id summary owner type status priority milestone 106 com. line args not honoured for recompil bug closed low 6.8.1 303 Rebindable syntax doesn't work as advertised nobody bug closed normal 445 panic! mkWWcpr: not a product simonpj bug closed low 6.8.1 462 Incomplete pattern warnings with GADTs nobody bug closed low 592 signal handlers should be able to access siginfo_t information simonmar feature request closed normal 6.12.1 604 Windows installer: use WiX task closed low 6.6.1 707 foldr/build seems to be broken bug closed normal 714 Inconsistency between handling functional dependencies in class and signature constraints simonpj bug closed low 6.12 branch 717 Compiling large constant data structure fails bug closed normal 726 error messages can include too much source code feature request closed normal 727 Write a generic Trie. feature request closed normal 733 Problem compiling .lhs files with lines that begin with # bug closed low _|_ 747 Unloading a dll does not clean up properly bug closed normal 6.6 754 EVACUATED object entered bug closed normal 755 GHC 6.4.2 crashes frequently on OSX Tiger 10.4.6 bug closed high 6.4.2 757 Compiler error when trying to run ZFS bug closed normal 758 Error compiling darcs on Mac OS X bug closed normal 764 DESTDIR Makefile variable igloo feature request closed low 6.6.1 770 Huge array leads to various crashes bug closed normal 780 internal error: mallocBytesRWX: bug closed normal 819 Uncaught kind error leads to the 'impossible' happening bug closed normal 826 Optimization breaks strictness with IO bug closed normal 871 compiler bug concerning arrays bug closed normal 931 "-caf-all gives ""Error: symbol `Mainmain_CAF_cc_ccs' is already defined""" bug closed normal 6.6.1 934 Allow load to work correctly when executed multiple times the same session for BatchCompile feature request closed normal 6.8.1 938 ghci crashes on startup with Windows 2003 bug closed normal 964 Cross Compile and Universal Binary feature request closed normal _|_ 1020 Build dynamic libraries by default for OSX feature request closed normal 6.8.2 1021 GHC static libraries are not position independent in OSX bug closed normal 6.8.2 1043 """Weird Number"" crashes GHCi (and Hugs) when integer-divided by -1" bug closed normal 1075 ghci unhandled exception on startup (memory access violation) bug closed normal 6.6.1 1076 runhaskell crash with .hi/.o files in the directory bug closed normal 6.6.1 1088 : internal error: interpretBCO: unknown or unimplemented opcode bug closed normal 1094 loop optimization by removing constants feature request closed normal 6.8.1 1097 enumFrom on basic numeric types should be strict bug closed normal Not GHC 1113 GHCi 6.6 and unicode at the REPL bug closed normal 1124 Panic! The impossible happened: initC srt bug closed normal 1156 usleep hangs indefinitely when using -threaded bug closed normal 6.8.1 1166 GHCi crashes under Windows 2003 server bug closed highest 6.6.1 1172 Impredicative type-class context causes stack overflow or non-termination in type checker bug closed normal 1173 Impredicative type-class context causes stack overflow or non-termination in type checker bug closed normal 1174 Impredicative type-class context causes stack overflow or non-termination in type checker bug closed normal 1175 internal error: interpretBCO: unknown or unimplemented opcode 64936 bug closed normal 1178 ghci 6.6 dies on nobench 'chess' program with unknown opcode error bug closed normal 1179 20x slow down with -O or -O2 bug closed normal 1183 internal error: interpretBCO: unknown or unimplemented opcode 64956/64949 bug closed normal 1206 """Bad interface file: System/IO.hi"" in ghci when ./System/IO.hs exists" bug closed normal 6.8.1 1208 ghci-6.6 aborts at initialization bug closed normal 6.8 branch 1210 Unimplemented opcode error while running ZFS bug closed normal 1211 source code links broken in mtl docs bug closed normal 1226 Add flags --full-flag-help and --print-docdir igloo feature request closed normal 6.8.2 1233 Biographical Profiling of Heap crashes bug closed normal 1244 hashString in Data.HashTable bad hash function bug closed normal 1250 Data.Map.map should be deprecated/removed proposal closed normal 1267 Strictness of Integer's enumFrom bug closed low 1276 a sum-file program not working under Windows bug closed normal 1320 FAQ item for running GHCi on WinXP x64 using DEP task closed low 1327 internal error: interpretBCO: unknown or unimplemented opcode 35464 bug closed normal 1341 allow loading partially correct modules feature request closed normal _|_ 1354 Interactive I/O with ghc doesn't prompt until after reading bug closed normal 1373 Allow Access to generated STG from the GHC API feature request closed normal 6.8.2 1374 "Error: file is not executable: ""...