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  • Glasgow Haskell Compiler
  • GHCGHC
  • Issues

  • Open 2,771
  • Closed 12,275
  • All 15,046
New issue
  • Priority Created date Last updated Milestone due date Due date Popularity Label priority Manual Weight
  • libffi copies files into rts build tree
    #16272 · opened Feb 01, 2019 by Matthew Pickering   5   Pnormal Trac import bug hadrian
    • CLOSED
    • 3
    updated Jul 07, 2019
  • Remove ghctags
    #16274 · opened Feb 01, 2019 by Artem Pelenitsyn   8.10.1   5   Pnormal Trac import newcomer task
    • CLOSED
    • 7
    updated Jul 07, 2019
  • Lexer: Alternate Layout Rule injects actual not virtual braces
    #16279 · opened Feb 02, 2019 by Alan Zimmerman   8.8.1   5   API annotations Pnormal Trac import bug parser
    • CLOSED
    • 3
    • 2
    updated Jul 07, 2019
  • Update Latest page of User's Guide to GHC 8.6.3
    #16280 · opened Feb 03, 2019 by wataru86   5   Pnormal Trac import task
    • CLOSED
    • 1
    updated Jul 07, 2019
  • PatternSynonyms doesn't accept non-prenex quantified functions, doesn't float foralls
    #16281 · opened Feb 03, 2019 by Icelandjack   5   Pnormal PatternSynonyms Trac import bug
    • CLOSED
    • 2
    updated Jul 07, 2019
  • all-missed-specializations doesn't suggest warning
    #16282 · opened Feb 03, 2019 by Eric Crockett   3   Plow Trac import bug error messages newcomer
    • CLOSED
    • 2
    • 1
    updated Jul 07, 2019
  • :kind accepts bogus type
    #16287 · opened Feb 05, 2019 by Simon Peyton Jones   8.8.1   5   Pnormal Trac import bug
    • CLOSED
    • 3
    • 5
    updated Jul 07, 2019
  • Core Lint error: Occurrence is GlobalId, but binding is LocalId
    #16288 · opened Feb 05, 2019 by Krzysztof Gogolewski   8.8.2   5   Pnormal Trac import bug compiler crash simplifier
    • CLOSED
    • 6
    updated Jan 16, 2020
  • GHC thinks pattern match is exhaustive
    #16289 · opened Feb 05, 2019 by dnspies   7   Phigh Trac import bug pattern match warnings
    • CLOSED
    • 2
    • 6
    updated Jul 07, 2019
  • Export `noinline` function from `GHC.Exts`
    #16290 · opened Feb 05, 2019 by Alexander Altman   5   Pnormal Trac import core libraries feature request
    • CLOSED
    • 2
    updated Jun 26, 2020
  • Document or enable commented-out sanity check in checkStackChunk
    #16291 · opened Feb 06, 2019 by Ömer Sinan Ağacan   5   Pnormal Trac import bug task
    • CLOSED
    • 2
    updated Jul 07, 2019
  • Wildcards in visible kind application
    #16292 · opened Feb 06, 2019 by Simon Peyton Jones   5   Pnormal Trac import bug
    • CLOSED
    • 3
    • 1
    updated Jun 05, 2020
  • Inconsistencies and oddities of Proxy#
    #16293 · opened Feb 06, 2019 by Ryan Scott   8.10.1   5   Pnormal Trac import bug
    • CLOSED
    • 4
    updated Jul 07, 2019
  • Code generation corrupts writes to Addr#
    #16294 · opened Feb 06, 2019 by Andrew Martin   10   Phighest Trac import bug
    • CLOSED
    • 2
    updated Jul 07, 2019
  • OccurAnal should not break the linter assumptions
    #16296 · opened Feb 08, 2019 by Arnaud Spiwack   9.0.1   5   Pnormal Trac import bug simplifier
    • CLOSED
    • 4
    updated Apr 06, 2020
  • Access violation and hang with template haskell
    #16297 · opened Feb 09, 2019 by jeiea   5   Pnormal Trac import bug compiler crash
    • CLOSED
    • 2
    updated Jul 07, 2019
  • :info pretty-prints data types with non-Type return kinds oddly
    #16299 · opened Feb 10, 2019 by Ryan Scott   8.10.1   5   Pnormal Trac import bug
    • CLOSED
    • 1
    updated Jul 07, 2019
  • Make TH always reify data types with explicit return kinds
    #16300 · opened Feb 10, 2019 by Ryan Scott   8.10.1   5   Pnormal StandaloneKindSignatures TemplateHaskell Trac import UnliftedNewtypes feature request
    • CLOSED
    • 12
    updated Jul 26, 2019
  • A non-function coerced to a function can cause a stg_ap_v_ret
