect API Unknown/Multiple | annotation Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- The `AnnForall` annotations introduced via Phab:D4894 are not always attached to the correct `SourceSpan`. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16230> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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