Issues · Glasgow Haskell Compiler / GHC

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Existentials in newtypes

#15590 · opened Aug 31, 2018 by NioBium 8.6.1 5 Pnormal Trac import feature request
- CLOSED
- 1
updated Jul 07, 2019
Inconsistent kind variable binder visibility between associated and non-associated type families

#15591 · opened Sep 01, 2018 by Ryan Scott 8.8.1 5 Pnormal Trac import TypeApplications TypeFamilies bug
- CLOSED
- 12
updated Jul 07, 2019
Type families without CUSKs cannot be given visible kind variable binders

#15592 · opened Sep 01, 2018 by Ryan Scott 8.8.1 5 CUSKs Pnormal Trac import TypeApplications TypeFamilies bug
- CLOSED
- 21
updated Jul 07, 2019
QuantifiedConstraints: trouble with type family

#15593 · opened Sep 02, 2018 by Icelandjack 8.6.1 5 ConstraintKinds Pnormal QuantifiedConstraints Trac import bug
- CLOSED
- 4
updated Jul 07, 2019
--abi-hash with Backpack incorrectly loads modules from dependent packages

#15594 · opened Sep 02, 2018 by Edward Z. Yang 8.6.1 5 Pnormal Trac import backpack bug
- CLOSED
- 1
- 4
updated Sep 28, 2020
GHC shouting: panic!

#15597 · opened Sep 03, 2018 by tstr 5 Pnormal Trac import TypeInType bug compiler crash
- CLOSED
- 1
updated Jul 07, 2019
Bug while writing a simple parser with Parsec

#15600 · opened Sep 03, 2018 by roehst 8.6.1 5 Pnormal Trac import bug
- CLOSED
- 1
updated Jul 07, 2019
Unexpected compile error on type level lists with a single element

#15601 · opened Sep 03, 2018 by erikd 8.6.1 5 Pnormal Trac import bug error messages
- CLOSED
- 2
updated Jul 07, 2019
Profiling RTS flag `-po` does not work

#15604 · opened Sep 05, 2018 by Ömer Sinan Ağacan 8.6.1 5 Pnormal Trac import bug profiling
- CLOSED
- 3
updated Jul 07, 2019
RebindableSyntax warns `return` is not in scope when trying to call `pure`, but does not desugar between the two

#15607 · opened Sep 05, 2018 by isovector 8.6.1 5 Pnormal RebindableSyntax Trac import bug
- CLOSED
- 2
updated Jul 07, 2019
Segfault in retainer profiling

#15608 · opened Sep 06, 2018 by Ömer Sinan Ağacan 8.6.3 5 Pnormal Trac import bug profiling
- CLOSED
- 9
updated Jul 07, 2019
No skolem info panic: Static pointers and holes

#15609 · opened Sep 06, 2018 by Matthew Pickering 8.6.1 5 Pnormal Trac import bug
- CLOSED
- 2
updated Jul 07, 2019
GHCi command to list instances a (possibly compound) type belongs to

#15610 · opened Sep 06, 2018 by Icelandjack 8.10.1 0 Plow Trac import feature request ghc proposal
- CLOSED
- 7
updated Jul 07, 2019
scope errors lie about what modules are imported

#15611 · opened Sep 06, 2018 by dmwit 8.8.1 5 Pnormal Trac import bug
- CLOSED
- 7
updated Feb 09, 2021
Got Unable to commit 16777216 bytes of memory error on Ubuntu

#15612 · opened Sep 06, 2018 by figelwump 8.6.1 5 Pnormal Trac import bug
- CLOSED
- 1
updated Aug 08, 2019
Rename some mutable closure types for consistency

#15615 · opened Sep 07, 2018 by Andreas Klebinger 8.6.1 5 Pnormal RTS Trac import task
- CLOSED
- 1
updated Jul 07, 2019
Bug when using TimerManager/GHC.Event ?

