Issues · Glasgow Haskell Compiler / GHC

New issue

crash when using template haskell and ghc-mod

#13574 · opened Apr 13, 2017 by quisquous 5 Pnormal Trac import bug
- CLOSED
- 6
updated Jul 07, 2019
GHC downloads do not work

#13575 · opened Apr 14, 2017 by Sergey Vinokurov 5 Pnormal Trac import bug
- CLOSED
- 4
updated Jul 07, 2019
Runtime crashes on arm64 (iOS)

#13576 · opened Apr 14, 2017 by jp.rider63 8.10.1 7 ARM Phigh Trac import bug macOS runtime crash
- CLOSED
- 10
updated Jan 23, 2020
Compiler performance on open-symbology parser module regressed in GHC 8.2

#13577 · opened Apr 14, 2017 by Ben Gamari 5 Pnormal Trac import bug
- 3
updated Jul 07, 2019
Incorrect Record Pattern Synonym example in users guide

#13578 · opened Apr 14, 2017 by cjholdbrooks 8.2.1 10 Phighest Trac import documentation task
- CLOSED
- 3
updated Jul 07, 2019
-fdefer-type-errors and -fdefer-typed-holes flag do not perform their roles

#13579 · opened Apr 15, 2017 by vanto 5 Pnormal Trac import bug error messages
- CLOSED
- 1
updated Jul 07, 2019
TypeApplications: panic from unknown function identifier

#13580 · opened Apr 15, 2017 by j6carey 5 GHCi Pnormal Trac import bug
- CLOSED
- 1
updated Jul 07, 2019
UNPACK should allow recursion that obviously terminates

#13581 · opened Apr 15, 2017 by ryanreich 5 Pnormal Trac import feature request
- 3
updated Jul 07, 2019
Confusing error message with multiparameter type classes.

#13582 · opened Apr 15, 2017 by Facundo Domínguez 5 MultiParamTypeClasses Pnormal Trac import bug error messages
- 4
updated Jul 07, 2019
configure.ac: handle AR=, NM= and other flags as arguments to ./configure

#13583 · opened Apr 17, 2017 by Sergei Trofimovich 8.4.1 5 Pnormal Trac import bug
- CLOSED
- 4
updated Jul 07, 2019
ghci parse error on operator info

#13584 · opened Apr 17, 2017 by akegalj 0 GHCi Plow Trac import bug incorrect runtime result
- 6
updated Jan 20, 2021
ala from Control.Lens.Wrapped panics

#13585 · opened Apr 18, 2017 by Fumiaki Kinoshita 8.2.1 10 Phighest Trac import TypeInType bug compiler crash typechecker
- CLOSED
- 14
updated Jul 07, 2019
ghc --make seems to leak memory

#13586 · opened Apr 18, 2017 by Mikolaj Konarski 5 Pnormal Trac import bug compiler perf
- 12
updated Jul 07, 2019
addTopDecls fails with typed Template Haskell

#13587 · opened Apr 18, 2017 by Trevor L. McDonell 5 Pnormal TemplateHaskell Trac import broken test bug typed TemplateHaskell
- 10
updated Jul 07, 2019
Simplify StgCase when all alternatives are the case binder

#13588 · opened Apr 18, 2017 by Joachim Breitner 3 Plow Trac import task
- CLOSED
- 3
updated Jul 07, 2019
Possible inconsistency in CSE's treatment of NOINLINE

#13589 · opened Apr 18, 2017 by Ben Gamari 5 CSE Pnormal Trac import bug
- 3
updated Jul 07, 2019
Update Cabal submodule to whatever the final Cabal 2.0 release is

#13590 · opened Apr 19, 2017 by Edward Z. Yang 8.2.1 10 Phighest Trac import bug
- CLOSED
- 4
updated Jul 07, 2019
"*** Exception: expectJust showModule" in ghci with hs-boot

#13591 · opened Apr 19, 2017 by lspitzner 8.2.1 7 GHCi Phigh Trac import broken test bug hs-boot
- CLOSED
- 7
updated Jul 07, 2019
Newtype type class with compiler generated instances

