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Ticket Summary Status Owner Priority Milestone Component
#860 CPP fails when a macro is used on a line containing a single quote character new lowest Compiler
#5075 CPR optimisation for sum types if only one constructor is used new simonpj normal 7.12.1 Compiler
#3557 CPU Vector instructions in GHC.Prim new normal Data Parallel Haskell
#9441 CSE should deal with letrec new normal Compiler
#5344 CSE should look through coercions new simonpj normal Compiler
#9120 Cache intermediate powers new ekmett normal Core Libraries
#7952 Can cost-centre annotations be included in -ddump-simpl? new normal Compiler
#7401 Can't derive instance for Eq when datatype has no constructor, while it is trivial do do so. new monoidal normal 7.12.1 Compiler
#9118 Can't eta-reduce representational coercions new normal Compiler
#5476 Cap memory usage for one thread without disrupting other threads new normal Runtime System
#10116 Closed type families: Warn if it doesn't handle all cases new normal Compiler
#9865 Comonads in base library new ekmett normal 7.12.1 Core Libraries
#3744 Comparisons against minBound/maxBound not optimised for (Int|Word)(8|16|32) new low 7.12.1 Compiler
#7870 Compilatio​n errors break the complexity encapsulat​ion on DSLs, impairs success in industry new normal Compiler (Type checker)
#9244 Compiler could warn about type variable shadowing, and hint about ScopedTypeVariables new normal Compiler
#3577 Complete support for Data Parallel Haskell new rl normal Data Parallel Haskell
#4900 Consider usage files in the GHCi recompilation check new normal 7.12.1 Compiler
#9350 Consider using xchg instead of mfence for CS stores new normal Compiler (NCG)
#9819 Create typesafe method of obtaining dictionary types from class definitions, and constraint objects from dictionary types new normal Compiler
#7330 Data Parallel Haskell (DPH) isn't usable yet. new benl normal 7.12.1 Data Parallel Haskell
#10014 Data.Array.Base.elems needlessly calls bounds. new ekmett normal Core Libraries
#10084 Data.List should have a takeLastN function new normal libraries/base
#9795 Debug.Trace.trace is too strict new normal 7.12.1 libraries/base
#436 Declare large amounts of constant data new normal Compiler
#8404 Default to turning on architecture specific optimizations in the codegen new normal Compiler (NCG)
#3583 Default view patterns new normal Compiler
#7395 DefaultSignatures conflict with default implementations new normal 7.12.1 Compiler
#10087 DefaultSignatures: error message mentions internal name new normal Compiler (Type checker)
#4879 Deprecate exports new high 7.12.1 Compiler
#8560 Derive some generic representation for GADTs new normal Compiler (Type checker)
#9748 Disambiguate IO actions in GHCi with :set +t new zudov low GHCi
#9427 Do finer-grained dependency analysis to infer more general kinds on type/class declarations new normal Compiler (Type checker)
#5429 Docase notation as GHC extension new tomasp normal 7.12.1 Compiler
#9291 Don't reconstruct sum types if the type subtly changes new normal Compiler
#10076 Don't suppress warnings in the presence of errors new normal Compiler
#8353 Easy way to defer type errors new normal GHCi
#5239 Em-dash for "--" with UnicodeSyntax. new normal 7.12.1 Compiler (Parser)
#2333 Emit a warning if an INLINE function is a loop breaker new lowest 7.12.1 Compiler
#5082 Emit warnings when conflicting flags are supplied new low Compiler
#9182 Empty case analysis for function clauses new low Compiler
#3122 Enhance --info new duncan lowest 7.12.1 Compiler
#2614 Enumeration of values for `Sys.Info.os`, `Sys.Info.arch` new mjg low 7.12.1 Core Libraries
#2708 Error message should suggest UnboxedTuples language extension new low Compiler (Parser)
#8779 Exhaustiveness checks for pattern synonyms new normal Compiler (Type checker)
#9970 Export more types in GHC.RTS.Flags new normal 7.12.1 libraries/base
#9743 Expose ghc-bin code as a library new normal 7.12.1 Compiler
#9946 Expose the source location of template-haskell Names new low Compiler
#8679 Extend FunD data constructor with information about type signature new normal Template Haskell
