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Ticket Summary Status Owner Priority Milestone Component
#7353 Make system IO interruptible on Windows new normal 7.8.3 libraries/base
#8046 Make the timer management scale better across multicore new normal Compiler
#7897 MakeTypeRep fingerprints be proper, robust fingerprints new normal Compiler
#8784 Makefile missing a dependency new normal Build System
#8843 Maverick GHC --make problem - linking problem new normal Compiler
#7289 Mingw FPU init not Windows compatible. new high 7.8.3 Runtime System
#1216 Missed opportunity for let-no-esape new simonpj normal 7.6.2 Compiler
#2439 Missed optimisation with dictionaries and loops new simonpj lowest 7.6.2 Compiler
#8034 Missing ambiguity test for class methods new normal 7.8.3 Compiler
#8798 Missing symbols with -fprof-auto-calls new normal Compiler
#8941 Module that causes GHC-7.8 to exhaust memory when compiled with -O2 new normal Compiler
#8699 Multiple test faliures on 32-bit Linux systems. new normal Compiler
#2374 MutableByteArray# is slower than Addr# new lowest 7.6.2 Compiler (NCG)
#7475 Mysterious Data.Word Segmentation Fault in GHCi new normal 7.8.3 Compiler
#8971 Native Code Generator 7.8.1 RC2 is not as optimized as 7.6.3... new normal Compiler (NCG)
#8178 Need TypeRep for Symbol and numeric type literals; and Typeable instances new diatchki normal Compiler
#2289 Needless reboxing of values when returning from a tight loop new lowest 7.6.2 Compiler
#7930 Nested STM Invariants are lost new fryguybob normal Runtime System
#8918 Network package doesn't load under GHC 7.8 RC on windows (?) new normal libraries (other)
#7198 New codegen more than doubles compile time of T3294 new simonmar high 7.8.3 Compiler
#8871 No-op assignment I64[BaseReg + 784] = I64[BaseReg + 784]; is generated into optimized Cmm new normal Compiler
#8970 Non-exhaustive pattern match warning with DataKinds and TypeFamilies new normal Compiler
#2260 Non-ideal error message for misplaced LANGUAGE pragma new lowest 7.6.2 Compiler (Parser)
#7727 Nonsense evaluation: sequence [] = [] new normal 7.8.3 GHCi
#8490 OS X 10.9 gcc-4.8 unknown symbol `__objc_empty_table` new normal Compiler
#3470 OSX installer should give an informative error message when XCode is missing new lowest 7.6.2 Build System
#7765 Odd error message for `runghc` with missing `main` function. new normal 7.8.3 Compiler
#8399 Of Bird tacks and non-blank blank lines new low Compiler
#6016 On Windows, runhaskell hits an error on UTF-8 files with a BOM new normal 7.6.2 Compiler (Parser)
#8198 One-shot mode is buggy w.r.t. hs-boot files new parcs normal 7.8.3 Driver
#7596 Opportunity to improve CSE new simonpj normal 7.8.3 Compiler
#1168 Optimisation sometimes decreases sharing in IO code new normal Compiler
#2132 Optimise nested comparisons new normal Compiler
#7367 Optimiser / Linker Problem on amd64 new normal 7.8.3 Build System
#2387 Optimizer misses unboxing opportunity new lowest 7.6.2 Compiler
#8629 Option 'split-objs' being ignored when trying to reduce object code size in iOS cross-compilation new normal Compiler
#8363 Order matters for unused import warnings when reexporting identifiers new normal Compiler
#8082 Ordering of assembly blocks affects performance new normal Compiler (NCG)
#3107 Over-eager GC when blocked on a signal in the non-threaded runtime new lowest 7.6.2 Runtime System
#8710 Overlapping patterns warning misplaced new low Compiler
#5844 Panic on generating Core code new normal 7.6.2 External Core
#7078 Panic using mixing list with parallel arrays incorrectly new chak normal 7.8.3 Compiler
#7380 Panic: mkNoTick: Breakpoint loading modules with -O2 via API new normal 7.8.3 GHC API
#7736 Parallel array enumeration causes compiler panic (enumFromToP) new chak normal 7.8.3 Compiler
#6034 Parse error when using ' with promoted kinds new low Compiler (Parser)
#8956 Parser error shadowed by "module ‘main:Main’ is defined in multiple files" error new normal Compiler
#8968 Pattern synonyms and GADTs new normal Compiler (Type checker)
#5954 Performance regression 7.0 -> 7.2 (still in 7.4) new simonpj high 7.6.2 Compiler
#6166 Performance regression in mwc-random since 7.0.x new high 7.6.2 Compiler