\\ar.exe""" bug closed normal 1387 Ad-hoc recognition for attempts to use Haskell top-level syntax in the GHCi repl feature request closed normal 1390 interpretBCO: unknown or unimplemented opcode 61764 bug closed normal 1412 Typo in type error for lazy patterns bug closed low 1428 Mutually recursive modules feature request closed high 1439 ghci silently changes for the worse when already-compiled object code is found bug closed normal 1441 Evaluating undefined should return line number and module of location of undefined feature request closed normal _|_ 1484 gcc installation problem? bug closed normal 1552 GHCi thinks large list literals impossible? bug closed normal 1573 GADT and typeclass funcional dependencies not working well together bug closed normal 1618 It it not possible to manage the output codification. feature request closed normal 1636 Profiling reports contain $f1, $f2 etc bug closed normal 6.8.1 1637 internal error retainstack profiler bug closed normal 1671 Cannot ^C out of certain computations in GHCi bug closed normal 1682 ghci Foo.hs should load the Foo.hs file interpreted feature request closed normal 6.8.1 1695 library submission: Data.Either.unzipEithers :: [Either a b] -> ([a],[b]) proposal closed normal Not GHC 1707 simplifier causes stack overflow in ghc-6.8.0.20070916 bug closed normal 1708 simplifier causes stack overflow in ghc-6.8.0.20070916 bug closed normal 1714 GHC crashes when encountering arrow syntax bug closed high 6.8.1 1724 Type family and GADT error bug closed high 1730 "type families GHC ""impossible happened""" chak bug closed normal 1731 Proposal: Rename haskell@ to haskell-announce@ task closed normal Not GHC 1757 Simple example crashes GHC bug closed normal 1761 "Compiler panics on ""phantom family""" bug closed normal 1793 Compiling QuickCheck fails bug closed normal 1798 add better framework support to ghc feature request closed normal 6.10 branch 1807 type equality coercions not symmetric + order dependent chak bug closed normal 6.10 branch 1819 x86 native codegen implements float2int# incorrectly bug closed normal 6.8.3 1842 runInteractiveCommand should install SIGCHLD handler -- bug closed normal 6.10 branch 1865 GHCi debugger crashes with :print bug closed normal 6.8.2 1882 GHC's vfork() silently dies, which renders compiling impossible (cyclic dependency) bug closed normal 1890 Regression in mandelbrot benchmark due to inlining -- bug closed high 6.8.3 1895 Allow aliases in GHCi module imports feature request closed high 6.12.1 1905 runProcess: misbehaving exception on nonexistent working directory simonmar bug closed normal 6.8.2 1931 readline/rlstdc.h not found (and other errors) when building readline on Mac OS X with framework GNUreadline judah bug closed normal 6.8.2 1937 Configure script fails on target ia64 machine when trying to cross-compile ghc-6.8.1 bug closed normal 1942 Warnings even with -w specified bug closed normal 1945 Full laziness is sometimes a pessimisation bug closed normal 1948 panic compiling associated type synonyms chak bug closed normal 6.10 branch 1957 Program that runs slower with optimizations on bug closed normal 1967 Allow runhaskell to execute not .hs/.lhs files feature request closed normal 1982 "Spurious ""defined but not used"" warnings for constructors of types deriving Read" bug closed low 1983 Panic on interpreting very large expr bug closed normal 1986 runhaskell doesn't have a --version option feature request closed normal 6.10 branch 1992 6.8.2 intermittent build failure on multiple OS X versions bug closed normal 6.8.3 1993 """RegAllocLinear.getStackSlotFor: out of stack slots"" when compiling SHA1.hs in darcs" -- bug closed normal 6.10 branch 1998 Stricter enumFrom instance for Integer, to match Int bug closed normal 6.8.3 2010 out of stack slots bug closed normal 2013 ghci crash on startup: R_X86_64_32S relocation out of range. simonmar bug closed high 6.10.1 2016 GHC generates bad code for pointer manipulations from .cmm bug closed normal 2037 Inner type declaration causes GHC panic bug closed normal -- 2046 Parse errors for mismatched brackets are awful feature request closed normal -- 2056 Incorrect warning about unused import bug closed normal -- 2058 Ghci tab-completion cannot handle Unicode bug closed normal 6.12.1 2060 Unknown opcode 10904 bug closed normal -- 2061 ghc-pkg loops on mutually recursive package dependencies bug closed normal -- 2077 GHC ignores pragma due to preceding comment bug closed normal -- 2094 add two new forms of unsafePerformIO and one of unsafeInterleaveIO proposal closed normal -- 2096 FFI file operations broken on 32-bit systems (inc many functions in unix package) bug closed normal -- 2113 +++ ghci panic bug closed normal -- 2115 option for ghc rts to be linked as a shared object / dll feature request closed normal -- 2116 ghci should try to read erroneous modules partially feature request closed normal 6.10 branch 2117 "ppc ""./Setup build"" seg-faults on Mac