#8171 Extending ExtendedDefaultRules new normal Compiler
#5823 FFI and CAPI needs {-# INCLUDE #-} back? new normal 7.12.1 Compiler
#9197 FFI types should be usable in foreign import decls without revealing representations new normal Compiler (FFI)
#8043 Feature Request : Qualified module exports new normal Compiler
#3464 Find import declaration importing a certain function new low 7.12.1 GHCi
#4092 Floating point manipulation : ulp and coerce IEEE-754 Double# into Word64# new normal 7.12.1 Compiler
#2465 Fusion of recursive functions new low Compiler
#9846 GHC --make should also look for .hi, not only for .hs new normal Compiler
#8930 GHC API: List of available Pragmas new normal GHC API
#8673 GHC could generate GADT record selectors in more cases new normal Compiler
#7337 GHC does not generate great code for bit-level rotation new normal 7.12.1 Compiler (NCG)
#9685 GHC fails to build with mingw32-make on Windows new gintas low Build System
#3517 GHC has lots of extra hidden IOErrorType values new low Core Libraries
#9498 GHC links against unversioned .so files new low Compiler (FFI)
#9987 GHC refuses to compile a file that starts with a Byte Order Mark (BOM) new low Compiler
#9183 GHC shouldn't expand constraint synonyms new normal Compiler
#9938 GHC's link step needs to be told which packages to link new normal Compiler
#1192 GHC-only IOErrorType constructors, and is*Error(Type) functions new low Compiler
#8429 GHC.Base.{breakpoint, breakpointCond} do nothing new iand675 normal 7.12.1 Compiler
#4329 GHC.Conc modifyTVar primitive new ekmett low 7.12.1 Core Libraries
#9622 GHCi command to solve a constraint new normal Compiler (Type checker)
#7158 GHCi commands case insensitive new normal 7.12.1 GHCi
#3615 GHCi doesn't allow the use of imported data contructors new normal GHCi
#9259 GHCi should list its available command line options new kolmodin normal Driver
#9360 GHCi: Behave nicely on `-e`, like `ghc` and other programs new normal GHCi
#9252 Generalize hs-boot files to be more like module signatures new ezyang normal Compiler
#3205 Generalized isomorphic deriving new normal Compiler
#8473 Generate table of cost-centre numbers with source locations new normal Profiling
#7492 Generic1 deriving: Can we replace Rec1 f with f :.: Par1? new dreixel normal 7.12.1 Compiler
#8199 Get rid of HEAP_ALLOCED new ezyang normal 7.12.1 Compiler
#9723 Give Tab warning only once per file new low Compiler
#7275 Give more detailed information about PINNED data in a heap profile new normal 7.12.1 Compiler
#3984 Handle multiline input in GHCi history new normal 7.12.1 GHCi
#10035 Harbormaster doesn't post to Differential on success new normal Trac & Git
#5910 Holes with other constraints new normal 7.12.1 Compiler (Type checker)
#3282 How to start an emacs editor within ghci asynchronously with :edit filename.hs :set editor emacs & don't go new lowest 7.12.1 GHCi
#10073 Idris REPL is pretty and we can too new normal GHCi
#9976 Ignore newlines in code diffs on Phab new low Trac & Git
#2893 Implement "Quantified contexts" proposal new normal Compiler
#9334 Implement "instance chains" new diatchki normal Compiler (Type checker)
#4479 Implement Dot as Postfix Function Apply new low 7.12.1 Compiler (Type checker)
#9617 Implement `quot` and `rem` using `quotRem`; implement `div` and `mod` using `divMod` new normal Compiler
#10071 Implement deprecation-warnings for class-methods to non-method transitions new normal 7.12.1 Compiler
#9476 Implement late lambda-lifting new nfrisby normal Compiler
#2595 Implement record update for existential and GADT data types new normal Compiler
#2895 Implement the "Class System Extension" proposal new normal Compiler
#307 Implicit Parameters and monomorphism new low None
#1532 Implicit parameters are not available in breakpoints new normal GHCi
#1885 Improve CPR analysis new lowest 7.12.1 Compiler
#7662 Improve GC of mutable objects new normal Runtime System
#2340 Improve Template Haskell error recovery new lowest 7.12.1 Template Haskell
#9908 Improve enumFromX support for OverloadedLists new ekmett normal 7.12.1 Core Libraries
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