{3} Feature requests by priority (509 matches)

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Ticket Summary Component Version Priority Severity Milestone Owner Status Created
#4879 Deprecate exports Compiler 7.0.1 high 7.12.1 new Jan 5, 2011
#8299 Add richer data model address arithmetic: AddrDiff and AddrInt (ie d Int_ptr_diff and Int_ptr_size) Compiler 7.6.3 high 7.12.1 new Sep 14, 2013
#8364 equip GHC with an accurate internal model of floating point Compiler 7.6.3 high 7.12.1 new Sep 26, 2013
#8634 Relax functional dependency coherence check ("liberal coverage condition") Compiler 7.7 high 7.12.1 new Dec 27, 2013
#10067 The Read Integer instance is too slow Core Libraries 7.11 high 7.12.1 new Feb 6, 2015
#4426 Simplify the rules for implicit quantification Compiler 6.12.3 highest 7.12.1 new Oct 22, 2010
#3517 GHC has lots of extra hidden IOErrorType values Core Libraries low normal new Sep 15, 2009
#8161 Associated type parameters that are more specific than the instance header Compiler (Type checker) 7.7 low new Aug 23, 2013
#8207 Pretty Printer for textual version of Language (name) in DynFlags GHC API 7.7 low new Sep 1, 2013
#8441 Allow family instances in an hs-boot file Compiler 7.7 low ezyang new Oct 13, 2013
#8516 Add (->) representation and the Invariant class to GHC.Generics Compiler (Type checker) 7.7 low new Nov 9, 2013
#8619 Support anonymous string literals in C-- (OR) give better ASSERT failure messages in C-- Compiler 7.7 low new Dec 20, 2013
#8707 Kind inference fails in data instance definition Compiler 7.7 low new Jan 27, 2014
#8997 Warn about unused parameters in recursive definitions Compiler 7.8.2 low new Apr 15, 2014
#9118 Can't eta-reduce representational coercions Compiler 7.8.2 low new May 15, 2014
#9182 Empty case analysis for function clauses Compiler 7.8.2 low new Jun 7, 2014
#9385 Additions to Control.Monad Core Libraries 7.8.2 low ekmett infoneeded Jul 30, 2014
#9392 "\n" is displayed weirdly in error messages Compiler 7.8.3 low new Aug 1, 2014
#9479 Report required constraints when reporting the type of a hole Compiler (Type checker) 7.8.3 low new Aug 20, 2014
#9498 GHC links against unversioned .so files Compiler (FFI) 7.6.3 low new Aug 21, 2014
#9518 Improve error message for unacceptable role annotations Compiler (Type checker) 7.8.3 low infoneeded Aug 28, 2014
#9685 GHC fails to build with mingw32-make on Windows Build System 7.9 low gintas new Oct 12, 2014
#9748 Disambiguate IO actions in GHCi with :set +t GHCi 7.8.2 low zudov new Oct 31, 2014
#9864 Need realloc/resize feature for mallocForeignPtrBytes allocated memory Core Libraries 7.8.3 low ekmett new Dec 4, 2014
#9946 Expose the source location of template-haskell Names Compiler 7.11 low new Dec 31, 2014
#9976 Ignore newlines in code diffs on Phab Trac & Git 7.8.4 low new Jan 11, 2015
#10055 Offer PolyKinded instances for Data.Fixed.HasResolution libraries/base 7.8.4 low new Feb 1, 2015
#10150 Suppress orphan instance warning per instance Compiler (Type checker) 7.11 low new Mar 9, 2015
#10153 GHC mode for converting files to explicit layout Compiler (Parser) 7.11 low new Mar 11, 2015
#10162 Add unicode syntax for banana brackets Compiler 7.8.4 low new Mar 16, 2015
#10324 our rts/ghc-prim/base shared library tricks don't work on Android Compiler 7.10.1 low new Apr 18, 2015
#10331 Accept HsSyn in splices and generate it in quotes (ghc-api) Template Haskell 7.11 low new Apr 20, 2015
#10391 Ability to get export list of TH reified module Template Haskell low new May 7, 2015