#15616 · opened Sep 07, 2018 by ddellacosta 8.6.1 5 Pnormal Trac import bug
- CLOSED
- 2
- 4
updated Sep 01, 2020
Unboxed tuples/sum error message on `a = show 5` in expression evaluation and interactive modes

#15617 · opened Sep 08, 2018 by ChaiTRex 8.6.1 5 Pnormal Trac import bug error messages
- CLOSED
- 20
updated Sep 01, 2020
Unused binding warning should not apply to newtype constructors

#15618 · opened Sep 08, 2018 by David Feuer 8.6.1 5 Pnormal Trac import bug error messages
- CLOSED
- 1
updated Jul 07, 2019
Generalize `E{0,1,2,3,6,9,12}` from `Data.Fixed`

#15622 · opened Sep 09, 2018 by Alexandre R. Baldé 8.6.1 5 Pnormal Trac import core libraries feature request
- CLOSED
- 45
updated Jul 13, 2019
Wrong Endian, ghc-pwd and ghc-cabal on ghc 8.0.1 for powerpc64le (IBM Power)

#15623 · opened Sep 10, 2018 by francescantoncastro 8.6.1 10 Phighest Trac import bug ghc build failure
- CLOSED
- 3
updated Jul 07, 2019
defer-type-errors and equality constraints

#15624 · opened Sep 10, 2018 by Krzysztof Gogolewski 8.8.1 3 Plow Trac import bug typechecker
- CLOSED
- 1
updated Jul 07, 2019
GHC panic, with QuantifiedConstraints

#15625 · opened Sep 10, 2018 by Icelandjack 5 Pnormal QuantifiedConstraints Trac import bug
- CLOSED
- 6
updated Jul 07, 2019
Absent unlifted bindings

#15627 · opened Sep 11, 2018 by Sebastian Graf ⊥ 5 Pnormal Trac import task
- CLOSED
- 13
updated Nov 30, 2020
Higher-rank kinds

#15628 · opened Sep 11, 2018 by Icelandjack 8.6.1 5 ImpredicativeTypes Pnormal Trac import bug
- CLOSED
- 4
updated Jul 07, 2019
"No skolem info" panic (GHC 8.6 only)

#15629 · opened Sep 11, 2018 by Ryan Scott 8.8.1 5 Pnormal Trac import TypeInType bug compiler crash typechecker
- CLOSED
- 9
updated Jul 07, 2019
panic! Simplifier ticks exhausted

#15630 · opened Sep 11, 2018 by micahshahn 8.6.1 5 Pnormal Trac import bug
- CLOSED
- 6
updated Jul 12, 2020
Lost opportunity to eliminate seq

#15631 · opened Sep 12, 2018 by Simon Peyton Jones 8.6.1 5 Pnormal Trac import bug
- CLOSED
- 2
updated Jul 07, 2019
Type-checker plugins aren't loaded in GHCi 8.6.1

#15633 · opened Sep 12, 2018 by Oleg Grenrus 8.6.3 5 Pnormal Trac import bug plugins typechecker plugins
- CLOSED
- 6
updated Jul 07, 2019
Implication introduction for quantified constraints

#15635 · opened Sep 12, 2018 by David Feuer 8.6.1 5 Pnormal QuantifiedConstraints Trac import feature request
- CLOSED
- 3
updated Jul 07, 2019
Implication constraint priority breaks default class implementations

#15636 · opened Sep 13, 2018 by i-am-tom 8.6.1 5 Pnormal QuantifiedConstraints Trac import bug
- CLOSED
- 3
updated Jul 07, 2019
Ambiguous type variables in GeneralisedNewtypeDeriving

#15637 · opened Sep 13, 2018 by i-am-tom 8.8.1 5 Pnormal Trac import bug deriving
- CLOSED
- 4
updated Jul 07, 2019
Make Ptr argument to hGetBuf and hGetBufSome strict

#15638 · opened Sep 13, 2018 by Andrew Martin 8.8.1 5 Pnormal Trac import task
- CLOSED
- 2
updated Jul 07, 2019
Git repositories have several problems

