{1} Bugs by priority (1068 matches)

Lists all open bugs in order of priority.

Results (501 - 600 of 1068)

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Ticket Summary Component Version Priority Severity Milestone Owner Status Created
#10490 Missing binder type check in coercion equality test? Compiler (Type checker) 7.11 normal new Jun 5, 2015
#11032 Missing result type handling for State# s in foreign import prim. Compiler (FFI) 7.10.2 normal new Oct 28, 2015
#5267 Missing type checks for arrow command combinators Compiler (Type checker) 7.0.3 low ross new Jun 22, 2011
#1620 ModBreaks.modBreaks_array not initialised GHCi 7.8.2 normal normal new Aug 19, 2007
#9717 More lazy orphan module loading Compiler (Type checker) 7.9 normal ezyang new Oct 24, 2014
#11630 More precise LANGUAGE pragma when forall is used Compiler (Type checker) 8.1 low new Feb 23, 2016
#11536 Multitude of different error messages when installed package is missing a module Compiler 7.10.3 normal new Feb 4, 2016
#2374 MutableByteArray# is slower than Addr# Compiler (NCG) 6.8.2 lowest minor new Jun 18, 2008
#9041 NCG generates slow loop code Compiler (NCG) 7.6.3 normal new Apr 27, 2014
#9388 Narrow the scope of the notorious "state hack" Compiler 7.8.2 normal new Jul 31, 2014
#8971 Native Code Generator for 7.8 is not as optimized as 7.6.3... Compiler (NCG) 7.8.1-rc2 normal new Apr 8, 2014
#10878 Near doubling of generated code size for compiler/cmm/PprC.hs with commit 5d57087e31 Compiler 7.11 normal 8.2.1 new Sep 14, 2015
#11786 Need -fno-print-explicit-runtime-reps to work on IfaceType, else RuntimeRep leaks Compiler 7.10.3 normal new Apr 4, 2016
#9123 Need for higher kinded roles Compiler (Type checker) 7.8.2 normal goldfire new May 19, 2014
#11571 Need more intelligent conditionalization of libgcc rts symbols for x32 Runtime System (Linker) 8.1 normal new Feb 12, 2016
#2289 Needless reboxing of values when returning from a tight loop Compiler 6.8.2 lowest normal new May 17, 2008
#10411 Neighbour let-bindings are not reported as relevant Compiler 7.10.1 normal new May 12, 2015
#7930 Nested STM Invariants are lost Runtime System 7.6.3 normal fryguybob new May 24, 2013
#7198 New codegen more than doubles compile time of T3294 Compiler (CodeGen) 7.4.2 normal simonmar new Aug 29, 2012
#3872 New way to make the simplifier diverge Compiler 6.12.1 normal new Feb 10, 2010
#11722 No TypeRep for unboxed tuples Compiler 8.1 normal new Mar 19, 2016
#9509 No automatic specialization of inlinable imports in 7.8 Compiler 7.8.3 normal new Aug 23, 2014
#10746 No non-exhaustive pattern match warning given for empty case analysis Compiler 7.10.2 normal patch Aug 6, 2015
#8871 No-op assignment I64[BaseReg + 784] = I64[BaseReg + 784]; is generated into optimized Cmm Compiler (CodeGen) 7.9 normal new Mar 10, 2014
#4899 Non-standard compile plus Template Haskell produces spurious "unknown symbol" linker error GHCi 7.0.1 low simonmar new Jan 18, 2011
#10482 Not enough unboxing happens on data-family function argument Compiler 7.10.1 normal new Jun 4, 2015
#10647 Notice about lack of SIMD support. Compiler 7.8.4 normal new Jul 17, 2015
#10808 Odd interaction between record update and type families Compiler (Type checker) 7.10.2 normal new Aug 29, 2015
#8399 Of Bird tacks and non-blank blank lines Compiler 7.6.3 low new Oct 2, 2013
#11695 On GHCi prompt the arrow (movement) keys create strange character sequences GHCi 8.1 normal infoneeded Mar 10, 2016
#8198 One-shot mode is buggy w.r.t. hs-boot files Driver 7.7 normal parcs new Aug 30, 2013
