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Ticket Summary Keywords Status Owner Type Priority
#149 missed CSE opportunity optimisations new bug normal
#229 Integer overflow in array allocation new rwbarton bug normal
#314 #line pragmas not respected inside nested comments new bug high
#322 fromInteger-related pattern match overlap warnings warnings new simonpj bug normal
#344 arrow notation: incorrect scope of existential dictionaries new ross bug lowest
#345 GADT - fundep interaction new simonpj bug low
#367 Infinite loops can hang Concurrent Haskell scheduler allocation new ezyang bug lowest
#418 throwTo to a thread inside 'block' new bug lowest
#427 Random.StdGen slowness new ekmett bug normal
#487 powerpc/linux segfaulting binaries new bug normal
#552 GHCi :m doesn't restore default decl new bug lowest
#589 Various poor type error messages new bug low
#781 GHCi on x86_64, cannot link to static data in shared libs getEnvironment new bug high
#806 hGetBufNonBlocking doesn't work on Windows new bug normal
#816 Weird fundep behavior (with -fallow-undecidable-instances) new bug normal
#917 -O introduces space leak new bug lowest
#926 infinite loop in ShutdownIOManager() new bug lowest
#947 ghc -O space leak: CSE between different CAFs new bug normal
#1012 ghc panic with mutually recursive modules and template haskell new bug lowest
#1057 Implicit parameters on breakpoints new bug normal
#1062 Bad output from Text.PrettyPrint.HughesPJ new ekmett bug normal
#1087 bang patterns with infix ops bang patterns new bug normal
#1147 Quadratic behaviour in the compacting GC ghci compacting new bug normal
#1158 Problem with GADTs and explicit type signatures new simonpj bug lowest
#1168 Optimisation sometimes decreases sharing in IO code new bug normal
#1171 GHC doesn't respect the imprecise exceptions semantics new bug low
#1176 Infinite loop when printing error message new thorkilnaur bug low
#1216 Missed opportunity for let-no-esape new simonpj bug normal
#1290 ghc runs preprocessor too much new bug normal
#1307 Warning refers to code not in the source new bug lowest
#1308 Type signature in warning is wrong new bug normal
#1330 Impredicativity bug: Church2 test gives a rather confusing error with the HEAD new simonpj bug lowest
#1400 :set +r doesn't work for interpreted modules new simonmar bug normal
#1466 Stack check for AP_STACK new simonmar bug normal
#1487 unix package: test needed for getLoginName new ekmett bug lowest
#1498 Optimisation: eliminate unnecessary heap check in recursive function new bug low
#1526 -fobject-code doesn't apply to expressions typed at the prompt new bug normal
#1530 debugging :steps inside TH spliced code need to be bypassed new bug normal
#1544 Derived Read instances for recursive datatypes with infix constructors are too inefficient new bug normal
#1612 GHC_PACKAGE_PATH and $topdir bug new bug lowest
#1614 Type checker does not use functional dependency to avoid ambiguity new bug normal
#1620 ModBreaks.modBreaks_array not initialised new bug normal
#1687 A faster (^)-function. new bug normal
#1693 Make distclean (still) doesn't new bug lowest
#1727 Precedence and associativity rules ignored when mixing infix type and data constructors in a single expression new bug lowest
#1820 Windows segfault-catching only works for the main thread new bug lowest
#1831 reify never provides the declaration of variables new bug normal
#1851 "make install-strip" should work new bug normal
#1853 hpc mix files for Main modules overwrite each other new AndyGill bug lowest
#1883 GHC can't find library using "short" name link library windows new bug lowest
#1928 Confusing type error message new bug low
#1978 Error message: Undefined reference to `XXX_closure' new bug normal
#2028 STM slightly conservative on write-only transactions new bug lowest
#2031 relocation overflow new bug normal
#2057 inconsistent .hi file error gets ignored new bug normal
#2064 problems with duplicate modules new bug lowest
#2132 Optimise nested comparisons new bug normal
#2140 cpuTimePrecision is wrong for me on Windows (XP) new ekmett bug lowest
#2147 unhelpful error message for a misplaced DEPRECATED pragma new bug lowest
#2159 Use a more efficient representation than [DynFlag] new bug lowest
#2189 hSetBuffering stdin NoBuffering doesn't work on Windows hsetbuffering buffering buffer new bug normal
#2224 -fhpc inteferes/prevents rewrite rules from firing rules, hpc new andy@… bug lowest
#2255 Improve SpecConstr for free variables new bug normal
#2256 Incompleteness of type inference: must quantify over implication constraints new simonpj bug lowest
#2260 Non-ideal error message for misplaced LANGUAGE pragma new bug lowest
#2273 inlining defeats seq new bug lowest
#2280 randomR too slow randomR new ekmett bug normal
#2289 Needless reboxing of values when returning from a tight loop boxing, loops, performance new bug lowest
#2346 Compilation of large source files requires a lot of RAM new bug lowest
#2356 GHC accepts multiple instances for the same type in different modules new bug low
#2370 num009 fails on OS X 10.5? new bug lowest
#2374 MutableByteArray# is slower than Addr# performance array new bug lowest
#2387 Optimizer misses unboxing opportunity optimizer unbox box new bug lowest
#2401 aborting an STM transaction should throw an exception new bug low
#2408 threadWaitRead on mingw32 threaded causes internal error new bug normal
#2439 Missed optimisation with dictionaries and loops new simonpj bug lowest
#2459 can't link haskell without "main" function, or -no-hs-main broken on windows? new bug lowest
#2496 Invalid Eq/Ord instances in Data.Version new bug normal
#2607 Inlining defeats selector thunk optimisation new bug normal
#2625 Unexpected -ddump-simpl output for derived Ord instance and UNPACKed fields new bug low
#2642 Improve SpecConstr for join points new bug lowest
#2710 -main-is flag in {-# OPTIONS #-} pragma not fully supported -main-is ghc new bug lowest
#2725 Remove Hack in compiler/nativeGen/MachCodeGen.hs codegen new thoughtpolice bug normal
#2731 Avoid unnecessary evaluation when unpacking constructors new bug lowest
#2776 Document -pgmL (Use cmd as the literate pre-processor) pgmL literate new bug lowest
#2786 Blackhole loops are not detected and reported in GHCi new bug normal
#2805 Test ffi009(ghci) fails on PPC Mac OS X new bug lowest
#2926 Foreign exported function returns wrong type new bug low
#2933 LDFLAGS ignored by build system new bug lowest
#2940 Do CSE after CorePrep new simonpj bug lowest
#2988 Improve float-in new bug lowest
#2991 .tix file generation broken with -fhpc and --make flags with lhs modules hpc make lhs new andy@… bug lowest
#3034 divInt# floated into a position which leads to low arity infoneeded bug lowest
#3048 Heap size suggestion gets ignored when -G1 flag is passed new bug normal
#3055 Int / Word / IntN / WordN are unequally optimized new bug normal
#3061 GHC's GC default heap growth strategy is not as good as other runtimes performance, GC new bug lowest
#3070 floor(0/0) should not be defined new squadette bug lowest
#3073 Avoid reconstructing dictionaries in recursive instance methods new bug lowest
#3081 Double output after Ctrl+C on Windows new bug normal
#3094 Some GHC.* module should export word size and heap object header size new bug normal
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