#15641 · opened Sep 14, 2018 by Philippe 7 Phigh Trac import bug infrastructure
- CLOSED
- 4
updated Jul 07, 2019
Test Suite Unexpected failure for ghci063(ghci)

#15643 · opened Sep 14, 2018 by Julian Leviston 5 Pnormal Trac import bug testsuite
- CLOSED
- 3
updated Jan 23, 2021
TypeChecking of Monad patterns incorrect with RebindableSyntax and OverloadedStrings

#15645 · opened Sep 14, 2018 by Neil Mitchell 8.8.1 5 Pnormal Trac import bug ghc proposal
- CLOSED
- 11
updated Jul 07, 2019
ghc: panic! (the 'impossible' happened)

#15647 · opened Sep 14, 2018 by monomon 8.6.1 5 Pnormal Trac import bug compiler crash
- CLOSED
- 2
updated Jul 07, 2019
Core Lint error with source-level unboxed equality

#15648 · opened Sep 15, 2018 by Ryan Scott 8.8.1 5 Pnormal Trac import bug compiler crash
- CLOSED
- 14
updated Jul 07, 2019
Errors about ambiguous untouchable variable when using constraint variable in RankN type

#15649 · opened Sep 16, 2018 by infinity0 8.6.1 5 Pnormal Trac import bug
- CLOSED
- 3
updated Jul 07, 2019
Both `Ptr a` in SerializedCompact are inaccurate because of the `a`

#15653 · opened Sep 18, 2018 by chessai 9.0.1 5 API annotations Pnormal Trac import bug compact normal forms
- CLOSED
- 3
updated Jul 23, 2020
Use deriving Functor in the codebase

#15654 · opened Sep 18, 2018 by Krzysztof Gogolewski 8.10.1 5 Pnormal Trac import task
- CLOSED
- 2
updated Jul 07, 2019
Extend -Wall with incomplete-uni-patterns and incomplete-record-updates

#15656 · opened Sep 18, 2018 by Chaitanya Koparkar 9.2.1 5 Pnormal Trac import feature request ghc proposal
- CLOSED
- 1
- 2
- 38
updated Feb 10, 2021
strange inferred kind with TypeInType

#15658 · opened Sep 19, 2018 by dmwit 8.10.1 5 Pnormal Trac import bug ghc proposal visible dependent quantification
- CLOSED
- 7
updated Jul 07, 2019
Wacky error message when RULE mentions out-of-scope variable

#15659 · opened Sep 19, 2018 by Ryan Scott 8.8.1 5 Pnormal Trac import bug error messages newcomer
- CLOSED
- 1
updated Jul 07, 2019
Line pragmas appear to be slightly broken with Clang's CPP

#15662 · opened Sep 21, 2018 by Ben Gamari 8.10.1 5 Pnormal Trac import bug
- CLOSED
- 3
updated May 06, 2020
Core Lint error

#15664 · opened Sep 21, 2018 by Icelandjack 8.6.1 5 Pnormal Trac import TypeInType bug
- CLOSED
- 6
updated Jul 07, 2019
Dependent type synonym in recursive type family causes GHC to panic

#15666 · opened Sep 22, 2018 by tydeu 8.6.1 5 Pnormal Trac import bug compiler crash newcomer
- CLOSED
- 8
updated Jul 07, 2019
Readonly permissions bits are wrong

#15667 · opened Sep 23, 2018 by Tamar Christina 8.6.2 7 Phigh Trac import bug
- CLOSED
- 2
updated Jul 07, 2019
T7040_ghci has a suspicious testcase failure

#15669 · opened Sep 23, 2018 by Tamar Christina 8.8.1 7 Phigh Trac import bug
- CLOSED
- 3
updated Jul 07, 2019
Link errors due to forcibly exporting findPtr

