{1} Bugs by priority (1526 matches)

Lists all open bugs in order of priority.

Results (201 - 300 of 1526)

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Ticket Summary Component Version Priority Severity Milestone Owner Status Created
#10117 Change the scheme for reporting redundant imports Compiler 7.8.4 normal new Feb 26, 2015
#13269 Changes in foreign code used in TH do not trigger recompilation Template Haskell 8.0.1 normal new Feb 11, 2017
#13507 Changes to environment files don't apply in GHCi on :reload GHCi 8.0.1 normal 8.4.1 new Apr 1, 2017
#10583 Chaos in Lexeme.hs Compiler 7.10.1 normal albertus new Jun 27, 2015
#10012 Cheap-to-compute values aren't pushed into case branches inducing unnecessary register pressure Compiler 7.8.4 normal bgamari new Jan 22, 2015
#13876 Check 'pure' method of 'Applicative (WrappedMonad m)' Compiler 8.0.1 normal new Jun 26, 2017
#12704 Check if constraint synonym satisfies functional dependencies Compiler (Type checker) 8.1 low new Oct 14, 2016
#10990 Checking whether a default declaration is an instance of a defaultable typeclass is broken Compiler (Type checker) 7.10.2 low new Oct 20, 2015
#13724 Clamping of llvm llc to -O1 and -O2 Compiler (LLVM) 8.3 normal 8.4.1 new May 19, 2017
#13728 Clarify the difference between NameL and NameU in Template Haskell Template Haskell 8.0.1 normal new May 19, 2017
#12187 Clarify the scoping of existentials for pattern synonym signatures Compiler 8.0.1 normal new Jun 12, 2016
#12640 Class member functions not substituted for MultiParamTypeClasses Compiler 8.0.1 normal new Sep 29, 2016
#10022 Clean up GHC.RTS.Flags Core Libraries 7.10.1-rc1 normal new Jan 26, 2015
#8510 Clear up what extensions are needed at a Template Haskell splice site Template Haskell 7.6.3 normal new Nov 8, 2013
#8327 Cmm sinking does not eliminate dead code in loops Compiler (CodeGen) 7.7 normal new Sep 18, 2013
#14072 Code generated by GHC 8.2.1 faster than 8.0.1 but still somewhat slower than 7.10.3 Compiler 8.2.1 normal new Aug 1, 2017
#13742 Code using ConstraintKinds needs explicit kind signature with GHC 8.2.1 Compiler (Type checker) 8.2.1-rc2 normal new May 22, 2017
#10062 Codegen on sequential FFI calls is not very good Compiler (CodeGen) 7.8.3 normal new Feb 3, 2015
#10185 Coercible solver incomplete with non-variable transitivity Compiler 7.11 low new Mar 23, 2015
#10184 Coercible solver incomplete with recursive newtypes Compiler 7.11 low new Mar 23, 2015
#13476 Coercion maching in RULES is fragile Compiler 8.0.1 normal new Mar 24, 2017
#12706 Collecting type info is slow GHCi 8.0.1 normal new Oct 14, 2016
#13676 Command line written to stats file by the rts is not executable Runtime System 8.0.2 normal new May 9, 2017
#3995 Comment delimiters ignored inside compiler pragma Compiler (Parser) 6.10.4 normal new Apr 19, 2010
#9631 Comment in GHC.Base about GHC.Prim does not appear to be correct Core Libraries 7.8.3 low new Sep 25, 2014
#2346 Compilation of large source files requires a lot of RAM Compiler 6.8.2 lowest major new Jun 5, 2008
#4012 Compilation results are not deterministic Compiler 6.12.2 high 8.4.1 niteria new Apr 24, 2010
#14380 Compile error for PatternSynonyms together with OverloadedLists Compiler 8.3 normal new Oct 22, 2017
#12506 Compile time regression in GHC 8. Compiler 8.0.1 high bgamari new Aug 20, 2016
#8484 Compile-time panic Compiler 7.6.3 normal new Oct 29, 2013
#13744 Compile-time regression in 8.2 when compiling bloodhound's test suite Compiler 8.2.1-rc2 normal new May 22, 2017
#13226 Compiler allocation regressions from top-level string literal patch Compiler 8.1 normal 8.4.1 new Feb 2, 2017
