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Difficulty: Difficult (2-5 days) (1 match)

Ticket Summary Status Owner Priority Milestone Component
#4012 Compilation results are not deterministic new high 7.6.2 Compiler

Difficulty: Easy (less than 1 hour) (18 matches)

Ticket Summary Status Owner Priority Milestone Component
#8303 defer StackOverflow exceptions (rather than dropping them) when exceptions are masked new thoughtpolice high 7.8.3 Runtime System
#8085 Both GHC and its installer don't run on current Debian Stable new normal Compiler
#8253 example "Core syntax" is ancient new normal Documentation
#8664 libffi does not recognize AArch64 (ARM64) new normal libraries (other)
#8712 Data.Ix missing info on row/column major indexing new normal libraries/base
#8796 -ddump-splices prints to error stream new normal Compiler
#8879 System.IO.Error documentation refers to invalid module Control.Exception.Exception new normal Documentation
#8939 Should check the return value of clock_gettime new simonmar normal Runtime System
#8988 Documentation build fails if GHCi is unavailable new normal Compiler (Type checker)
#9003 GHC eventlog: thread stop status codes modified (breaking ghc-events, threadscope, edentv) new simonmar normal 7.8.3 Runtime System
#4048 ghc-pkg should check for existence of extra-libraries new low 7.6.2 Package system
#8159 Uses of Binary decode should have a proper error message new low Compiler
#8532 Hyperbolic arc cosine fails on (-1) :: Complex r. new low libraries/base
#8539 Data.Complex shouldn't use default implementation of (**) new low Prelude
#8873 /cygdrive/c/Program Files (x86)/Haskell Platform/2013.2.0.0/bin/ghcii-7.6.3.sh/../ghc: No such file or directory new low GHCi
#8959 GHCi should honour UnicodeSyntax new low Compiler
#1487 unix package: test needed for getLoginName new adrien lowest 7.6.2 libraries/unix
#8964 split_marker_entry assert breaks -split-objs and -ddump-opt-cmm new lowest Compiler

Difficulty: Moderate (less than a day) (15 matches)

Ticket Summary Status Owner Priority Milestone Component
#149 missed CSE opportunity new normal Compiler
#670 External Core is broken new tim normal External Core
#806 hGetBufNonBlocking doesn't work on Windows new normal libraries/base
#1057 Implicit parameters on breakpoints new normal GHCi
#1400 :set +r doesn't work for interpreted modules new simonmar normal GHCi
#1466 Stack check for AP_STACK new simonmar normal 7.6.2 Compiler
#4451 Re-linking avoidance is too aggressive new normal 7.6.2 Compiler
#7695 Hang when locale-archive and gconv-modules are not there new trommler normal 7.8.3 None
#8345 A more efficient atomicModifyIORef' new normal 7.10.1 libraries/base
#8427 GHC accepts invalid program because of EPS poisoning new normal 7.10.1 Compiler
#8713 Avoid libraries if unneeded (librt, libdl, libpthread) new normal GHCi
#8790 rts: unrust 'libbfd' debug symbols parser new normal Compiler
#8949 switch -msse2 to be on by default new normal Compiler (CodeGen)
#1498 Optimisation: eliminate unnecessary heap check in recursive function new low 7.6.2 Compiler
#5063 unix package has untracked dependency on libbsd new trommler low 7.10.1 libraries/unix

Difficulty: Rocket Science (1 match)

Ticket Summary Status Owner Priority Milestone Component
#8935 Obscure linker bug leads to crash in GHCi new simonmar high 7.8.3 Runtime System

Difficulty: Unknown (65 matches)