#15671 · opened Sep 23, 2018 by Tamar Christina 8.8.1 5 Pnormal Trac import bug
- CLOSED
- 7
updated Jul 07, 2019
heap overflow with Bits.shift and Integer

#15673 · opened Sep 24, 2018 by mcmayer 8.8.1 5 Pnormal Trac import bug
- CLOSED
- 8
updated Jul 07, 2019
Type operators in existential context cannot be parsed

#15675 · opened Sep 25, 2018 by Vladislav Zavialov 8.8.1 5 Pnormal Trac import bug parser
- CLOSED
- 3
updated Jul 07, 2019
Use String rather than [Char] where possible

#15679 · opened Sep 26, 2018 by Simon Peyton Jones 8.6.1 5 Pnormal Trac import bug
- CLOSED
- 3
- 0
updated Jun 05, 2020
Pattern signature not inferred

#15685 · opened Sep 28, 2018 by Icelandjack 8.6.2 5 Pnormal PatternSynonyms Trac import bug
- CLOSED
- 5
updated Jul 07, 2019
Different results depending on if the code was compiled with or without optimizations

#15686 · opened Sep 28, 2018 by Darwin226 8.4.1 5 Pnormal Trac import bug incorrect runtime result
- CLOSED
- 1
updated Jul 07, 2019
Marking Pred(S n) = n as injective

#15691 · opened Sep 30, 2018 by Icelandjack 8.6.1 5 Pnormal Trac import TypeFamilies bug injective type families typechecker
- CLOSED
- 2
updated Jul 07, 2019
GHC panic from pattern synonyms + deferred type errors

#15692 · opened Sep 30, 2018 by Icelandjack 8.6.2 5 Pnormal PatternSynonyms Trac import TypeInType bug compiler crash
- CLOSED
- 6
updated Jul 07, 2019
GHC panic from pattern synonym, "Type-correct unfilled coercion hole"

#15694 · opened Sep 30, 2018 by Icelandjack 8.6.1 5 Pnormal PatternSynonyms Trac import bug
- CLOSED
- 3
updated Jul 07, 2019
Core Lint error, from -fobject-code + defer type errors + pattern synonyms + other stuff

#15695 · opened Sep 30, 2018 by Icelandjack 8.6.2 5 Pnormal Trac import bug compiler crash
- CLOSED
- 4
updated Jul 07, 2019
Derived Ord instance for enumerations with more than 8 elements seems to be incorrect

#15696 · opened Oct 02, 2018 by mrkkrp 8.6.2 10 Phighest Trac import bug incorrect runtime result
- CLOSED
- 88
updated Jul 18, 2019
Plugins cause GHC to panic: cannot find dynamic libraries

#15700 · opened Oct 02, 2018 by sheaf 8.6.2 5 Pnormal Trac import bug compiler crash
- CLOSED
- 14
updated Jul 07, 2019
HEAD: Build failure in ghc-prim

#15701 · opened Oct 03, 2018 by Peter Trommler 8.8.1 5 Pnormal Trac import bug ghc build failure
- CLOSED
- 2
updated Jul 07, 2019
"-main-is" flag is broken for recent ghc-head

#15702 · opened Oct 03, 2018 by Cheng Shao 8.8.1 5 Pnormal Trac import bug error messages
- CLOSED
- 6
updated Jul 07, 2019
Different saturations of the same polymorphic-kinded type constructor aren't seen as apart types

#15704 · opened Oct 04, 2018 by mniip 8.6.1 5 Pnormal Trac import TypeFamilies bug typechecker
- CLOSED
- 8
updated Jul 07, 2019
Refactor NewHsTypeX to DerivedCoreTy

#15706 · opened Oct 05, 2018 by Vladislav Zavialov 9.0.1 3 Plow Trac import task
- CLOSED
- 2
- 5
updated Dec 19, 2020
GHC panic using TypeInType with minimal source code

#15709 · opened Oct 05, 2018 by jnape 5 Pnormal Trac import TypeInType bug compiler crash
- CLOSED
- 2
updated Jul 07, 2019
Kind inference of class variables does not examine associated types

