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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
#8085 Both GHC and its installer don't run on current Debian Stable new normal Compiler
#8159 Uses of Binary decode should have a proper error message new low Compiler
#8796 -ddump-splices prints to error stream new normal Compiler
#8959 GHCi should honour UnicodeSyntax new low Compiler
#8964 split_marker_entry assert breaks -split-objs and -ddump-opt-cmm new lowest Compiler
#8988 Documentation build fails if GHCi is unavailable new normal Compiler (Type checker)
#8253 example "Core syntax" is ancient new normal Documentation
#8879 System.IO.Error documentation refers to invalid module Control.Exception.Exception new normal Documentation
#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
#4048 ghc-pkg should check for existence of extra-libraries new low 7.6.2 Package system
#8539 Data.Complex shouldn't use default implementation of (**) new low Prelude
#8303 defer StackOverflow exceptions (rather than dropping them) when exceptions are masked new thoughtpolice high 7.8.3 Runtime System
#8939 Should check the return value of clock_gettime new simonmar normal Runtime System
#9003 GHC eventlog: thread stop status codes modified (breaking ghc-events, threadscope, edentv) new simonmar normal 7.8.3 Runtime System
#8664 libffi does not recognize AArch64 (ARM64) new normal libraries (other)
#8532 Hyperbolic arc cosine fails on (-1) :: Complex r. new low libraries/base
#8712 Data.Ix missing info on row/column major indexing new normal libraries/base
#1487 unix package: test needed for getLoginName new adrien lowest 7.6.2 libraries/unix

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

Ticket Summary Status Owner Priority Milestone Component
#149 missed CSE opportunity new normal Compiler
#1466 Stack check for AP_STACK new simonmar normal 7.6.2 Compiler
#1498 Optimisation: eliminate unnecessary heap check in recursive function new low 7.6.2 Compiler
#4451 Re-linking avoidance is too aggressive new normal 7.6.2 Compiler
#8427 GHC accepts invalid program because of EPS poisoning new normal 7.10.1 Compiler
#8790 rts: unrust 'libbfd' debug symbols parser new normal Compiler
#8949 switch -msse2 to be on by default new normal Compiler (CodeGen)
#670 External Core is broken new tim normal External Core
#1057 Implicit parameters on breakpoints new normal GHCi
#1400 :set +r doesn't work for interpreted modules new simonmar normal GHCi
#8713 Avoid libraries if unneeded (librt, libdl, libpthread) new normal GHCi
#7695 Hang when locale-archive and gconv-modules are not there new trommler normal 7.8.3 None
#806 hGetBufNonBlocking doesn't work on Windows new normal libraries/base
#8345 A more efficient atomicModifyIORef' new normal 7.10.1 libraries/base
#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
#1693 Make distclean (still) doesn't new lowest 7.6.2 Build System
#2933 LDFLAGS ignored by build system new lowest 7.6.2 Build System
#3003 Happy does not reject pragmas new lowest 7.6.2 Build System
#3354 binaries built with GHC on Mac OS X 10.5 (Leopard) do not work on 10.4 (Tiger) new normal Build System
#3470 OSX installer should give an informative error message when XCode is missing new lowest 7.6.2 Build System
#3472 Porting through .hc files broken new high 7.8.3 Build System
#3509 libffi.so not found on Mac OS X (10.5.8) new lowest 7.6.2 Build System
#4366 in-tree GMP build problem with shared libraries new low 7.6.2 Build System
#7152 Add flag to configure that skips overwriting of symlinks on install new thoughtpolice high 7.8.3 Build System
#7367 Optimiser / Linker Problem on amd64 new normal 7.8.3 Build System
#7452 [GNU gold] ld: error: cannot find [...]/Types__1.o new high 7.8.3 Build System
#7651 Buiding GHC with parallel IO manager freezes on Mac (not on FreeBSD) new high 7.8.3 Build System
#7779 building GHC overwrites the installed package database if GHC_PACKAGE_PATH is set new normal 7.8.3 Build System
#7810 make show VALUE=VAR depends on ghc-stage1 new normal 7.8.3 Build System
#8056 Make Install fails on HEAD new normal Build System
#8373 Cross-compiling from x86_64-unknown-linux-gnu to x86_64-sun-solaris2 tries to run target compiled inplace/lib/bin/mkGmpDerivedConstants on host/build new normal Build System