#13943 Compiler infinite loop with GHC-8.2 Compiler 8.2.1-rc3 high 8.2.3 dfeuer merge Jul 8, 2017
#14211 Compiler is unable to INLINE as well as the programmer can manually Compiler 8.2.1 normal new Sep 10, 2017
#13577 Compiler performance on open-symbology parser module regressed in GHC 8.2 Compiler 8.2.1-rc2 normal infoneeded Apr 14, 2017
#11293 Compiler plugins don't work with profiling Profiling 7.11 normal new Dec 26, 2015
#11546 Compiler warning: cast from pointer to integer of different size Compiler normal new Feb 5, 2016
#7258 Compiling DynFlags is jolly slow Compiler 7.6.1 normal simonpj new Sep 20, 2012
#11380 Compiling a 10.000 line file exhausts memory Compiler 7.10.3 normal new Jan 8, 2016
#14064 Compiling problem on FreeBSD 11 ("failed in phase") Compiler 8.2.1 normal infoneeded Jul 31, 2017
#14063 Compiling with --backpack with undefined dependency results in "the 'impossible' happened" Compiler 8.2.1 normal ezyang new Jul 30, 2017
#5262 Compiling with -O makes some expressions too lazy and causes space leaks Compiler 7.1 low new Jun 16, 2011
#13858 Compiling with LaTeX docs on Mint requires additional packages Build System 8.0.2 normal new Jun 21, 2017
#8591 Concurrent executions of ghc-pkg can cause inconstant package.cache files Package system 7.6.3 normal pgj new Dec 3, 2013
#11188 Confusing "parse error in pattern" for spurious indentation. Compiler (Parser) 7.10.1 high new Dec 9, 2015
#13766 Confusing "redundant pattern match" in 8.0, no warning at all in 8.2 Compiler 8.0.1 normal new May 29, 2017
#13254 Confusing error message from GHCI - "defined in multiple files" shows the same file GHCi 8.1 normal new Feb 9, 2017
#13582 Confusing error message with multiparameter type classes. Compiler 8.0.1 normal new Apr 15, 2017
#14147 Confusing error messages with PolyKinds and superclasses Compiler 8.2.1 normal new Aug 23, 2017
#13180 Confusing error when hs-boot abstract data implemented using synonym Compiler (Type checker) 8.1 low new Jan 24, 2017
#13421 Confusing error when using BangPatterns without pragma Compiler 8.0.1 normal new Mar 14, 2017
#11075 Confusing parallel spark behaviour with safe FFI calls Runtime System 7.10.2 normal patch Nov 10, 2015
#1928 Confusing type error message Compiler (Type checker) 6.8.1 low normal new Nov 25, 2007
#14381 Consider making ghc-pkg fill in abi-depends based on depends ghc-pkg 8.2.1 high new Oct 22, 2017
#9136 Constant folding in Core could be better Compiler 7.8.2 normal infoneeded May 23, 2014
#12005 Constraint instances not shown in `:info` Compiler 7.10.3 normal new May 2, 2016
#7543 Constraint synonym instances Compiler 7.6.1 normal new Jan 2, 2013
#11715 Constraint vs * Compiler (Type checker) 8.0.1-rc1 highest 8.4.1 goldfire new Mar 16, 2016
#9992 Constructor specialization requires eta expansion Compiler 7.8.4 normal new Jan 16, 2015
#13692 Constructors and such should be able to move around seq# sometimes Compiler 8.2.1-rc2 normal 8.4.1 new May 13, 2017
#14229 Contraditions in users_guide/using-warnings.html Documentation 8.2.1 low new Sep 13, 2017
#10328 Control.Monad exports lead to weird Haddocks Core Libraries 7.10.1 low new Apr 20, 2015
#13990 Core Lint error on empty case Compiler 8.2.1-rc3 highest 8.2.3 new Jul 17, 2017
#13223 Core Prep sometimes generates case of type lambda Compiler 8.1 normal lukemaurer new Feb 1, 2017
#14231 Core lint error "in result of Static argument" Compiler 8.2.1 normal new Sep 14, 2017
#14122 Core lint error while compiling GHC.IO.Handle Compiler 8.2.1 normal 8.4.1 new Aug 15, 2017
#13643 Core lint error with TypeInType and TypeFamilyDependencies Compiler 8.0.1 normal new May 4, 2017