#10337 One-shot module loops have hard to understand messages Compiler (Type checker) 7.11 normal new Apr 21, 2015
#10005 Operations on string literals won't be inlined Compiler 7.8.4 normal new Jan 19, 2015
#7596 Opportunity to improve CSE Compiler 7.6.1 normal simonpj new Jan 16, 2013
#1168 Optimisation sometimes decreases sharing in IO code Compiler 6.6 normal normal new Feb 23, 2007
#1498 Optimisation: eliminate unnecessary heap check in recursive function Compiler 6.6.1 low normal new Jul 6, 2007
#4301 Optimisations give bad core for foldl' (flip seq) () Compiler 6.12.3 low new Sep 10, 2010
#2132 Optimise nested comparisons Compiler 6.8.2 normal normal new Feb 28, 2008
#11792 Optimised unsafe FFI call can get wrong argument Compiler 7.10.3 high new Apr 5, 2016
#11382 Optimize Data.Char Core Libraries 7.10.3 normal 8.2.1 new Jan 8, 2016
#2387 Optimizer misses unboxing opportunity Compiler 6.8.2 lowest minor new Jun 19, 2008
#8629 Option 'split-objs' being ignored when trying to reduce object code size in iOS cross-compilation Compiler 7.6.3 normal new Dec 25, 2013
#8363 Order matters for unused import warnings when reexporting identifiers Compiler 7.7 normal new Sep 26, 2013
#8082 Ordering of assembly blocks affects performance Compiler (NCG) 7.6.3 normal new Jul 22, 2013
#3107 Over-eager GC when blocked on a signal in the non-threaded runtime Runtime System 6.10.1 lowest normal new Mar 17, 2009
#11197 Overeager deferred type errors Compiler (Type checker) 7.11 normal 8.0.2 goldfire new Dec 11, 2015
#10526 Overlapping instances, incoherence, and optimisation Compiler 7.10.1 normal new Jun 15, 2015
#11272 Overloaded state-monadic function is not specialised Compiler 7.10.3 normal new Dec 21, 2015
#9809 Overwhelming the TimerManager Runtime System 7.10.1 normal simonmar new Nov 18, 2014
#10617 Panic in GHCi debugger with GADTs, PolyKinds and Phantom types GHCi 7.10.1 normal new Jul 8, 2015
#9046 Panic in GHCi when using :print GHCi 7.8.2 normal new Apr 28, 2014
#10616 Panic in ghci debugger with PolyKinds and PhantomTypes GHCi 7.10.1 normal new Jul 8, 2015
#7078 Panic using mixing list with parallel arrays incorrectly Compiler 7.4.1 normal chak new Jul 16, 2012
#12007 Panic when loading file with nested pattern synonyms into ghci Compiler 8.1 normal merge May 3, 2016
#10173 Panic: Irrefutable pattern failed for pattern Data.Maybe.Just Compiler 7.8.4 normal new Mar 20, 2015
#10187 Panic: RegAlloc.Liveness.computeLivenss; SCCs aren't in reverse dependent order; bad blockId c8xHd Compiler 7.8.4 normal new Mar 24, 2015
#7380 Panic: mkNoTick: Breakpoint loading modules with -O2 via API GHC API 7.4.1 normal new Nov 1, 2012
#9219 Parallel build proceeds despite errors Driver 7.8.2 normal new Jun 19, 2014
#12062 Parallel make with -j0 and hs-boot leads to floating point exception Runtime System 8.0.1-rc2 low new May 15, 2016
#6034 Parse error when using ' with promoted kinds Compiler (Parser) 7.5 low new Apr 23, 2012
#8956 Parser error shadowed by "module ‘main:Main’ is defined in multiple files" error Compiler 7.8.1-rc2 normal new Apr 4, 2014
#10998 Parser should suggest -XMagicHash Compiler (Parser) 7.10.2 low new Oct 21, 2015
#4043 Parsing of guards, and type signatures Compiler (Parser) 6.12.2 normal new May 4, 2010
#3766 Parsing of lambdas is not consistent with Haskell'98 report. Compiler (Parser) 6.10.4 low new Dec 16, 2009
#10783 Partial type signatures should work in pattern synonym signatures Compiler 7.10.2 normal mpickering new Aug 20, 2015
#11515 PartialTypeSignatures suggests a redundant constraint with constraint families Compiler 8.1 normal new Jan 29, 2016
