{3} Feature requests by priority (509 matches)

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Ticket Summary Component Version Priority Severity Milestone Owner Status Created
#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
#8473 Generate table of cost-centre numbers with source locations Profiling 7.6.3 normal new Oct 23, 2013
#8477 Allow inferring ambiguous types Compiler (Type checker) 7.6.3 normal new Oct 25, 2013
#8494 Warn if a pattern guard obviates all others Compiler 7.6.3 normal new Nov 1, 2013
#8501 Improve error message when using rec/mdo keyword without RecursiveDo extention. Compiler (Parser) 7.6.3 normal new Nov 4, 2013
#8583 Associated pattern synonyms Compiler normal new Dec 1, 2013
#8596 Add support for "reponse files" to workaround Windows command line length limitations Compiler 7.6.3 normal new Dec 5, 2013
#8605 Alternative, guard-like syntax for view patterns Compiler normal new Dec 10, 2013
#8642 Allow GHCi to print non-pretty forms of things. GHCi 7.9 normal new Dec 30, 2013
#8643 Silent name shadowing Compiler 7.4.1 normal new Dec 31, 2013
#8673 GHC could generate GADT record selectors in more cases Compiler 7.6.3 normal new Jan 17, 2014
#8679 Extend FunD data constructor with information about type signature Template Haskell 7.7 normal new Jan 18, 2014
#8685 -split-objs doesn't work for executables Driver 7.6.3 normal new Jan 20, 2014
#8697 Type rationals Compiler 7.6.3 normal new Jan 25, 2014
#8779 Exhaustiveness checks for pattern synonyms Compiler (Type checker) 7.6.3 normal new Feb 13, 2014
#8809 Prettier error messages? Compiler 7.9 normal new Feb 20, 2014
#8812 Make *_stub.c files available again Driver 7.6.3 normal new Feb 20, 2014
#8816 Make SPARC registerised again. Compiler normal new Feb 22, 2014
#8822 Allow -- ^ Haddock syntax on record constructors Compiler (Parser) 7.9 normal new Feb 25, 2014
#8875 Track Exceptions Compiler normal new Mar 11, 2014
#8903 Add dead store elimination Compiler 7.9 normal new Mar 16, 2014
#8914 Remove unnecessary constraints from MonadComprehensions and ParallelListComp Compiler (Type checker) normal new Mar 19, 2014
#8924 Text.ParserCombinators.ReadP needs some kind of "commit" or "cut" to force a single parse.. Compiler 7.6.3 normal new Mar 23, 2014
#8927 Multiple case match at once Compiler (Parser) 7.8.1-rc2 normal new Mar 25, 2014
#8930 GHC API: List of available Pragmas GHC API 7.6.3 normal new Mar 26, 2014
#8944 Warn instead of stopping on misplaced Haddock comments Compiler (Parser) 7.9 normal new Mar 31, 2014
#8955 Syscall intrinsic Compiler 7.6.3 normal new Apr 4, 2014
#8967 Add syntax for creating finite maps and sets Compiler 7.6.3 normal new Apr 7, 2014
#8989 nofib should record and report more fine-grained binary size information NoFib benchmark suite 7.9 normal new Apr 12, 2014
#8996 mark more things as const in C codegen Compiler (CodeGen) 7.8.2 normal new Apr 14, 2014
#9015 A documented way to differentiate between statements, declarations, imports, etc. GHC API 7.8.2 normal new Apr 20, 2014
#9030 An async exception handler that blocks throwTo until handler finishes running Compiler 7.8.2 normal new Apr 23, 2014
#9037 Add option to make selected warnings errors Compiler 7.8.2 normal new Apr 24, 2014
#9051 Report heap profile data in eventlog Profiling 7.9 normal new Apr 29, 2014
#9091 print and/or apply constraints when showing info for typed holes Compiler (Type checker) 7.8.2 normal new May 8, 2014
#9112 support for deriving Vector/MVector instances Compiler 7.8.2 normal new May 15, 2014
#9119 Additional symbols for XUnicodeSyntax Compiler (Parser) 7.8.2 normal infoneeded May 16, 2014
#9137 A way to match RULES only for literals Compiler 7.8.2 normal new May 23, 2014
#9183 GHC shouldn't expand constraint synonyms Compiler 7.8.2 normal new Jun 8, 2014
#9192 Add sameByteArray# Compiler 7.8.2 normal new Jun 10, 2014
#9197 FFI types should be usable in foreign import decls without revealing representations Compiler (FFI) 7.8.2 normal new Jun 11, 2014
#9214 UNPACK support for sum types Compiler 7.8.2 normal new Jun 18, 2014
#9244 Compiler could warn about type variable shadowing, and hint about ScopedTypeVariables Compiler 7.6.3 normal new Jun 27, 2014
#9269 Type families returning quantified types Compiler 7.8.2 normal new Jul 5, 2014
#9291 Don't reconstruct sum types if the type subtly changes Compiler 7.8.2 normal new Jul 10, 2014
#9319 nofib-analyze doesn’t provide per-benchmark compile time/alloc numbers NoFib benchmark suite 7.8.2 normal new Jul 16, 2014
#9328 MINIMAL pragma should supprt negation Compiler 7.8.3 normal new Jul 18, 2014
#9350 Consider using xchg instead of mfence for CS stores Compiler (NCG) 7.9 normal new Jul 23, 2014
#9351 add ability to version symbols .c for packages with C code Compiler 7.8.3 normal new Jul 23, 2014
#9365 Make command key in GHCi configurable GHCi 7.8.3 normal new Jul 25, 2014