#2614 Enumeration of values for `Sys.Info.os`, `Sys.Info.arch` Core Libraries 6.8.3 low minor 7.12.1 mjg new Sep 20, 2008
#3052 ghc FFI doesn't support thiscall Compiler (FFI) 6.10.1 low normal 7.12.1 new Feb 27, 2009
#3372 Allow for multiple linker instances Compiler low normal 7.12.1 new Jul 14, 2009
#3427 control what sort of entity a deprecated pragma applies to Compiler 6.10.4 low normal 7.12.1 new Aug 12, 2009
#3464 Find import declaration importing a certain function GHCi 6.10.4 low normal 7.12.1 new Aug 26, 2009
#3483 Some mechanism for eliminating "absurd" patterns Compiler 6.10.4 low normal 7.12.1 new Sep 3, 2009
#3547 Improve granularity of UndecidableInstances Compiler 6.10.4 low normal 7.12.1 new Sep 28, 2009
#3619 allow to set ghc search path globally (a'la CPATH) Compiler 6.10.4 low normal 7.12.1 new Oct 28, 2009
#3632 lift restrictions on records with existential fields, especially in the presence of class constraints Compiler 6.10.4 low normal 7.12.1 new Nov 2, 2009
#3645 Layout and pragmas Compiler (Parser) 6.10.4 low normal 7.12.1 new Nov 7, 2009
#3699 Wildcards in type functions Compiler (Type checker) 6.10.4 low 7.12.1 dalaing new Nov 27, 2009
#3701 allow existential wrapper newtypes Compiler (Type checker) 6.10.4 low 7.12.1 new Nov 28, 2009
#3744 Comparisons against minBound/maxBound not optimised for (Int|Word)(8|16|32) Compiler 6.13 low 7.12.1 new Dec 11, 2009
#3753 Make ghci's -l option consistent with GNU ld's -l option GHCi 6.12.1 low 7.12.1 new Dec 15, 2009
#3786 showing function arguments when stopped at its definition GHCi 6.12.1 low 7.12.1 new Dec 25, 2009
#3869 RTS GC Statistics from -S should be logged via the eventlog system Runtime System 6.12.1 low 7.12.1 new Feb 8, 2010
#3895 "Fix" pervasive-but-unnecessary signedness in GHC.Prim Compiler low 7.12.1 new Feb 22, 2010
#3980 System.Posix.Signals should provide a way to set the SA_NOCLDWAIT flag Core Libraries 6.12.1 low 7.12.1 ekmett new Apr 11, 2010
#4016 Strange display behaviour in GHCi Compiler 6.12.2 low 7.12.1 new Apr 26, 2010
#4020 Please consider adding support for local type synonyms Compiler (Type checker) 6.12.2 low 7.12.1 new Apr 27, 2010
#4052 Two sided sections Compiler (Parser) 6.12.2 low 7.12.1 new May 7, 2010
#4096 New primops for indexing: index*OffAddrUsing# etc Compiler 6.12.2 low 7.12.1 new May 25, 2010
#4114 Add a flag to remove/delete intermediate files generated by GHC Compiler 6.10.4 low 7.12.1 VictorDenisov new Jun 2, 2010
#4180 do not consider associativity for unary minus for fixity resolution Compiler (Parser) 6.12.3 low 7.12.1 new Jul 8, 2010
#4213 LLVM: Add support for TNTC to LLVM compiler suite Compiler (LLVM) 6.13 low 7.12.1 dterei new Jul 23, 2010
#4222 Template Haskell lets you reify supposedly-abstract data types Template Haskell 6.12.3 low 7.12.1 new Jul 26, 2010
#4316 Interactive "do" notation in GHCi GHCi 7.0.3 low 7.12.1 new Sep 15, 2010
#4329 GHC.Conc modifyTVar primitive Core Libraries 6.12.3 low 7.12.1 ekmett new Sep 21, 2010
#4340 Add alignment to hsc2hs template Compiler (FFI) 6.12.3 low 7.12.1 new Sep 25, 2010
#4442 Add unaligned version of indexWordArray# Compiler 7.1 low 7.12.1 ekmett new Oct 26, 2010
#4453 Allow specifying .hi files of imports on command line in batch mode Compiler 6.12.3 low 7.12.1 new Oct 29, 2010
#4459 Polymorphic Data.Dynamic GHC API 7.1 low 7.12.1 vivian new Oct 31, 2010
#4466 Add extension for type application Compiler 6.12.3 low 7.12.1 new Nov 2, 2010
#4479 Implement Dot as Postfix Function Apply Compiler (Type checker) 7.5 low 7.12.1 new Nov 6, 2010