#8374 `tcIfaceGlobal (local): not found` while compiling new thoughtpolice high Build System
#8378 Cross-compiling from x86_64-unknown-linux-gnu to x86_64-sun-solaris2 with mkGmpConstants workaround fails to build objects for integer-gmp new normal Build System
#8465 ./configure fails on ghc-7.6.3: does not find installed libgmp.so.3 and current directory new normal Build System
#8709 `make 1` does not work (well) new normal Build System
#8784 Makefile missing a dependency new normal Build System
#8866 scavenge_stack: weird activation record found on stack on "cabal install -j" new normal 7.8.3 Build System
#8919 Why is xhtml library installed but not exported to users? new normal 7.8.3 Build System
#8951 genSym uses atomic_inc but doesn't link arm_atomic_spin_lock new normal 7.8.3 Build System
#8983 sync-all get should respect branches new low Build System
#1853 hpc mix files for Main modules overwrite each other new AndyGill lowest 7.6.2 Code Coverage
#2224 -fhpc inteferes/prevents rewrite rules from firing new andy@… lowest 7.6.2 Code Coverage
#2991 .mix files generation broken with -fhpc and --make flags with lhs modules new andy@… lowest 7.6.2 Code Coverage
#3191 hpc reports spurious results with .lhs files even after processing with ghc -E new andy@… lowest 7.6.2 Code Coverage
#3376 hpc and CPP don't mix on Windows new andy@… lowest 7.6.2 Code Coverage
#7033 stale .tix files can cause programs built with -fhpc to segfault new normal 7.8.3 Code Coverage
#322 fromInteger-related pattern match overlap warnings new simonpj normal Compiler
#367 Infinite loops can hang Concurrent Haskell new ezyang lowest Compiler
#487 powerpc/linux segfaulting binaries new normal Compiler
#781 GHCi on x86_64, cannot link to static data in shared libs new high 7.8.3 Compiler
#917 -O introduces space leak new lowest Compiler
#947 ghc -O space leak: CSE between different CAFs new normal Compiler
#1158 Problem with GADTs and explicit type signatures new simonpj lowest Compiler
#1168 Optimisation sometimes decreases sharing in IO code new normal Compiler
#1171 GHC doesn't respect the imprecise exceptions semantics new low Compiler
#1176 Infinite loop when printing error message new thorkilnaur low Compiler
#1216 Missed opportunity for let-no-esape new simonpj normal 7.6.2 Compiler
#1307 Warning refers to code not in the source new lowest Compiler
#1308 Type signature in warning is wrong new normal Compiler
#1526 -fobject-code doesn't apply to expressions typed at the prompt new normal Compiler
#1544 Derived Read instances for recursive datatypes with infix constructors are too inefficient new normal 7.6.2 Compiler
#1883 GHC can't find library using "short" name new lowest 7.6.2 Compiler
#1978 Error message: Undefined reference to `XXX_closure' new normal Compiler
#2028 STM slightly conservative on write-only transactions new lowest 7.6.2 Compiler
#2031 relocation overflow new normal Compiler
#2057 inconsistent .hi file error gets ignored new normal Compiler
#2132 Optimise nested comparisons new normal Compiler
#2147 unhelpful error message for a misplaced DEPRECATED pragma new lowest 7.6.2 Compiler
#2159 Use a more efficient representation than [DynFlag] new lowest 7.6.2 Compiler
#2255 Improve SpecConstr for free variables new normal Compiler
#2256 Incompleteness of type inference: must quantify over implication constraints new simonpj lowest 7.6.2 Compiler
#2273 inlining defeats seq new lowest 7.6.2 Compiler
#2289 Needless reboxing of values when returning from a tight loop new lowest 7.6.2 Compiler
#2346 Compilation of large source files requires a lot of RAM new lowest 7.6.2 Compiler
#2356 GHC accepts multiple instances for the same type in different modules new low Compiler
#2370 num009 fails on OS X 10.5? new lowest 7.6.2 Compiler
#2387 Optimizer misses unboxing opportunity new lowest 7.6.2 Compiler
#2439 Missed optimisation with dictionaries and loops new simonpj lowest 7.6.2 Compiler
#2465 View + Pattern Match not fused sufficiently new low Compiler
#2530 deriving Show adds extra parens for constructor with record syntax new lowest 7.6.2 Compiler
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