#9376 More informative error messages when closed type families fail to simplify Compiler (Type checker) 7.8.2 normal new Jul 29, 2014
#9378 Make unknown LANGUAGE pragmas a warning, not an error Compiler 7.8.2 normal new Jul 29, 2014
#9427 Do finer-grained dependency analysis to infer more general kinds on type/class declarations Compiler (Type checker) 7.8.2 normal new Aug 8, 2014
#9429 Alternative to type family Any Compiler 7.9 normal new Aug 10, 2014
#9430 implement more arithmetic operations natively in the LLVM backend Compiler (LLVM) 7.9 normal new Aug 10, 2014
#9431 integer-gmp small Integer multiplication does two multiplications on x86 Compiler (NCG) 7.9 normal new Aug 11, 2014
#9441 CSE should deal with letrec Compiler 7.8.2 normal new Aug 14, 2014
#9478 Partial type signatures Compiler 7.8.2 normal new Aug 20, 2014
#9571 nofib should use criterion-style bootstrapping/sampling NoFib benchmark suite 7.9 normal new Sep 10, 2014
#9611 Suggest the cause of "No instance" errors involving multiple versions of a package Compiler 7.8.3 normal new Sep 19, 2014
#9613 when giving an error "No instance for C (a -> b)", suggest that a function may be underapplied Compiler (Type checker) 7.8.3 normal new Sep 19, 2014
#9617 Implement `quot` and `rem` using `quotRem`; implement `div` and `mod` using `divMod` Compiler 7.9 normal new Sep 19, 2014
#9622 GHCi command to solve a constraint Compiler (Type checker) 7.8.3 normal new Sep 21, 2014
#9624 "Unlikely constraint" recognition Compiler (Type checker) 7.8.3 normal new Sep 22, 2014
#9632 Promotable type synonyms (or: synonyms to promoted types) Compiler (Type checker) normal new Sep 25, 2014
#9637 Type level programming needs an error function Compiler 7.8.3 normal new Sep 26, 2014
#9642 LANGUAGE pragma synonyms Compiler 7.9 normal new Sep 28, 2014
#9645 Optimize range checks for primitive types Compiler 7.9 normal new Sep 29, 2014
#9659 Offer branchless conditional (CMOV) primop Compiler 7.8.3 normal new Oct 2, 2014
#9667 Type inference is weaker for GADT than analogous Data Family Compiler (Type checker) 7.8.3 normal new Oct 5, 2014
#9688 Improve the interaction between CSE and the join point transformation Compiler 7.9 normal new Oct 13, 2014
#9690 in GHCi map `:editNNN` to $EDITOR +NNN GHCi 7.8.3 normal new Oct 13, 2014
#9699 TH function to list names in scope Template Haskell 7.8.3 normal new Oct 16, 2014
#9702 Offer a weaker name shadowing warning Compiler 7.9 normal new Oct 18, 2014
#9731 Inductive type definitions on Nat Compiler 7.8.3 normal new Oct 27, 2014
#9756 Warn about unnecessary unsafeCoerce Compiler (Type checker) 7.9 normal new Nov 3, 2014
#9784 Improve error message for misplaced quote inside promoted qualified type Compiler (Parser) 7.8.3 normal new Nov 8, 2014
#9790 Produce coercion rules for derived Functor instances Compiler 7.9 normal new Nov 11, 2014
#9819 Create typesafe method of obtaining dictionary types from class definitions, and constraint objects from dictionary types Compiler normal new Nov 21, 2014
#9835 Add bindings for marshaling to/from mpz_t libraries (other) 7.8.3 normal new Nov 25, 2014
#9887 No message when GCHI reusing compiled code GHCi 7.8.3 normal new Dec 15, 2014
#9898 Wanted: higher-order type-level programming Compiler (Type checker) 7.8.3 normal new Dec 18, 2014
#9931 Option to truncate Show output in ghci REPL Compiler 7.8.4 normal new Dec 27, 2014
#9938 GHC's link step needs to be told which packages to link Compiler 7.11 normal new Dec 29, 2014
#9948 Recommend class constraint instead of instance constraint Compiler 7.8.4 normal new Jan 1, 2015
#9952 Add -g<level> Compiler 7.8.4 normal new Jan 2, 2015
#9974 Allow more general structural recursion without UndecidableInstances Compiler (Type checker) 7.11 normal new Jan 9, 2015
#9990 Top level module identifiers shadow imported identifiers Compiler normal new Jan 15, 2015
#9993 PostfixOperators doesn't work for types Compiler 7.8.4 normal new Jan 16, 2015
#9995 :info enhancements GHCi 7.8.4 normal new Jan 16, 2015
#9996 Support symbols in GHCi tab completion GHCi 7.8.4 normal new Jan 16, 2015
#10006 Add baseline ellipsis as unicode alternative to «..» Compiler (Parser) 7.8.4 normal new Jan 19, 2015
#10016 UNPACK support for existentials Compiler 7.8.4 normal new Jan 23, 2015
#10049 Lower level memcpy primop Compiler 7.8.4 normal new Jan 30, 2015
#10064 Add support for "foo"## literals to MagicHash Compiler 7.8.4 normal new Feb 4, 2015
#10073 Idris REPL is pretty and we can too GHCi 7.8.4 normal new Feb 9, 2015
#10076 Don't suppress warnings in the presence of errors Compiler 7.11 normal new Feb 10, 2015
#10084 Data.List should have a takeLastN function libraries/base 7.8.4 normal new Feb 12, 2015
#10087 DefaultSignatures: error message mentions internal name Compiler (Type checker) 7.8.4 normal new Feb 14, 2015
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