#8990 Performance tests behave differently depending on presence of .hi file (even with -fforce-recomp) new normal Test Suite
#3231 Permission denied error with runProcess/openFile new simonmar normal 7.6.2 libraries/base
#8482 Permission denied when copying file to current directory with copyFile new normal libraries/directory
#3472 Porting through .hc files broken new high 7.8.3 Build System
#1727 Precedence and associativity rules ignored when mixing infix type and data constructors in a single expression new lowest 7.6.2 Compiler (Parser)
#8528 Preprocessor issues building GHC HEAD on Mavericks new high Compiler
#8403 Pretty-printing of long types new lowest Compiler
#4101 Primitive constant unfolding new schyler low 7.6.2 Compiler
#8472 Primitive string literals prevent optimization new normal Compiler
#1158 Problem with GADTs and explicit type signatures new simonpj lowest Compiler
#8811 Profiling output jumbled together new normal Compiler
#8948 Profiling report resolution too low new normal Profiling
#6113 Profiling with -p not written if killed with SIGTERM new normal 7.6.2 Profiling
#1147 Quadratic behaviour in the compacting GC new normal Runtime System
#8665 RELEASE_LOCK: I do not own this lock new normal Compiler
#8676 RTS headers don't compile as C++ new simonmar normal 7.8.3 Runtime System
#7398 RULES don't apply to a newtype constructor new normal 7.8.3 Compiler
#427 Random.StdGen slowness new rrnewton normal libraries/random
#8346 Rank 1 type signature still requires RankNTypes new normal Compiler
#8671 Rebindable syntax creates bogus warning new normal Compiler
#7828 RebindableSyntax and Arrow new normal 7.8.3 Compiler (Type checker)
#7277 Recompilation check fails for TH unless functions are inlined new high 7.6.2 Template Haskell
#7788 Recursive type family causes <<loop>> new simonpj normal 7.8.3 Compiler (Type checker)
#7063 Register allocators can't handle non-uniform register sets new benl normal 7.8.3 Compiler (NCG)
#8048 Register spilling produces ineffecient/highly contending code new normal Compiler (CodeGen)
#2489 Registry keys are created in per-user HKCU instead of system-wide HKLM new normal None
#7679 Regression in -fregs-graph performance new high 7.8.3 Compiler (NCG)
#7450 Regression in optimisation time of functions with many patterns (6.12 to 7.4)? new normal 7.8.3 Compiler
#8953 Reifying poly-kinded type families misses kind annotations new goldfire normal Template Haskell
#2725 Remove Hack in compiler/nativeGen/MachCodeGen.hs new thoughtpolice high 7.8.3 Compiler (NCG)
#8244 Removing the Cabal dependency new normal Compiler
#3065 Reorder tests in quot to improve code new lowest 7.6.2 libraries/base
#3138 Returning a known constructor: GHC generates terrible code for cmonad new lowest 7.6.2 Compiler
#7611 Rewrite rules application prevented by type variable application (map id vs. map (\x -> x)) new normal 7.8.3 Compiler
#8177 Roles for type families new goldfire normal Compiler
#7511 Room for GHC runtime improvement >~5%, inlining related new normal 7.8.3 Compiler
#6079 SEH exception handler not implemented on Win64 new normal 7.6.2 Runtime System
#5821 SPECIALISE fails with a cryptic warning new normal 7.6.2 Compiler
#8668 SPECIALIZE silently fails to apply new normal Compiler
#2028 STM slightly conservative on write-only transactions new lowest 7.6.2 Compiler
#3266 Segment fault with WxHaskell and GHC 6.10.2 new normal Compiler
#8728 Segmentation fault in Cabal new normal 7.8.3 libraries (other)
#7625 Semicolon is not handled between imports at the ghci command prompt new normal 7.8.3 GHCi
#8529 Sequent reading from socket/connection on Windows fails new normal libraries/haskell2010
#7307 Share top-level code for strings new parcs normal 7.8.3 Compiler
#6101 Show instance for integer-simple is not lazy enough new normal 7.8.3 libraries (other)
#7057 Simplifier infinite loop regression new simonpj normal 7.8.3 Compiler
#8319 Simplifier ticks exhausted (need -fsimpl-tick-factor=955) new normal Compiler
#7521 Simplifier ticks exhausted when compiling Accelerate example. new high 7.8.3 Compiler
#8336 Sinking pass could optimize some assignments better new normal Compiler
#8369 Small improvements to ./sync-all new hvr lowest Trac & Git
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