OS leopard" bug closed normal 6.8.3 2124 My program compiles with -O1 but compiler panics with -O2 and up bug closed normal -- 2145 ghc does not terminate (renamer/typechecker?) bug closed normal -- 2155 More deadlock issues with concurrent I/O simonmar bug closed normal 6.8.3 2160 """internal error: PAP object entered!"" when running ghci compiled with profiling" bug closed normal 6.10 branch 2162 panic! (the 'impossible' happened) while compiling XMonadContrib bug closed normal -- 2167 The -main-is option to runghc does not appear to work. bug closed normal -- 2172 ghci / ghc -e outputs terminal escapes even when redirected to file/pipe bug closed normal -- 2183 GHCi bug closed normal -- 2195 yi: internal error: R_X86_64_PC32 relocation out of range: (noname) = 0x7c436730a bug closed normal -- 2220 Subprocesses do not close open FDs bug closed normal -- 2221 Can't use quotations ([| ... |]) insides declaration splices bug closed normal 2229 ghc crashes on trying to build encoding module bug closed normal -- 2231 ASSERT failed! file typecheck/TcMType.lhs line 442 t_a7Fa{tv} [tau] simonpj bug closed normal 6.10 branch 2242 review and apply small patch removing no longer existing modules from ghc package db task closed normal -- 2270 gcd is specialised only for Int dons@galois.com bug closed normal 6.12.1 2274 ghc assumes sizeof (void *) != 32 on X86_64 bug closed normal -- 2284 Stack-hack optimization causes much re-computation in GUI callbacks bug closed normal _|_ 2288 "ghc-6.8.2: panic! (the 'impossible' happened) (GHC version 6.8.2 for i386-apple-darwin): linkBCO: >= 64k insns in BCO" bug closed normal -- 2290 Impossible happens compiling darcs bug closed normal -- 2317 Garbage collector crashes in simple parallel sorting program bug closed high 6.8.3 2366 ASSERT failed! file typecheck/TcMType.lhs line 517 bug closed normal 6.10.1 2404 GHCi :r does not reset imported class instances bug closed normal -- 2415 unfoldr segfaults bug closed normal -- 2417 using GADT syntax for an associated datatype causes GHC to panic chak bug closed normal 6.10.1 2418 desugaring type function application to constraint makes bug disappear bug closed normal 6.10.1 2454 Closing handle from runInteractiveProcess causes myserious, uncatchable death. bug closed normal -- 2471 generate C wrappers for FFI functions task closed normal 6.10 branch 2479 Crash on printing a ClockTime with a negative value for number of seconds since the epoch bug closed normal -- 2487 ghci baulks when trying the Glade tutorial bug closed normal -- 2498 RULES pragma broken in the head igloo bug closed normal 6.10.1 2504 linkBCO: >= 64k insns in BCO bug closed normal -- 2505 windows installer should not hijack filetype associations! -- bug closed normal -- 2512 MAP_32BIT flag might not be respected under xen? bug closed normal 6.10.2 2516 Panic in typechecker when checking rules bug closed normal -- 2524 GHCi linking error with Gtk2Hs. bug closed normal -- 2543 "Nested SPECIALIZEd functions cause error: ""Symbol _BadUTF8_zdf1_closure already defined.""" bug closed normal -- 2546 Reliable crash in checkBlackHoles bug closed normal -- 2553 panic: RegAllocLinear.getStackSlotFor: out of stack slots bug closed normal -- 2563 "With -N4: ""internal error: RELEASE_LOCK: I do not own this lock: Task.c 269""" bug closed normal 6.10.1 2568 hSetBuffering NoBuffering and getChar don't work properly on Windows bug closed normal 6.10 branch 2569 Inferred type not accepted by compiler bug closed normal -- 2577 dependency on $HOME environment variable bug closed normal -- 2579 export Data.Map.toDescList proposal closed normal -- 2590 problem with very large lists bug closed normal -- 2593 Wrong size for Int in arguments to functions wrapped to FunPtr by FFI wrappers (on 64-bit machine) bug closed normal -- 2612 deriving Data.Typeable on phantom newtypes does not report that DeriveDataTypeable is needed bug closed normal -- 2621 sum and product thunkpile bug closed normal -- 2631 Template Haskell weird error message bug closed normal -- 2633 Broken windres in Windows installer bug closed normal 6.10.1 2666 RegAllocLinear error when compling the Crypto-4.1.0 library bug closed normal -- 2667 GHC Linux binary distribution compiler panic bug bug closed normal -- 2676 (->2606) GHCi 6.10 prints `^[[A' for [UP], `^?' for [BACKSPACE] instead of intended action bug closed normal -- 2681 Incorrect imported module not used warning bug closed normal -- 2686 Panic in OpenAFP with GHC 6.10 RC bug closed high 6.10.1 2719 urk! lookup local fingerprint with -O and TemplateHaskell bug closed normal -- 2730 Quasiquote or TH linking may need HPC flag bug closed normal 6.10.2 2733 Newtype deriving over phantom types broke between GHC 6.6.1 and GHC 6.8.1 bug closed normal -- 2741 Delete key not working in GHCi bug closed normal -- 2749 No mention of -shared regression in relase