Ticket Summary Status Owner Priority Milestone Component
#5987 Too many symbols in ghc package DLL new thoughtpolice highest 7.8.3 Compiler
#7478 setSessionDynFlags does not always work new highest 7.8.3 Compiler
#7602 Threaded RTS performing badly on recent OS X (10.8?) new thoughtpolice highest 7.8.3 Runtime System
#8115 GHC 64-bit Windows build failures with LLVM new highest Compiler
#8228 GHC built under Windows does not generate dyn_hi files new thoughtpolice highest 7.8.3 Compiler
#8376 Static Executable + GHC API (+ Dynamic Linking?) gives Segfault new thoughtpolice highest 7.8.3 Compiler
#9001 unexpected runtime crash new simonmar highest 7.8.3 Runtime System
#314 #line pragmas not respected inside nested comments new high 7.8.3 Compiler (Parser)
#781 GHCi on x86_64, cannot link to static data in shared libs new high 7.8.3 Compiler
#2725 Remove Hack in compiler/nativeGen/MachCodeGen.hs new thoughtpolice high 7.8.3 Compiler (NCG)
#3472 Porting through .hc files broken new high 7.8.3 Build System
#3831 SpecConstr should exploit cases where there is exactly one call pattern new simonpj high 7.8.3 Compiler
#3927 Incomplete/overlapped pattern warnings + GADTs = inadequate new simonpj high 7.8.3 Compiler
#4144 Exception: ToDo: hGetBuf - when using custom handle infrastructure new high 7.10.1 libraries/base
#4245 ghci panic: thread blocked indefinitely in an MVar operation new tibbe high 7.6.2 GHCi
#5051 Typechecker behaviour change new high 7.2.1 Compiler
#5442 ghc-pkg unregister --user/--global/--package-conf not normative new bgamari high 7.8.3 ghc-pkg
#5539 GHC panic - Simplifier ticks exhausted new simonpj high 7.6.2 Compiler
#5620 Dynamic linking and threading does not work on Windows new high 7.6.2 Runtime System
#5642 Deriving Generic of a big type takes a long time and lots of space new dimitris high 7.6.2 Compiler
#5763 Confusing error message new simonpj high 7.6.2 Compiler
#5780 -faggressive-primops change caused a failure in perf/compiler/parsing001 new high 7.8.3 Compiler
#5859 unsafeInterleaveIO duplicates computation when evaluated by multiple threads new simonpj high 7.6.2 libraries/base
#5902 Cannot tell from an exception handler whether the exception was asynchronous new simonmar high 7.8.3 Compiler
#5954 Performance regression 7.0 -> 7.2 (still in 7.4) new simonpj high 7.6.2 Compiler
#6022 GHC infers over-general types new simonpj high 7.8.3 Compiler
#6098 debugger does not know the correct type for a newtype field new ptc high 7.8.3 GHCi
#6166 Performance regression in mwc-random since 7.0.x new high 7.6.2 Compiler
#7056 GHCi loadArchive "libiconv.a":failed Unknown PEi386 section name `.drectve' new thoughtpolice high 7.8.3 GHCi
#7068 Extensive Memory usage (regression) new simonpj high 7.8.3 Compiler
#7097 linker fails to load package with binding to foreign library new high 7.8.3 Runtime System
#7103 Compiler panic, when loading wxc in GHCi new high 7.6.2 GHCi
#7143 ghc-7.6.0.20120810-x86_64-windows.exe -> ghc can't figure out LLVM version new dterei high 7.8.3 Compiler (LLVM)
#7152 Add flag to configure that skips overwriting of symlinks on install new thoughtpolice high 7.8.3 Build System
#7198 New codegen more than doubles compile time of T3294 new simonmar high 7.8.3 Compiler
#7200 template-haskell-2.7.0.0 fails to build with GHC 7.0.4 due to missing pragma new duncan high 7.8.3 Template Haskell
#7273 Binary size increase in nofib/grep between 7.6.1 and HEAD new high 7.8.3 Compiler
#7277 Recompilation check fails for TH unless functions are inlined new high 7.6.2 Template Haskell
#7289 Mingw FPU init not Windows compatible. new high 7.8.3 Runtime System
#7298 Test 2228 fails with dynamic-by-default new high 7.8.3 GHCi
#7320 GHC crashes when building on 32-bit Linux in a Linode new simonmar high 7.6.2 Runtime System
#7325 threadDelay mistreats minBound and maxBound in some configurations new high 7.6.2 Runtime System
#7411 Exceptions are optimized away in certain situations new high 7.8.3 Compiler
#7428 GHC compile times are seriously non-linear in program size new high 7.8.3 Compiler
#7452 [GNU gold] ld: error: cannot find [...]/Types__1.o new high 7.8.3 Build System
#7490 ghc-stage1 panic when building a cross-compiler or cross-building a compiler new high 7.8.3 Compiler
#7521 Simplifier ticks exhausted when compiling Accelerate example. new high 7.8.3 Compiler
#7567 invalidateModSummaryCache throws exception if ms_hs_date is 0 new high 7.8.3 Compiler
#7598 ghc-stage1 generates wrong assembler on StgCmmPrim (operand out of range) new high 7.8.3 Compiler
#7651 Buiding GHC with parallel IO manager freezes on Mac (not on FreeBSD) new high 7.8.3 Build System
#7679 Regression in -fregs-graph performance new high 7.8.3 Compiler (NCG)
#8168 ghc "Simplifier ticks exhausted" "When trying UnfoldingDone" new high Compiler
#8224 Excessive system time -- new IO manager problem? new high 7.8.3 Runtime System
#8279 bad alignment in code gen yields substantial perf issue new high 7.10.1 Compiler
#8362 Filesystem related tests failed on solaris (SmartOS) new high 7.8.3 libraries (other)
#8374 `tcIfaceGlobal (local): not found` while compiling new thoughtpolice high Build System
#8528 Preprocessor issues building GHC HEAD on Mavericks new high Compiler
#8626 Bad magic. Expected: feedfacf, got: feedface new high GHCi
#8736 GHCi doesn't load .dyn_o files appropriately new thoughtpolice high 7.8.3 Compiler
#8746 Crosscompiling new high 7.8.3 Compiler
#8787 compiler/ghc.mk: restore GhcHcOpts variable handling new thoughtpolice high 7.10.1 Compiler
#8789 includes/stg/SMP.h: use 'NOSMP' instead of never defined 'WITHSMP' new thoughtpolice high 7.10.1 Compiler
#8819 64bit Testsuite failures in unregisterised 7.8 RCs new high Compiler
#8974 64 bit windows executable built with ghc-7.9.20140405+LLVM segfaults new high 7.8.3 Compiler (LLVM)
#9007 fails to build with hardening flags enabled (relocation R_X86_64_32 against `stg_CHARLIKE_closure'...) new simonmar high 7.8.3 Compiler
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