    #16302 · opened Feb 11, 2019 by WheatWizard   5   Pnormal Trac import bug runtime crash
    • CLOSED
    • 5
    updated Jul 07, 2019
  • checkStack sanity check fails
    #16303 · opened Feb 11, 2019 by Ömer Sinan Ağacan   8.8.1   5   Pnormal Trac import bug
    • CLOSED
    • 3
    • 3
    updated Jul 07, 2019
  • Flag to instruct GHC not to use an environment file
    #16309 · opened Feb 12, 2019 by Richard Eisenberg   8.8.1   5   Pnormal Trac import feature request
    • CLOSED
    • 1
    • 6
    updated Jul 07, 2019
  • Program fails with "Impossible case alternative" when optimized
    #16310 · opened Feb 12, 2019 by Ryan Scott   5   Pnormal Trac import TypeInType bug runtime crash
    • CLOSED
    • 8
    updated Jul 07, 2019
  • Suggest -XExistentialQuantification for 'forall' in data declarations
    #16311 · opened Feb 12, 2019 by Vladislav Zavialov   8.8.1   5   Pnormal Trac import backport parser task
    • CLOSED
    • 5
    updated Jul 07, 2019
  • Optimization + adding an INLINE pragma triggers Core Lint error (Type of case alternatives not the same as the annotation on case)
    #16312 · opened Feb 13, 2019 by Ryan Scott   5   Pnormal Trac import bug compiler crash typed holes
    • CLOSED
    • 4
    • 7
    updated Apr 23, 2020
  • Pattern synonym implicit existential quantification
    #16315 · opened Feb 13, 2019 by Vladislav Zavialov   8.10.1   5   Pnormal Trac import bug
    • CLOSED
    • 11
    updated Jul 07, 2019
  • HIE files don't include module import/export information
    #16317 · opened Feb 14, 2019 by Matthew Pickering   7   Phigh Trac import bug hie files
    • CLOSED
    • 1
    updated Jul 07, 2019
  • Explicitly passing -package-env causes "Loaded package environment from .ghc.environment" message to be printed twice
    #16318 · opened Feb 14, 2019 by Ryan Scott   5   GHCi Pnormal Trac import bug package system
    • CLOSED
    • 1
    • 7
    updated Aug 10, 2020
  • Suggest -XScopedTypeVariables instead of -XRankNTypes
    #16321 · opened Feb 14, 2019 by Vladislav Zavialov   5   Pnormal Trac import feature request parser
    • CLOSED
    • 1
    updated Jul 21, 2020
  • "deriving newtype instance" generates an infinite loop
    #16322 · opened Feb 15, 2019 by paf31   5   Pnormal Trac import bug
    • CLOSED
    • 13
    updated Jul 07, 2019
  • Cannot deduce X error with X provided in TypeFamilies
    #16323 · opened Feb 15, 2019 by pjljvdlaar   5   Pnormal Trac import bug deriving
    • CLOSED
    • 2
    updated Dec 13, 2019
  • Implement visible dependent quantification
    #16326 · opened Feb 15, 2019 by Ryan Scott   8.10.1   5   Pnormal Trac import ghc proposal task visible dependent quantification
    • CLOSED
    • 5
    updated Jul 07, 2019
  • Type inference in presence of pattern matching on GADTs
    #16330 · opened Feb 16, 2019 by Sasa   3   GADTs Plow Trac import feature request
    • CLOSED
    • 1
    updated Jul 07, 2019
  • REGRESSION: --supported-languages lies about supported languages, again
    #16331 · opened Feb 16, 2019 by Herbert Valerio Riedel   8.8.1   10   Phighest Trac import bug
    • CLOSED
    • 1
    • 1
    • 23
    updated Feb 25, 2020
  • Cross compilation broken under Hadrian
    #16051 · opened Dec 15, 2018 by Ben Gamari   Make removal   10   Phighest Trac import bug hadrian well-typed priorities
    • CLOSED
    • 18
    updated May 25, 2020
  • Named wildcards in kinds
    #16334 · opened Feb 17, 2019 by Vladislav Zavialov   8.10.1   5   Pnormal Trac import bug partial type sigs typechecker
    • CLOSED
    • 2
    updated Mar 26, 2020
  • Build and deploy docker images on gitlab CI
    #16336 · opened Feb 18, 2019 by Matthew Pickering   5   Pnormal Trac import bug
    • CLOSED
    • 1
    updated Jul 07, 2019
  • Cannot put (.) or (!) type operators into an export list
    #16339 · opened Feb 19, 2019 by Ryan Scott   8.8.1   5   Pnormal Trac import backport bug parser
    • CLOSED
    • 4
    updated Jul 07, 2019
