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Ticket Summary Status Owner Priority Milestone Component
#5813 Offer a compiler warning for failable pattern matches new normal 7.6.2 Compiler
#849 Offer control over branch prediction new normal 7.6.2 Compiler
#7977 Optimization: Shift dropped list heads by coeffecient to prevent thunk generation new low Compiler
#3919 Or-patterns as GHC extension new normal Compiler
#8799 Orientation of given `Coercible` constraints new normal Compiler (Type checker)
#8057 PackageImports with versions for ghci new normal GHCi
#4091 Parse error on curried context of instance declaration new normal Compiler
#8325 Pattern guards in anonymous functions new normal Compiler
#8584 Pattern synonym type signatures new normal Compiler
#4020 Please consider adding support for local type synonyms new low 7.6.2 Compiler (Type checker)
#4459 Polymorphic Data.Dynamic new vivian low 7.6.2 GHC API
#5059 Pragma to SPECIALISE on value arguments new low 7.6.2 Compiler
#8809 Prettier error messages? new normal Compiler
#8207 Pretty Printer for textual version of Language (name) in DynFlags new low GHC API
#368 Provide a Java Backend new normal Compiler
#8504 Provide minor GC residency estimates new simonmar lowest Runtime System
#1451 Provide way to show the origin of a constraint new normal Compiler (Type checker)
#2531 Prune duplicates in ghci history new lowest 7.6.2 GHCi
#8844 Pseudo terminal and process- new normal libraries/process
#284 RPM doesn't support --prefix new juhp normal Build System
#3869 RTS GC Statistics from -S should be logged via the eventlog system new low 7.6.2 Runtime System
#7495 Rebindable list syntax? new normal 7.8.3 Compiler
#7845 RebindableSyntax should allow rebinding tuples and lists new normal Compiler
#8610 Rebuild on a definition-based granularity new normal Compiler
#8582 Record syntax for pattern synonyms new cactus normal Compiler
#1262 RecursiveDo in Template Haskell new normal Template Haskell
#8634 Relax functional dependency coherence check ("liberal coverage condition") new high Compiler
#4259 Relax restrictions on type family instance overlap new normal 7.8.3 Compiler (Type checker)
#3490 Relax superclass restrictions new normal Compiler
#4937 Remove indirections caused by sum types, such as Maybe new normal 7.6.2 Compiler
#7961 Remove restrictions on promoting GADT's new normal Compiler
#8914 Remove unnecessary constraints from MonadComprehensions and ParallelListComp new normal Compiler (Type checker)
#2648 Report out of date interface files robustly new lowest 7.6.2 GHCi
#2641 Revise the rules for -XExtendedDefaultRules new lowest 7.6.2 Compiler
#7635 SafeHaskell implying other options new normal 7.8.3 Compiler
#3283 Selective disabling of unused bind warnings new normal Compiler
#17 Separate warnings for unused local and top-level bindings new lowest Compiler
#750 Set -M, -H, -c and other memory-related values based on available virtual/physical memory new normal Runtime System
#9005 Ship default bash completion file with ghc new lowest None
#5619 Shorter qualified import statements new normal 7.6.2 Compiler
#3693 Show stack traces new Tarrasch normal 7.10.1 Runtime System
#3452 Show type of most recent expression in GHCi new lowest 7.6.2 GHCi
#8643 Silent name shadowing new normal Compiler
#8555 Simplify given `Coercible` constraints new normal Compiler (Type checker)
#3483 Some mechanism for eliminating "absurd" patterns new low 7.6.2 Compiler
#7283 Specialise INLINE functions new normal 7.8.3 Compiler
#8100 Standalone deriving using template haskell new normal Template Haskell
#4016 Strange display behaviour in GHCi new low 7.6.2 Compiler
#7606 Stride scheduling for Haskell threads with priorities new ezyang normal 7.8.3 Runtime System
#472 Supertyping of classes new normal Compiler (Type checker)
#3977 Support double-byte encodings (Chinese/Japanese/Korean) on Windows new batterseapower low 7.8.3 libraries/base
#8061 Support for Complex Double in Foreign Function Interface new normal Compiler