#13900 Core lint in BuildFlavour=perf-llvm Compiler 8.3 high 8.4.1 bgamari new Jun 29, 2017
#13570 CoreFVs patch makes n-body slower Compiler 8.0.1 normal new Apr 13, 2017
#8982 Cost center heap profile restricted by biography of GHC segfaults Profiling 7.8.1 normal new Apr 10, 2014
#11271 Costly let binding gets duplicated in IO action value Compiler 7.10.2 normal new Dec 21, 2015
#7610 Cross compilation support for LLVM backend Compiler (LLVM) 7.6.1 normal new Jan 20, 2013
#9503 Cross compiling with mingw uses wrong gcc Build System 7.8.3 normal new Aug 22, 2014
#7621 Cross-build for QNX ARM smashes stack when using FunPtr wrappers Compiler (FFI) 7.7 normal infoneeded Jan 24, 2013
#8378 Cross-compiling from x86_64-unknown-linux-gnu to x86_64-sun-solaris2 with mkGmpConstants workaround fails to build objects for integer-gmp Build System normal new Sep 28, 2013
#10346 Cross-module SpecConstr Compiler 7.10.1 normal 8.4.1 new Apr 23, 2015
#12454 Cross-module specialisation of recursive functions Compiler 8.0.1 normal new Aug 3, 2016
#12180 Ctrl-c during build produces *some* outputs for a file, and GHC --make fails handling this Driver 7.10.3 low new Jun 10, 2016
#14141 Custom type errors don't trigger when matching on a GADT constructor with an error in the constraint Compiler (Type checker) 8.0.2 normal new Aug 21, 2017
#3903 DPH bad sliceP causes RTS panic "allocGroup: requested zero blocks" Data Parallel Haskell 6.13 low benl new Mar 1, 2010
#5807 DPH library functions don't work without -fvectorise. Data Parallel Haskell 7.2.2 normal benl new Jan 23, 2012
#3782 Data Parallel "Impossible happened" compiler error Data Parallel Haskell 6.12.1 low benl new Dec 23, 2009
#14048 Data instances of kind Constraint Compiler 8.0.1 normal new Jul 28, 2017
#13689 Data.Either doesn't export INLINABLE short functions like "rights" Core Libraries 8.0.2 normal new May 12, 2017
#9936 Data.Fixed truncates 5.17 to 5.16 libraries/base 7.6.3 normal patch Dec 29, 2014
#12689 DataCon wrappers get in the way of rules Compiler 8.0.1 normal new Oct 11, 2016
#11957 DataKinds: lifting constructors whose identifier is a single character Compiler 8.1 normal new Apr 19, 2016
#14042 Datatypes cannot use a type family in their return kind Compiler (Type checker) 8.0.1 normal new Jul 27, 2017
#8487 Debugger confuses variables GHCi 7.7 normal new Oct 30, 2013
#13726 Declaring GADT constructor and associated data family with the same name gives weird error Compiler (Type checker) 8.0.1 normal infoneeded May 19, 2017
#7336 Defined but not used is not detected for data types with instances Compiler 7.6.1 normal new Oct 16, 2012
#14002 Defining a function in GHCi results in different strictness behavior than defining it in a file Compiler 8.0.1 normal new Jul 20, 2017
#10065 Definition of fix lacks commentary Core Libraries 7.11 normal dfeuer new Feb 4, 2015
#12817 Degraded performance with constraint synonyms Compiler 8.0.1 normal new Nov 8, 2016
#8036 Demand analyser is unpacking too deeply Compiler 7.7 normal simonpj new Jul 4, 2013
#13731 DeriveFunctor and friends don't understand type families Compiler 8.2.1-rc2 normal infoneeded May 20, 2017
#1544 Derived Read instances for recursive datatypes with infix constructors are too inefficient Compiler 6.6.1 normal normal new Jul 18, 2007
#5642 Deriving Generic of a big type takes a long time and lots of space Compiler 7.3 normal new Nov 17, 2011
#10980 Deriving Read instance from datatype with N fields leads to N^2 code size growth Compiler 7.10.2 normal new Oct 16, 2015
#14332 Deriving clauses can have forall types Compiler (Type checker) 8.2.1 normal new Oct 7, 2017
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