  • Standalone deriving for GADTs should avoid impossible cases
    #16341 · opened Feb 20, 2019 by mnoonan   9.2.1   5   GADTs Pnormal Trac import bug deriving
    • CLOSED
    • 1
    • 9
    updated Dec 31, 2020
  • Kind inference crash
    #16342 · opened Feb 20, 2019 by Simon Peyton Jones   8.10.1   5   Pnormal Trac import bug
    • CLOSED
    • 6
    updated Jul 07, 2019
  • GHC infers over-polymorphic kinds
    #16344 · opened Feb 20, 2019 by Simon Peyton Jones   8.10.1   5   Pnormal Trac import bug
    • CLOSED
    • 6
    updated Sep 02, 2019
  • Lint error on master: Occurrence is GlobalId, but binding is LocalId
    #16346 · opened Feb 20, 2019 by Simon Peyton Jones   8.10.1   5   Pnormal Trac import bug
    • CLOSED
    • 8
    updated Nov 07, 2019
  • GHC HEAD regression: piResultTys1
    #16347 · opened Feb 20, 2019 by Ryan Scott   8.10.1   10   Phighest Trac import TypeInType bug compiler crash typechecker
    • CLOSED
    • 3
    • 6
    updated Jul 07, 2019
  • GHC HEAD regression: tyConAppArgs
    #16348 · opened Feb 20, 2019 by Ryan Scott   8.10.1   10   Phighest Trac import bug compiler crash
    • CLOSED
    • 5
    updated Aug 26, 2019
  • Unexpected type application in default declaration
    #16356 · opened Feb 22, 2019 by Vladislav Zavialov   5   Pnormal Trac import bug typechecker
    • CLOSED
    • 4
    • 3
    updated May 05, 2020
  • Confusing ghci error message
    #16358 · opened Feb 23, 2019 by Levent Erkök   5   Pnormal Trac import bug
    • CLOSED
    • 2
    updated Jul 07, 2019
  • Test runner warns of missing basline for performance tests with expected changes
    #16359 · opened Feb 23, 2019 by davide   5   Pnormal Trac import bug perf tests testsuite
    • CLOSED
    • 2
    updated Sep 14, 2020
  • GHC fails when GHC_PACKAGE_PATH contains trailing slash
    #16360 · opened Feb 23, 2019 by Niklas Hambüchen   3   Plow Trac import bug newcomer
    • CLOSED
    • 5
    • 3
    updated Jul 07, 2019
  • Deriving a class via an instance that has a TypeError constraint using standalone deriving fails during compilation.
    #16362 · opened Feb 24, 2019 by j9794   5   Pnormal Trac import bug custom type errors
    • CLOSED
    • 7
    updated Jul 07, 2019
  • Panic when trying to openFile with -fdefer-type-errors
    #16367 · opened Feb 26, 2019 by vilem   5   GHCi Pnormal Trac import bug runtime crash
    • CLOSED
    • 3
    updated Jul 07, 2019
  • Boot GHC's libffi installation path leaks into stage1 build
    #16368 · opened Feb 26, 2019 by Sebastian Graf   ⊥   5   Pnormal Trac import bug hadrian
    • CLOSED
    • 5
    updated Jul 07, 2019
  • TypeApplications obscure "Variable not in scope" error message
    #16375 · opened Mar 01, 2019 by roland   5   Pnormal Trac import bug
    • CLOSED
    • 1
    updated Jul 07, 2019
  • GHCi HEAD silently accepts ill-kinded visible type applications with :type
    #16376 · opened Mar 01, 2019 by Ryan Scott   8.10.1   10   GHCi Phighest Trac import bug
    • CLOSED
    • 6
    updated Jan 03, 2021
  • `TypeError` in a pattern should flag inaccessible code
    #16377 · opened Mar 01, 2019 by Iavor S. Diatchki   5   Pnormal Trac import bug custom type errors typechecker
    • CLOSED
    • 2
    updated Jul 07, 2019
  • bkpcabal01 fails with recent Cabal
    #16378 · opened Mar 02, 2019 by Ben Gamari   8.8.1   10   Phighest Trac import bug
    • CLOSED
    • 6
    updated Jul 07, 2019
  • JuicyPixels build panics on s390x ghc-8.4.4
    #16379 · opened Mar 02, 2019 by Jens Petersen   5   Pnormal Trac import bug compiler crash
    • CLOSED
    • 6
    updated Jul 07, 2019
  • Regression: Implicitly kind variables not in scope
    #16381 · opened Mar 03, 2019 by Ben Gamari   8.10.1   10   Phighest Trac import bug typechecker
    • CLOSED
    • 2
    updated Jul 07, 2019
  • GHC infers ill-kinded type for typed TH splice with unlifted values
    #16384 · opened Mar 04, 2019 by Eric Seidel   8.10.1   5   Pnormal Trac import bug