#13592 · opened Apr 19, 2017 by Icelandjack 5 Pnormal Trac import feature request
- 2
updated Jul 07, 2019
Unexpected behavior from Data.List.groupBy

#13593 · opened Apr 19, 2017 by dsf 5 Pnormal Trac import bug core libraries documentation incorrect runtime result task
- 17
updated Jul 07, 2019
Typechecker behavior w.r.t. BangPatterns and nested foralls has changed in 8.2

#13594 · opened Apr 20, 2017 by Ryan Scott 8.2.1 7 BangPatterns Phigh Trac import bug typechecker
- CLOSED
- 16
updated Jul 07, 2019
Should ‘coerce’ be levity polymorphic?

#13595 · opened Apr 20, 2017 by Icelandjack 8.10.1 5 Pnormal Trac import UnliftedNewtypes bug
- CLOSED
- 11
updated Jul 07, 2019
Try disabling inlining of DynFlags combinators

#13596 · opened Apr 20, 2017 by Ben Gamari 5 Pnormal Trac import task
- 4
updated Jul 07, 2019
ghc: panic! (the 'impossible' happened)

#13597 · opened Apr 20, 2017 by rzil 5 Pnormal Trac import bug compiler crash
- CLOSED
- 1
updated Jul 07, 2019
role annotation for newtype (partially?) ignored?

#13598 · opened Apr 20, 2017 by edsko@edsko.net 5 Pnormal Trac import bug
- CLOSED
- 7
updated Jul 07, 2019
Something is fishy in Windows hLock implementation

#13599 · opened Apr 20, 2017 by Ben Gamari 8.2.1 10 Phighest Trac import bug
- CLOSED
- 4
updated Jul 07, 2019
surprising error message with bang pattern

#13600 · opened Apr 21, 2017 by Andrew U. Frank 8.8.1 5 BangPatterns Pnormal Trac import bug error messages newcomer
- 15
updated Dec 18, 2020
GHC errors but hangs

#13601 · opened Apr 21, 2017 by Icelandjack 8.4.1 5 Pnormal Trac import bug
- CLOSED
- 8
updated Jul 07, 2019
Pattern syntax in expression context must be clarified

#13602 · opened Apr 22, 2017 by vanto 5 Pnormal Trac import error messages feature request
- CLOSED
- 4
updated Jul 07, 2019
Can't resolve levity polymorphic superclass

#13603 · opened Apr 22, 2017 by Icelandjack 8.2.1 5 Pnormal Trac import TypeInType bug levity polymorphism
- CLOSED
- 7
updated Jul 07, 2019
ghci no longer loads dynamic .o files by default if they were built with -O

#13604 · opened Apr 23, 2017 by george.colpitts 8.4.1 10 GHCi Phighest Trac import bug recompilation checking runtime perf
- CLOSED
- 48
updated Jul 07, 2019
GHC Bug when updating stack

#13605 · opened Apr 23, 2017 by pighcu 5 Pnormal Trac import bug
- CLOSED
- 1
updated Jul 07, 2019
GHCi segfaults on Windows with D3D code

#13606 · opened Apr 23, 2017 by Ryan Scott 8.4.1 5 GHCi Pnormal Trac import bug
- CLOSED
- 5
updated Jul 07, 2019
Panic when shared object file is missing: Dynamic linker not initialised

#13607 · opened Apr 23, 2017 by Ryan Scott 8.6.1 5 Pnormal Trac import bug compiler crash
- CLOSED
- 6
updated Sep 28, 2020
Expose the type of quasiquotes

#13608 · opened Apr 24, 2017 by Facundo Domínguez 8.4.1 5 Pnormal TemplateHaskell Trac import bug
- CLOSED
- 22
updated Jul 07, 2019
regression: `ANN` pragmas no longer ignored in TH-less GHC 8.2.1