docs bug closed normal -- 2753 GHC 6.10.1 cannot compile Crypto-4.1.0 bug closed normal 6.10.2 2763 while installing cabal from darcs, 1.6.0.1 and 1.4.0.2 bug closed normal 6.10 branch 2771 GHC fail to Compile Crypto bug closed normal -- 2772 vista detects ghc crash on testsuite ghci derefnull bug closed normal -- 2777 "process created by system ""yes"" exits with error code 1" bug closed normal -- 2779 ghc: internal error: mmap() returned memory outside 2Gb bug closed normal -- 2780 C stack overflow on Windows simonmar bug closed normal -- 2787 Panic (core lint failure) with type synonym in GHC 6.10.1 chak bug closed normal -- 2788 GHC panic bug closed normal -- 2792 getEnvironment segfaults under ghci 6.6 x86_64 bug closed normal -- 2801 Hang in getLine on Windows when Ctrl-C -- bug closed normal -- 2804 "Failing GHCi: ""ghc-6.8.2: internal error""" bug closed normal -- 2809 Patching libffi fails in Solaris bug closed normal 6.12 branch 2810 Debugger: change context to the module containing the current breakpoint feature request closed normal 6.12 branch 2820 GADT code from RepLib causes panic! bug closed normal -- 2825 Stack overflow death bug closed normal 6.10.2 2834 DLL compilation does not work as it did in 6.8.3 bug closed normal -- 2849 RegAllocLinear.getStackSlotFor: out of stack slots bug closed normal -- 2853 Defaulting not used enough with type families chak bug closed normal -- 2854 Extended defaulting rules not used for super classes bug closed normal -- 2855 Surprising type (family) type derived feature request closed normal -- 2866 panic with GADTs + NoMonomorphismRestriction igloo bug closed normal -- 2885 Late and confusing error on uncallable class method bug closed normal -- 2886 Haddock documentation missing for haskell98 bug closed normal -- 2904 "Broken pipe when quitting ""ghc --show-iface file.hi | less""" bug closed normal -- 2906 .hc code generated for Parser.hs is 2MB big bug closed normal 6.12 branch 2909 long list of names -> linkBCO: >= 64k insns in BCO bug closed normal -- 2912 GHCi bug: bus error when executing some gsl-random code bug closed high 6.10.2 2919 ghc panic while compiling Crypto bug closed normal -- 2928 internal error: schedule: invalid what_next field bug closed normal -- 2938 excessive use of stack space with longer source lists bug closed normal -- 2964 System.Directory.getCurrentDirectory doesn't work on win32 if the current directory has non-ascii characters in its name bug closed normal -- 2967 GHC panics while building the Crypto library bug closed normal -- 3006 ghc panic when build Crypto package on Mac OS X 10.4 bug closed normal -- 3010 """RegAllocLinear.getStackSlotFor: out of stack slots"" ghc 6.10.1 for i386-unknown-mingw32 compiling Crypto-4.1.0" bug closed normal -- 3022 ghc: panic! (the 'impossible' happened) linkBCO: >= 64k insns in BCO bug closed normal -- 3026 GHCi segfault bug closed normal 6.12.1 3028 what_next error bug closed normal -- 3029 ghc panic while installing hs-Crypto package (via macport) bug closed normal -- 3038 Associated type use triggers a bogus error message bug closed normal -- 3045 GHCI Crashes Under Windows when loading compiled code bug closed low 6.12.1 3046 Generalized newtype deriving with associated types bug closed normal -- 3047 Panic! (the 'impossible' happened) :) bug closed normal -- 3051 Add product/sum/maximum/minimum specialisations for more atomic types bug closed normal 6.12.1 3074 Template Haskell does not support type families. bug closed normal -- 3078 Erroneous warnings for -XPatternGuards bug closed normal -- 3080 Show more instances with :info feature request closed lowest 7.6.2 3098 loadObj: failed bug closed low 6.12.1 3109 GHCi won't start in a x84_64 machine bug closed normal -- 3112 GHCI Crashes on self referential local variable bug closed normal -- 3129 Crypto-4.1.0 compilation failure bug closed normal -- 3133 Biographical profiling segfaults bug closed normal -- 3146 Testsuite for 6.10.2 fails if ghc is not already installed. bug closed normal -- 3150 Overlapping data instances can segfault bug closed normal -- 3154 Type families bug with data family instances bug closed normal -- 3158 Linker error (libffi.so.5) in 6.10.2 x86-Linux binary distribution bug closed normal -- 3164 ghc: panic! (the 'impossible' happened) while building pandoc on a macbook bug closed normal -- 3174 decodeFloat (0.0/0.0) = undefined feature request closed normal _|_ 3180 TcTyFuns.flattenType: unexpected PredType bug closed normal -- 3194 Spurious reading of keyboard in GHCi bug closed normal -- 3209 Use Levenshtein distance for unknown identifier errors feature request closed normal -- 3212 getOptions'.parseLanguage(2) went past eof token bug closed normal -- 3213 Failure in parsing a malformed LANGUAGE pragma bug closed normal -- 3227 Can't specify type signature of value typed with type families bug