#15711 · opened Oct 05, 2018 by Richard Eisenberg 5 Pnormal Trac import TypeInType bug
- CLOSED
- 2
updated Jul 07, 2019
GHC panic with -XDerivingVia

#15712 · opened Oct 05, 2018 by Icelandjack 5 DerivingVia Pnormal Trac import bug
- CLOSED
- 4
updated Feb 09, 2020
Bogus -Woverlapping-patterns warning with OverloadedStrings

#15713 · opened Oct 06, 2018 by quasicomputational 5 Pnormal Trac import bug pattern match warnings
- CLOSED
- 2
- 0
updated Jul 07, 2019
Compacting StaticPtr of a function doesn't work

#15714 · opened Oct 06, 2018 by Ömer Sinan Ağacan 5 Pnormal Trac import bug
- CLOSED
- 4
updated Jul 07, 2019
problematic openFile with named pipes

#15715 · opened Oct 07, 2018 by adp 8.6.3 5 API annotations Pnormal Trac import bug core libraries incorrect runtime result
- CLOSED
- 5
updated Jul 07, 2019
GHC hangs on default implementation of type family

#15716 · opened Oct 07, 2018 by Heimdell 8.4.1 7 Phigh Trac import bug compiler crash
- CLOSED
- 3
updated Jul 07, 2019
Build panic on ghc-8.6.1 under FreeBSD when using -fllvm

#15718 · opened Oct 08, 2018 by gwright@antiope.com 8.8.1 7 Phigh Trac import bug compiler crash
- CLOSED
- 8
updated Jul 07, 2019
Command `:show bindings` throws exception for bindings without `let`

#15721 · opened Oct 08, 2018 by Tao He 8.8.1 7 GHCi Phigh Trac import bug newcomer
- CLOSED
- 5
updated Jul 07, 2019
Add -Wstar-is-type to the User's Guide

#15722 · opened Oct 08, 2018 by Vladislav Zavialov 8.6.2 5 Pnormal Trac import documentation task
- CLOSED
- 1
updated Jul 07, 2019
-prof -fPIC -fexternal-dynamic-refs generates non-PIC relocations for external symbol

#15723 · opened Oct 08, 2018 by Zejun Wu 8.10.1 5 Pnormal Trac import bug code generation
- CLOSED
- 5
updated Jul 07, 2019
GHC panic with malformed pragma

#15724 · opened Oct 08, 2018 by etorreborre 5 Pnormal Trac import bug
- CLOSED
- 2
updated Jul 07, 2019
Core Lint error: Trans coercion mis-match

#15725 · opened Oct 09, 2018 by Ryan Scott 8.8.1 5 Pnormal Trac import bug compiler crash
- CLOSED
- 9
updated Jul 07, 2019
Program with safe array operations triggers debug runtime assertion

#15728 · opened Oct 09, 2018 by Ömer Sinan Ağacan 10 Phighest RTS Trac import bug
- CLOSED
- 7
updated Jul 07, 2019
Static GHCi can segfault when accessing .bss section in C

#15729 · opened Oct 09, 2018 by Zejun Wu 8.10.1 5 GHCi Pnormal Trac import bug
- CLOSED
- 6
updated Jul 07, 2019
SCC/HPC/CORE annotation can change the meaning of an expression

#15730 · opened Oct 09, 2018 by Vladislav Zavialov 7 Phigh Trac import bug incorrect runtime result parser
- CLOSED
- 1
- 7
updated Jan 02, 2020
Several links in GHC.Exts.Heap documentation are broken

#15733 · opened Oct 10, 2018 by Matthew Pickering 8.8.1 5 Pnormal Trac import newcomer task
- CLOSED
- 4
updated Jul 07, 2019
Testsuite failures from validate --slow