    • CLOSED
    • 1
    • 6
    updated Jul 07, 2019
  • Lousy error message for `instance forall c. c`
    #16385 · opened Mar 04, 2019 by Ryan Scott   8.10.1   5   Pnormal Trac import bug error messages
    • CLOSED
    • 1
    updated Jul 07, 2019
  • Duplicate vsnwprintf symbol on Windows
    #16387 · opened Mar 04, 2019 by Ben Gamari   8.8.2   5   Pnormal Trac import Windows bug
    • CLOSED
    • 2
    • 16
    updated Nov 08, 2019
  • T16190 fails on Windows
    #16389 · opened Mar 04, 2019 by Ben Gamari   8.10.1   10   NCG backend Phighest Trac import Windows broken test bug compiler crash
    • CLOSED
    • 6
    updated Jul 07, 2019
  • "Quantified type's kind mentions quantified type variable" error with fancy-kinded GADT
    #16391 · opened Mar 05, 2019 by Ryan Scott   8.10.1   5   Pnormal Trac import TypeInType bug typechecker
    • CLOSED
    • 4
    updated Jul 27, 2020
  • In ghci, revertCAFs should be executed in the external interpreter when necessary
    #16392 · opened Mar 05, 2019 by Trịnh Tuấn Phương   5   GHCi Pnormal Trac import bug newcomer remote GHCi
    • CLOSED
    • 4
    updated Nov 22, 2020
  • Implement the "Explicit specificity in type variable binders" proposal
    #16393 · opened Mar 05, 2019 by Alec Theriault   9.0.1   5   Pnormal Trac import task
    • CLOSED
    • 22
    updated Oct 18, 2020
  • GHC internal error while typechecking of instance definition
    #16394 · opened Mar 05, 2019 by Day1721   8.8.1   3   Plow Trac import bug error messages typechecker
    • CLOSED
    • 3
    updated Jul 07, 2019
  • --no-colour doesn't seem to do anything.
    #16397 · opened Mar 06, 2019 by Oleg Grenrus   8.10.1   5   Pnormal Trac import bug hadrian
    • CLOSED
    • 2
    • 5
    updated Jul 16, 2019
  • Missing documentation in Windows bindist tarball
    #16398 · opened Mar 06, 2019 by Ben Gamari   8.8.1   10   Phighest Trac import Windows bug documentation packaging
    • CLOSED
    • 1
    • 7
    updated Sep 12, 2019
  • Bad error message if we use TypeApplications with an identifier that doesn't exist
    #16401 · opened Mar 07, 2019 by Mateusz Kowalczyk   5   Pnormal Trac import bug
    • CLOSED
    • 1
    updated Jul 07, 2019
  • GHC doesnt' notice that `narrowWordFOO (x .&. (2^FOO-1))` is just `narrowWordFOO x`.
    #16402 · opened Mar 07, 2019 by Mateusz Kowalczyk   5   Pnormal Trac import feature request runtime perf
    • CLOSED
    • 1
    • 2
    updated Jan 10, 2021
  • Array code works with GHC 8.4.4, hangs with GHC 8.6.4
    #16406 · opened Mar 07, 2019 by Ghost User   8.6.5   5   Pnormal Trac import bug upstream
    • CLOSED
    • 11
    updated Jul 07, 2019
  • Non-versioned haddock.exe is not part of the Windows bindist tarball
    #16407 · opened Mar 08, 2019 by Moritz Kiefer   8.6.5   7   Phigh Trac import Windows bug packaging
    • CLOSED
    • 7
    updated Jul 07, 2019
  • incomplete ghc-8.6.4 windows binary tarball
    #16408 · opened Mar 08, 2019 by Bruno Damour   8.6.5   10   Phighest Trac import bug
    • CLOSED
    • 1
    • 3
    updated Jul 07, 2019
  • Order of declarations matters
    #16410 · opened Mar 08, 2019 by Icelandjack   5   Pnormal Trac import bug
    • CLOSED
    • 4
    updated Jul 07, 2019
  • Inconsistent -Wpartial-fields warnings with (~) vs. (~~)
    #16411 · opened Mar 09, 2019 by Ryan Scott   8.10.1   5   Pnormal Trac import bug error messages
    • CLOSED
    • 3
    • 0
    updated Jul 07, 2019
  • Type family signatures in indefinite modules
    #16412 · opened Mar 09, 2019 by Andrew Martin   5   Pnormal Trac import backpack feature request
    • CLOSED
    • 2
    updated Jul 07, 2019
  • GHC bindist with DWARF support seems much slower than non-DWARF
    #16413 · opened Mar 09, 2019 by jberryman   5   Pnormal Trac import bug debug information
    • CLOSED
    • 7
    updated Jul 07, 2019
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