[GHC] #14759: ListSetOps WARNING causes tests to fail

GHC ghc-devs at haskell.org
Mon Feb 5 00:30:39 UTC 2018 

#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/>
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