closed normal -- 3239 Bad jump on PowerPC bug closed normal -- 3240 Bad jump on PowerPC bug closed normal 6.12 branch 3244 Associated type panic bug closed normal -- 3247 GHCI segfaults when per-thread stack size is larger than max stack size simonmar bug closed normal 6.12.1 3248 internal error: splitLargeBlog bug closed normal -- 3249 Unable to install Ghc packages by MacPorts bug closed normal -- 3264 Real World Haskell book example issue bug closed normal -- 3269 Stop using PackedString in template-haskell; drop packedstring as a bootlib proposal closed normal Not GHC 3273 memory leak due to optimisation bug closed normal 6.12 branch 3281 The order of arguments to the function passed to nubBy got swapped somehow bug closed normal -- 3284 ghc: panic! (the 'impossible' happened). RegAllocLinear.getStackSlotFor: out of stack slots, try -fregs-graph bug closed normal -- 3285 """PAP object entered"" on executable with profiling" bug closed normal 6.12.1 3287 Malformed LANGUAGE pragma causes GHC panic bug closed normal -- 3288 GC assertion failure in reactive program simonmar bug closed high 6.10.4 3313 Uncertain bug report (panic!) bug closed normal 6.12.1 3326 the recompilation checker should take CPP flags into account bug closed normal 7.2.1 3357 ghc panic bug closed normal -- 3358 ghc panic bug closed normal -- 3360 Add profiling support to GHCi feature request closed normal _|_ 3365 Bug in GHCi, 'impossible' happened bug closed normal -- 3366 Bug in GHCi, 'impossible' happened bug closed normal -- 3386 RegAllocLinear.getStackSlotFor: out of stack slots, try -fregs-graph bug closed normal -- 3401 unintuitive error message about unbalanced parentheses bug closed normal -- 3414 GHC does not configure with autoconf 2.64 bug closed normal -- 3422 No match in record selector Var.tcTyVarDetails chak bug closed normal -- 3431 Loading this module causes panic in interpreter. bug closed normal -- 3432 ghc panic because of incorrect module bug closed normal -- 3433 Omitted # after LANGUAGE pragma causes panic bug closed normal -- 3442 GHC panics if closing #-} for a LANGUAGE pragma is not on the same line bug closed normal -- 3443 GHCi produces a panic on printing and escaped GBP sign, and won't print gbp sign either bug closed normal -- 3459 ghci 6.10.4 and 6.10.1 crash with a big list bug closed normal -- 3471 configure fails for GHC 6.10.4 on Mac OS X 10.6 in 64-bit mode with previously-built GHC bug closed normal -- 3491 Relax superclass restrictions bug closed normal _|_ 3492 Add TyThing -> HsSyn translation code from Haddock task closed normal 7.0.1 3496 GHC panic while building the base library with Cabal simonmar bug closed low 7.0.1 3527 unGetChan should be able to interrupt readChan bug closed normal 7.0.1 3555 Vectorisation error with negative Double const rl feature request closed normal -- 3560 Template Haskell attempts to load unnecessary packages bug closed normal -- 3581 Compiling with optimizations on hurts performance bug closed normal -- 3596 getOptions'.parseLanguage(1) went past eof token bug closed normal -- 3609 ar.exe: Bad file number bug closed normal 6.12.1 3622 ghci ignores LANGUAGE TemplateHaskell pragma feature request closed normal -- 3623 Host's C info ending up in .hc files while cross-bootstrapping bug closed normal -- 3639 "GHC 6.10.1 fails to build with ""../includes/ghcautoconf.h: No such file or directory""" bug closed normal -- 3657 ffi-1.0 causes panic in 6.12.20091010 bug closed high 6.12.1 3666 Binary: Int64 truncated to fit in 32 bit Int bug closed normal -- 3688 getOptions'.parseLanguage(2) went past eof token bug closed normal -- 3689 GHCi bug on too long input lines bug closed normal -- 3691 Error message doesn't mention necessary extension in warning feature request closed normal 3708 more build errors for ghc-6.12.0.20091121 under solaris bug closed normal -- 3735 GHC specialising instead of inlining bug closed normal -- 3740 6.8.2: Cannot configure under Cygwin bug closed normal -- 3775 Pattern matching on Word literals in GHCi crashes. bug closed normal -- 3779 dodgey warning about redundant class method imports bug closed normal 3798 Problem with wxHaskell bug closed low 7.2.1 3820 Pragma for suppressing 'orphan instance' warnings per instance feature request closed normal 3824 parse error on gadt pragma bug closed normal 3825 """went past eof token"" crash when using -XOverLoadedStrings" bug closed normal -- 3842 build system does not pass selected gcc when configuring unix package bug closed normal 3871 Missing reference in manpage bug closed lowest 7.6.1 3886 Standalone deriving of NFData causes panic bug closed normal 3925 GHC 6.13.20100316 can't compile numbers - package bug closed normal 3926 STM-based program not terminating bug closed normal 3947 ghc: panic! (the 'impossible' happened) bug closed normal 3949 unsafeCoerce leaks types bug closed normal -- 3954 Contexts on empty data decls falsely rejected bug closed normal -- 3970 ghc-pkg list segfaults in ghc-6.12.1.20100330 bug closed normal 3974 Duplicate bug: (see #3975) filepath: normalise trailing dot proposal closed normal -- 3989 Parallel GC with more -N than physical processors gives dramatic slowdown (75 times) bug closed normal 4036 Compiled FFI static imports are invalid when imported in GHCI bug closed normal 4055 Incorrect parsing of declarations bug closed normal 4059 possible error in foreign wrapper reentering Haskell bug closed normal 4073 Error with '#' at beginning of line in literate Haskell bug closed normal 7.4.1 4082 top level TH splices accepted with -XNoTemplateHaskell bug closed normal 4084 minor External Core prettyprinter bug bug closed normal 4145 Interpreter mode can not parse list with 30k entries ... bug closed normal 4153 GHCi linker should load archives feature request closed normal 4161 Space leak with lazy splitAt and (++) bug closed normal 4177 GHCi should allow custom definition of print for implicit output feature request closed low 7.6.2 4181 Template Haskell + -fdicts-strict fails bug closed normal 7.0.1 4191 Replace -fstrict-dicts with programmer-custom strictness annotations for class contexts simonpj feature request closed normal 4217 Haskell Platform for Mac depends on a non-standard /opt/local/bin/perl bug closed normal 4231 Cannot build ghc-6.13.20100729 HEAD package in Mac OS X Leopard bug closed normal 4247 getCPUTime on x86_64 Mac OS X 10.6 igloo bug closed high 7.2.1 4260 GHC Mac installer Perl path feature request closed normal -- 4261 Add strict version of foldlWithKey to Map proposal closed normal -- 4276 -O0 runs in constant space, -O1 and -O2 don't igloo bug closed normal 7.4.1 4388 Unexpected failures, too much allocation bug closed high 7.4.1 4399 Infinite loop when compiling Haskell '98 code bug closed normal 4403 Huge (10 times) increase of binaries produced by GHC 7.0.0 and GHC head bug closed normal 4411 Incorrect defined but not used warning with record wildcards bug closed normal -- 4416 Quasiquoting without bloating feature request closed normal 4425 "the ""impossible happened"" while building regex-posix-0.94.4 with GHC 7" bug closed normal -- 4458 ghc: panic while installing hcodecs bug closed normal 4467 Too many literals? bug closed normal 4496 add a configure build option to use system libffi for Linux feature request closed normal 7.6.2 4509 System.Timeout inoperative with Data.IORef bug closed normal 4515 ghc 7.0.1 panic: dsLet: unlifted bug closed normal 4518 RebindableSyntax turns off NoImplicitPrelude bug closed normal 4519 Do not link in unused code feature request closed normal 7.4.1 4536 SampleVar could also be an instance of Eq and Typable proposal closed normal 4822 build failures on ARM linux with gcc4.5 bug closed normal 4835 Segfault when reading lots of files bug closed highest 7.0.2 4893 panic! the 'impossible' happened: initC: srt_lbl bug closed normal 7.0.2 4911 GHC 7 does not process Handle correctly bug closed normal 4936 Unbox sum types without fields feature request closed normal 4950 Typechecking regression bug closed highest 7.0.2 4972 ghc-7.0.1.20110217 crash bug closed normal -- 5017 Stage 1 core lint error: compiler/utils/Util.lhs bug closed normal 5020 Build Error on GHC 7.0.2 with Yesod bug closed normal -- 5043 Compiling bytestring-mmap with -fvia-C yields broken .s file, two .size directives bug closed normal 7.2.1 5057 poor parser error message feature request closed normal 5074 GHCi-7 not importing (some?) re-exported instances bug closed normal 5087 No instance for (Functor ((->) b0)) arising from a use of `<$>' bug closed normal -- 5098 GHC fails to compile yi 0.6.3.0 bug closed normal 5099 snap-0.4.1 ExitFailure 1 bug closed normal 5107 ghc-7.0.2 panic with cabal install bug closed normal 5111 linux-powerpc : segfault in stage2 compiler bug closed normal _|_ 5137 Time profiling often shows strange information bug closed normal 5153 System.Environment.getArgs does not UTF-8 decode arguments even in UTF-8 locale bug closed normal -- 5165 GHC doesn't optimize FP excess precision properly bug closed low 7.6.1 5174 Running out of OS threads in a server bug closed normal 5189 incorrect pragma syntax leeds to panic bug closed normal 5191 panic! (the 'impossible' happened) - thread blocked indefinitely in an MVar operation bug closed normal 5199 linkBCO: >= 64k insns in BCO bug closed normal 5258 Mantee Compilation bug closed normal 5283 Arrow command combinators: addTickHsExpr explodes in GHCi bug closed normal 5312 panic! (the 'impossible' happened) bug closed normal 5368 GHCi crash: thread blocked indefinitely in an MVar operation simonmar bug closed high 7.4.1 5370 GHC 7.2.1 rc1 crashes while compiling the text package bug closed normal 5386 GHCi crashes with SIGFPE when using double-conversion