#11822 Pattern match checker exceeded (2000000) iterations Compiler 8.0.1-rc3 normal gkaracha new Apr 11, 2016
#12026 Pattern match failure in RnNames.hs Compiler 8.0.1 highest 8.0.2 mpickering merge May 7, 2016
#11984 Pattern match incompleteness / inaccessibility discrepancy Compiler 8.1 normal new Apr 26, 2016
#11527 Pattern match translation suboptimal Compiler 7.8.3 normal new Feb 2, 2016
#11368 Pattern synonym name is mangled when patterns are non-exhaustive Compiler 8.1 low mpickering new Jan 7, 2016
#10807 PatternGuards and MultiWayIf layout rules Compiler (Parser) 7.10.2 lowest new Aug 28, 2015
#9088 Per-thread Haskell thread list/numbering (remove global lock from thread allocation) Runtime System 7.9 low simonmar new May 7, 2014
#9944 Performance issue re: simple loop Compiler 7.8.3 low new Dec 31, 2014
#11029 Performance loss due to eta expansion Compiler 7.10.2 normal new Oct 28, 2015
#11226 Performance regression (involving sum, map, enumFromThenTo) Compiler 7.10.3 normal new Dec 15, 2015
#5954 Performance regression 7.0 -> 7.2 (still in 7.4) Compiler 7.4.1 normal simonpj infoneeded Mar 20, 2012
#9979 Performance regression GHC 7.8.4 to GHC HEAD Compiler 7.11 normal new Jan 13, 2015
#10992 Performance regression due to lack of inlining of `foldl` and `foldl'`. Core Libraries 7.10.2 normal new Oct 20, 2015
#6166 Performance regression in mwc-random since 7.0.x Compiler 7.4.2 high 8.2.1 new Jun 15, 2012
#12032 Performance regression with large numbers of equation-style decls Compiler 7.10.3 normal new May 7, 2016
#10840 Periodic alarm signals can cause a retry loop to get stuck Compiler 7.10.2 high 8.2.1 bgamari new Sep 4, 2015
#3231 Permission denied error with runProcess/openFile Core Libraries 6.10.4 normal normal simonmar new May 15, 2009
#11587 Place shared objects in LIBDIR Package system 7.10.3 normal 8.2.1 new Feb 16, 2016
#10301 Plugins/dynamic loading subtly broken (it seems) Compiler 7.8.2 normal new Apr 14, 2015
#5326 Polymorphic instances aren't automatically specialised Compiler 7.0.3 low simonpj new Jul 15, 2011
#9730 Polymorphism and type classes Compiler (Type checker) 7.8.3 normal new Oct 27, 2014
#4288 Poor -fspec-constr-count=n warning messages Compiler 6.13 low new Sep 4, 2010
#11672 Poor error message Compiler (Type checker) 8.0.1-rc2 normal adamgundry new Mar 4, 2016
#11564 Possible overzealous unfolding Compiler 8.1 high new Feb 9, 2016
#12069 Possible type inference regression: "Expected a type, but 'a' has kind 'k0'" Compiler (Type checker) 8.1 normal new May 16, 2016
#11339 Possible type-checker regression in GHC 8.0 Compiler (Type checker) 8.0.1-rc1 highest 8.0.2 simonpj new Jan 2, 2016
#9981 Potential typechecker regression in GHC 7.10.1RC Compiler (Type checker) 7.10.1-rc1 low 8.2.1 simonpj new Jan 13, 2015
#12134 PowerPC 64-bit: Foreign functions with more than 8 float parameters broken Compiler (NCG) 8.0.1 normal trommler new May 29, 2016
#12002 Pragmas after a module declaration are ignored without warning. Compiler (Parser) 7.10.3 normal new May 1, 2016
#1727 Precedence and associativity rules ignored when mixing infix type and data constructors in a single expression Compiler (Parser) 6.6.1 lowest minor new Sep 22, 2007
#9121 Presence of dyn_o files not checked upon recompilation Driver 7.8.3 normal new May 17, 2014
#4101 Primitive constant unfolding Compiler 6.12.2 low schyler new May 28, 2010
#8472 Primitive string literals prevent optimization Compiler 7.6.3 normal xnyhps new Oct 23, 2013
#7287 Primops in RULES generate warnings Compiler 7.7 normal 7.6.2 new Oct 1, 2012
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