#7746 Support loading/unloading profiled objects from a profiled executable new ezyang normal 7.8.3 Runtime System
#5556 Support pin-changing on ByteArray#s new normal 7.6.2 Compiler
#5197 Support static linker semantics for archives and weak symbols new low 7.6.2 Runtime System
#8955 Syscall intrinsic new normal Compiler
#3980 System.Posix.Signals should provide a way to set the SA_NOCLDWAIT flag new low 7.6.2 libraries/unix
#4222 Template Haskell lets you reify supposedly-abstract data types new low 7.6.2 Compiler
#1800 Template Haskell support for running functions defined in the same module new normal Template Haskell
#1444 Template Haskell: add proper support for qualified names in non-splicing applications new normal Template Haskell
#5467 Template Haskell: support for Haddock comments new normal 7.6.2 Template Haskell
#8924 Text.ParserCombinators.ReadP needs some kind of "commit" or "cut" to force a single parse.. new normal Compiler
#2742 The -> in ViewPatterns binds more weakly than infix data constructors. new normal Compiler
#7253 Top-level bindings in ghci new normal 7.8.3 GHCi
#8875 Track Exceptions new normal Compiler
#2640 Treat -X flags consistently in GHCi new lowest 7.6.2 Compiler
#4052 Two sided sections new low 7.6.2 Compiler
#8109 Type family patterns should support as-patterns. new normal Compiler
#8697 Type rationals new normal Compiler
#4385 Type-level natural numbers new diatchki normal 7.6.2 Compiler (Type checker)
#8778 Typeable TypeNats new normal Compiler (Type checker)
#6030 Typeclass constraint should pick the OverloadedString type. new normal Compiler
#7647 UNPACK polymorphic fields new simonpj normal 7.10.1 Compiler
#8165 Use GeneralizedNewtypeDeriving to automatically create associated type families new normal Compiler
#7204 Use a class to control FFI marshalling new normal 7.8.3 Compiler
#3215 Valgrind support new normal Runtime System
#7863 Verbosity level for quieter Template Haskell new normal Template Haskell
#2365 Warn about suspicious flags in OPTIONS_GHC pragmas new lowest 7.6.2 Compiler
#8997 Warn about unused parameters in recursive definitions new low Compiler
#8494 Warn if a pattern guard obviates all others new normal Compiler
#2135 Warn if functions are exported whose types cannot be written new lowest 7.6.2 Compiler
#8944 Warn instead of stopping on misplaced Haddock comments new normal Compiler (Parser)
#8012 Warn when using Enum instance for Float or Double new normal Compiler
#4980 Warning about module abbreviation clashes new low 7.6.2 Compiler
#4959 Warning about variables with leading underscore that are used anyway new low 7.10.1 Compiler (Parser)
#7169 Warning for incomplete record field label used as function new normal 7.8.3 Compiler
#2522 Warning for missing export lists new lowest 7.6.2 Compiler
#8064 Warning out when "undefined" value has been used. new normal Compiler
#2896 Warning suggestion: argument not necessarily a binary operator new low Compiler
#5392 Warnings about impossible MPTCs would be nice new normal 7.6.2 Compiler
#3601 When running two or more instances of GHCi, persistent history is only kept for the first one new normal GHCi
#3699 Wildcards in type functions new low 7.6.2 Compiler
#2269 Word type to Double or Float conversions are slower than Int conversions new dons@… lowest 7.6.2 Compiler
#1534 [Debugger] Watch on accesses of "variables" new lowest 7.6.2 GHCi
#2737 add :tracelocal to ghci debugger to trace only the expressions in a given function new lowest 7.6.2 GHCi
#8439 add a CPP program field to Settings file (decouple CPP program and C compiler choice) new normal 7.10.1 Compiler
#2945 add command :mergetrace new lowest 7.6.2 GHCi
#8288 add idris style EDSL support for deep embedding lambdas new normal 7.10.1 Compiler
#8419 add rawSystem variant that takes an environment new normal libraries/process
#1316 add warning for local type signatures that use the same type variable names as outer type signatures new simonpj normal Compiler
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