package bug closed high 7.4.1 5418 Constructor import error message suggests invalid syntax bug closed normal 5474 Add facility for emitting heap profile marker feature request closed normal 5479 The impossible happened! bug closed normal 5488 GHC-7.2.1 standalone failed to bootstrap ghc-HEAD on windows bug closed normal -- 5503 32-bit testsuite failures bug closed normal 5504 Inconsistent sizes for struct rlimit bug closed normal 5519 Some unicode symbols are not allow in literal characters or strings bug closed normal -- 5523 Mistake in error messages for importing infix constructors bug closed normal -- 5544 threadDelay with large values crashes the IO manager on 64-bit OS X bug closed high 7.4.3 5565 ghc reports a bug after interrupt bug closed normal 5571 factorial.hs:3:12: Parse error in pattern: n + 1 bug closed normal 5617 TH instance declaration quotes broken bug closed normal 5662 GHCi crashes in context of banana bracket in arrow notation bug closed normal 5673 GHCi ignores {-# LANGUAGE OverloadedStrings #-} bug closed normal 5674 Allow type signatures in instance declarations feature request closed normal 5681 par# and spark# call newSpark differently, confuses LLVM backend dterei bug closed normal -- 5683 bug in signum function bug closed normal 7.6.1 5703 vector fails to compile due to simplifier ticks exhausted bug closed normal -- 5711 ghci asked me to report this bug closed normal 5729 ForeignPtr leak in ghci bug closed normal -- 5730 unicode characters in cabal path leads to package installation failure bug closed normal 7.6.1 5752 <> when using variables in TH splice bug closed normal 7.6.1 5774 main = forever (putStrLn =<< getLine) continuously saturates a CPU when compiled bug closed normal 5784 Forked thread running infinite loop blocks other threads from running bug closed normal 5796 Runtime caught in an infinite loop bug closed normal -- 5803 Chash on terminate during getLine bug closed normal 5822 Assertion failed in rts/Schedule.c in Stage 2 on ARM bug closed normal -- 5876 Dynamically linked programs can't be run on Windows without significant effort bug closed normal 5887 ghci win7 ctrl+c panic bug closed normal 5906 The 'Impossible' Happened, thread blocked indefinitely in an MVar operation bug closed normal 5940 Unicode characters in the command line get messed up bug closed normal 5956 Annotate heap profile at certain times feature request closed normal 5990 Malformed instance declaration produces panic bug closed normal 5997 GHC fails to make function tail recursive bug closed normal 6003 ghci should complain when the user imports non-existent modules bug closed normal 6013 the 'impossible' happened bug closed normal 7.6.1 6029 GHC fails to stop at phase HCc bug closed normal -- 6033 Could not install hmatrix, windows 7 bug closed normal 6043 ARM build fails bug closed normal -- 6051 Parsing type constraints in GHC 7.4.1 bug closed normal -- 6066 Constraint Kinds don't work with Template Haskell bug closed normal -- 6073 Lower case character in deriving statement crashes GHC 7.4.1 bug closed normal 7.6.1 6077 Respect XDG_CONFIG_HOME feature request closed normal 6115 ghc panic in long list of literals bug closed normal -- 6136 gettimeofday should not be used to schedule timeouts bug closed normal 7.6.1 6144 Preprocessor line control suppressed by comments bug closed normal 7035 `deriving instance Generic (HsExpr Id)` raises panic dreixel bug closed normal 7.8.1 7039 Panic due 'instance Foo a => Bar a => Baz a' style declarations bug closed normal 7042 large exponents cannot be compiled pcapriotti bug closed normal 7.6.1 7052 Numeric types’ Read instances use exponential CPU/memory bug closed normal 7.6.1 7055 "GHCi loadArchive ""libiconv.a"":failed Unknown PEi386 section name `.drectve'" bug closed normal -- 7079 Irrefutable pattern failed for pattern Data.Maybe.Just bug closed normal 7087 'select' fails for very large arguments to 'threadDelay' bug closed normal 7.6.1 7093 Exception when encountering instance declarations without class name bug closed normal 7096 linker fails to load package with binding to foreign library bug closed normal -- 7110 Stack overflow when compiling with optimizations bug closed normal 7125 HEAD build fails with ghc-7.4.1 (XCode 3.2.6, Mac OS X 10.6.8) simonmar bug closed normal 7142 ghc: panic! (the 'impossible' happened) when using lowercase eq/show in deriving bug closed normal -- 7155 Fails to build on powerpc with -Werror : The import of `CmmCallConv' is redundant bug closed normal 7174 panic when using function in 'deriving' data declaration bug closed normal -- 7183 "Spelling ""show"" with lovercase causes compiler crash" bug closed normal -- 7197 ghc panic: Irrefutable pattern failed bug closed normal 7201 ghc assumes that ld can understand --hash-size [regression] bug closed normal 7207 linker fails to load package with