#4520 startup code on Windows should use SetDllDirectory("") Runtime System 7.0.1 low 7.12.1 new Nov 22, 2010
#4806 Make error message more user friendly when module is not found because package is unusable Compiler 7.0.1 low 7.12.1 infoneeded Nov 30, 2010
#4815 Instance constraints should be used when deriving on associated data types Compiler 6.12.3 low 7.12.1 new Dec 3, 2010
#4823 Loop strength reduction for array indexing Compiler 7.1 low 7.12.1 new Dec 7, 2010
#4913 Make event tracing conditional on an RTS flag only Runtime System 7.0.1 low 7.12.1 new Jan 21, 2011
#4955 increase error message detail for module lookups failure due to hi references Package system 6.12.1 low 7.12.1 new Feb 11, 2011
#4959 Warning about variables with leading underscore that are used anyway Compiler (Parser) 7.0.1 low 7.12.1 new Feb 14, 2011
#4980 Warning about module abbreviation clashes Compiler 7.0.1 low 7.12.1 new Feb 24, 2011
#5016 Make Template Haskell: -ddump-splices generate executable code Template Haskell 7.0.2 low 7.12.1 new Mar 12, 2011
#5059 Pragma to SPECIALISE on value arguments Compiler 7.0.3 low 7.12.1 new Mar 29, 2011
#5073 Add blockST for nested ST scopes Compiler 7.0.3 low 7.12.1 new Apr 1, 2011
#5171 Misfeature of Cmm optimiser: no way to extract a branch of expression into a separate statement Compiler 7.0.3 low 7.12.1 new May 6, 2011
#5197 Support static linker semantics for archives and weak symbols Runtime System 7.0.3 low 7.12.1 new May 13, 2011
#5219 need a version of hs_init that returns an error code for command-line errors Runtime System 7.0.3 low 7.12.1 new May 25, 2011
#5266 Licensing requirements and copyright notices None low 7.12.1 new Jun 19, 2011
#5273 error and undefined should print a location Compiler 7.1 low 7.12.1 new Jun 24, 2011
#5288 Less noisy version of -fwarn-name-shadowing Compiler 7.0.3 low 7.12.1 new Jun 28, 2011
#5296 Add explicit type applications Compiler (Type checker) 7.0.3 low 7.12.1 new Jul 3, 2011
#5918 hsc2hs forces wordsize (i.e. -m32 or -m64) to be the choice of GHC instead of allowing a different (or no/default choice) hsc2hs 7.4.1 low 7.12.1 new Mar 7, 2012
#10063 State a law for foldMap Core Libraries 7.10.1-rc1 low 7.12.1 ekmett new Feb 3, 2015
#307 Implicit Parameters and monomorphism None None low minor new Feb 16, 2005
#989 Build GHC on Windows using Microsoft toolchain Build System low normal new Nov 6, 2006
#1192 GHC-only IOErrorType constructors, and is*Error(Type) functions Compiler 6.6 low minor new Mar 4, 2007
#1231 deprecation warnings are reported too often Compiler 6.6 low normal simonpj new Mar 16, 2007
#1311 newtypes of unboxed types disallowed - documentation bug and/or feature request Compiler 7.7 low normal new Apr 29, 2007
#1388 Newbie help features GHCi 6.6.1 low trivial new May 28, 2007
#1628 warning(s) for using stolen syntax that's not currently enabled Compiler 6.6.1 low normal new Aug 22, 2007
#1768 More flexible type signatures for data constructors Compiler 6.6.1 low normal new Oct 10, 2007
#2465 Fusion of recursive functions Compiler 6.8.2 low normal new Jul 24, 2008
#2708 Error message should suggest UnboxedTuples language extension Compiler (Parser) 6.9 low minor new Oct 18, 2008
#2896 Warning suggestion: argument not necessarily a binary operator Compiler 6.10.1 low normal new Dec 24, 2008
#5082 Emit warnings when conflicting flags are supplied Compiler 7.1 low new Apr 3, 2011
#7977 Optimization: Shift dropped list heads by coeffecient to prevent thunk generation Compiler 7.4.2 low new Jun 11, 2013
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