#15736 · opened Oct 10, 2018 by jrp2014 10 Phighest Trac import bug incorrect runtime result testsuite
- CLOSED
- 26
updated May 31, 2020
-ddump-splices omits required parentheses around quantified constraints

#15738 · opened Oct 11, 2018 by Ryan Scott 8.8.1 5 Pnormal TemplateHaskell Trac import bug
- CLOSED
- 2
updated Jul 07, 2019
Type family with higher-rank result is too accepting

#15740 · opened Oct 11, 2018 by Richard Eisenberg 8.8.1 10 Phighest Trac import TypeFamilies TypeInType bug
- CLOSED
- 7
updated Jul 07, 2019
GHC configure step can fail when CC=clang

#15742 · opened Oct 12, 2018 by judah 8.8.2 5 Phighest Trac import bug
- CLOSED
- 5
- 1
- 3
updated Jan 07, 2020
Nail down the Required/Inferred/Specified story

#15743 · opened Oct 12, 2018 by Simon Peyton Jones 5 Pnormal Trac import bug
- CLOSED
- 14
updated Jul 07, 2019
GHC panics when builds for arm as: ghc-stage1: panic! (the 'impossible' happened): padLiveArgs -- i > regNum ??

#15747 · opened Oct 14, 2018 by Sergei Trofimovich 5 LLVM backend Pnormal Trac import bug
- CLOSED
- 1
updated Jul 07, 2019
panic

#15748 · opened Oct 14, 2018 by awf 5 Pnormal Trac import bug
- CLOSED
- 6
updated Jul 07, 2019
Long Harbormaster builds

#15749 · opened Oct 14, 2018 by Krzysztof Gogolewski 5 Pnormal Trac import bug infrastructure
- CLOSED
- 2
updated Jul 07, 2019
Investigate haddock.base perf test

#15750 · opened Oct 14, 2018 by Richard Eisenberg 5 Pnormal Trac import task testsuite
- CLOSED
- 1
updated Jul 07, 2019
Inconsistent pattern-match warnings when using guards versus case expressions

#15753 · opened Oct 16, 2018 by Ryan Scott 8.10.1 5 Pnormal Trac import bug error messages pattern match warnings
- CLOSED
- 3
- 19
updated Sep 18, 2019
Move free variable computation to after STG passes

#15754 · opened Oct 16, 2018 by Ben Gamari 8.8.1 5 Pnormal Trac import bug
- CLOSED
- 14
updated Jul 07, 2019
randomRIO panic on (GHC version 8.4.3 for x86_64-apple-darwin)

#15755 · opened Oct 17, 2018 by cmal 5 Pnormal Trac import bug
- CLOSED
- 3
updated Jul 07, 2019
Coercion Variable Almost Devoid Checking in ForAllCo

#15757 · opened Oct 17, 2018 by Ningning Xie 5 Pnormal Trac import task
- CLOSED
- 3
updated Jul 07, 2019
hsc2hs broken due to incorrect argument passing to the hsc2hs executable

#15758 · opened Oct 17, 2018 by Ömer Sinan Ağacan 5 Pnormal Trac import bug
- CLOSED
- 8
updated Jul 07, 2019
pprFamInstLHS drops parentheses

#15761 · opened Oct 17, 2018 by Richard Eisenberg 8.6.2 5 Pnormal Trac import bug
- CLOSED
- 1
- 3
updated Jul 07, 2019
GHC panic from PolyKinds + DataKinds

#15764 · opened Oct 17, 2018 by Icelandjack 5 Pnormal Trac import bug
- CLOSED
- 1
updated Jul 07, 2019
Make the "extract" functions in RnTypes pure

#15765 · opened Oct 17, 2018 by Richard Eisenberg 5 Pnormal Trac import task
- CLOSED
- 2
updated Jul 07, 2019
GeneralizedNewtypeDeriving should support classes with ambiguous types

#15766 · opened Oct 17, 2018 by reinerp 5 Pnormal Trac import bug
- CLOSED
- 1
updated Jul 07, 2019