binding to foreign library (win64) bug closed normal 7.8.1 7208 ghci panic: nameModule show{tv a9W} bug closed normal -- 7235 """panic!"" when compiling happstack-server-7.0.4" bug closed normal 7236 ghc panic bug closed normal 7252 Impossible error when deriving lower-cased type class (nameModule show{tv a9Y}) bug closed normal -- 7265 directory 1.2.0.0 build fails on 7.4.2 bug closed normal 7274 hp2ps sometimes creates invalid postscript files bug closed normal -- 7322 The 'impossible happened' compiling with -fext-core bug closed normal -- 7355 panic when bang is misplaced: tc_hs_type: bang bug closed normal 7357 GHC.exe gives an internal error while linking vector's Monadic.hs bug closed normal 7.8.1 7358 ghc: panic! (The 'impossible' happened) from RnSource.lhs bug closed normal -- 7369 Simplifier bug(?) bug closed normal 7376 strict field + type constructor of kind * -> * or higher causes ghc panic bug closed normal -- 7392 """the impossible happened"" when compiling Types.Substitutions" bug closed normal 7403 Segmentation fault bug closed normal 7422 GHC panics while trying to derive Generic for GADT with kind-lifted phantom parameter bug closed normal 7423 panic on typo in deriving clause bug closed normal -- 7426 import Foo hiding (X) should not be a fatal error when X is not exported by Foo bug closed normal 7441 kindFunResult Error bug closed normal 7446 GHC -O0 goes into a loop bug closed normal -- 7449 Segmentation fault in floor function bug closed normal 7455 ghc panic on show bug closed normal -- 7467 the impossible happened? bug closed normal -- 7499 Case-inspecting unboxed unit causes codegen crash bug closed normal 7523 segfault when ignoring invalid byte sequence when decoding UTF8//IGNORE bug closed normal -- 7528 Non terminating thunk resolution blocks world, even in the case of forkOS bug closed normal 7529 Crash when using (->) instead of (=>) in a typeclass instance bug closed normal -- 7538 Panic on Irrefutable Pattern Failure bug closed normal -- 7548 GHC API dependency analysis is broken bug closed highest 7.8.1 7549 Deriving Bug? bug closed normal -- 7550 "incorrect bang patterns rejected with ""report a ghc bug""" bug closed normal -- 7553 ghc fails to terminate with -O2 or greater bug closed normal 7555 SpecConstr pass hangs bug closed normal 7561 Unnecessary Heap Allocations - Slow Performance bug closed normal 7.8.1 7564 GHC fails without an error when building text-0.11.2.3 bug closed normal 7566 exception when loading bug closed normal -- 7568 Can't dynamically load DLL-using libraries on Windows x86_64 bug closed normal 7581 ghc crashed on trying compiling a file generated by Alex bug closed normal 7599 timeout does not behave as expected bug closed normal 7614 tc_hs_type: bang : The impossible happened bug closed normal 7616 ghci loading package base linking crash bug closed normal 7618 Multiline prompt ignores custom prompt bug closed normal 7648 please don't include mingw and mingw64 in main src tarball bug closed normal 7663 consider free variables as well as parameters in inline discounts feature request closed normal -- 7664 consider free variables as well as parameters in inline discounts feature request closed normal 7675 Program lives on with dead main thread bug closed normal 7701 compiler exception when -> is used instead of => in instance definition bug closed normal -- 7711 Multi-line input mode in ghci doesn't obey :set prompt bug closed normal -- 7777 ghc panic: varargs + sets bug closed normal -- 7781 Dumb error message when trying to runghc a module with no 'main' function bug closed normal -- 7795 panic! the impossible happened bug closed normal -- 7802 kindFunResult in monad transformer bug closed normal -- 7821 PPC cross-compile impossible happened bug closed normal 7822 Undeclared errors from CMM files during GHC PPC cross compiler build bug closed normal 7826 GHC internal error: `a' is not in scope during type checking, but it passed the renamer bug closed normal -- 7832 In function 'stg_ap_0_fast' 'debugBelch' undeclared bug closed normal 7839 "After forkIO'ing on Intel Mac, putStrLn (presumably) reports ""hPutChar: failed (Operation not supported)""" bug closed normal -- 7852 panic: kindFunResult ghc-prim:GHC.Prim.*{(w) tc 34d} bug closed high 7.8.1 7882 #line with empty filename leads to crash bug closed normal -- 7886 data command does not work on WinGHCi bug closed normal -- 7891 Can't write type signature for top-level polymorphic pattern binding bug closed normal 7893 GHCi :k shouldn't require type family arguments bug closed normal -- 7896 Type constructor is accepted as context bug closed normal -- 7899 Strange behavior of -ddump-minimal-imports bug closed normal -- 7900 The impossible happend bug closed normal -- 7911 The following code makes ghc panic bug closed normal -- 7920 type-checker panic (kindFunResult) bug closed normal --