#13609 · opened Apr 24, 2017 by Herbert Valerio Riedel 8.2.1 10 Phighest Trac import bug
- CLOSED
- 11
updated Jul 07, 2019
Unhelpful error messages about lifted and unlifted types

#13610 · opened Apr 24, 2017 by Joachim Breitner 8.4.1 3 Plow Trac import bug typechecker
- CLOSED
- 6
updated Jul 07, 2019
Segfault due to levity polymorphism of mkWeak#

#13611 · opened Apr 24, 2017 by Joachim Breitner 8.2.1 5 Pnormal Trac import broken test bug
- CLOSED
- 10
updated Jul 07, 2019
ghc.exe: panic! (the 'impossible' happened)

#13612 · opened Apr 24, 2017 by hmemcpy 5 Pnormal Trac import bug compiler crash
- CLOSED
- 2
updated Jul 07, 2019
Simplify fixIO

#13613 · opened Apr 24, 2017 by David Feuer 8.4.1 5 Pnormal Trac import core libraries task
- CLOSED
- 1
updated Jul 07, 2019
Rewrite rules not applied exhaustively when simplifying from plugin

#13614 · opened Apr 25, 2017 by Joachim Breitner 5 GHC API Pnormal Trac import bug
- CLOSED
- 10
updated Jul 07, 2019
Nondeterminism in ‘pure’ function w/ parallel evaluation & memo combinators

#13615 · opened Apr 25, 2017 by pacak 8.2.1 10 Phighest Trac import bug incorrect runtime result
- CLOSED
- 49
updated Jul 07, 2019
Old file used when later calls to GHC omit -dynamic-too

#13616 · opened Apr 26, 2017 by Joachim Breitner 5 Pnormal Trac import bug dynamic-too
- 0
updated Oct 13, 2020
GHCi linker does not honor alignment of sections.

#13617 · opened Apr 26, 2017 by Ryan Scott 8.8.1 5 GHCi Pnormal Trac import bug
- CLOSED
- 12
updated Jul 07, 2019
Reified data family instances type variables not related to value constructor fields

#13618 · opened Apr 26, 2017 by glguy 8.2.1 5 Pnormal Trac import bug incorrect runtime result typechecker
- CLOSED
- 2
updated Jul 07, 2019
hsc2hs parses incorrectly c99 style ("/// ...") comments in '--cross-compile' mode

#13619 · opened Apr 26, 2017 by Sergei Trofimovich 5 Pnormal Trac import bug external-hsc2hs
- 0
updated Jul 07, 2019
hsc2hs parses incorrectly '#ifdef' under '#{enum' in '--cross-compile' mode

#13620 · opened Apr 26, 2017 by Sergei Trofimovich 5 Pnormal Trac import bug external-hsc2hs
- 0
updated Jul 07, 2019
Problems with injective type families

#13621 · opened Apr 27, 2017 by Icelandjack 5 Pnormal Trac import bug injective type families
- 4
updated Jul 07, 2019
Regression: can't export constructor when conflicting, qualified constructor is also in scope

#13622 · opened Apr 27, 2017 by Ryan Scott 8.2.1 10 Phighest Trac import bug
- CLOSED
- 9
updated Jul 07, 2019
join points produce bad code for stream fusion

#13623 · opened Apr 27, 2017 by choenerzs 8.2.1 10 Phighest Trac import bug join points runtime perf
- CLOSED
- 12
updated Jul 07, 2019
loadObj() does not respect alignment

#13624 · opened Apr 28, 2017 by Trevor L. McDonell 8.10.2 7 Phigh RTS Trac import broken test bug linking newcomer
- 27
updated Feb 10, 2021
GHC internal error: ‘Y’ is not in scope during type checking, but it passed the renamer

#13625 · opened Apr 28, 2017 by Matthew Pickering 8.2.1 5 Pnormal Trac import TypeInType bug
- CLOSED
- 2
updated Jul 07, 2019
Ambiguity when exporting a data constructor despite qualification

#13626 · opened Apr 28, 2017 by Lemming 5 Pnormal Trac import bug parser
- CLOSED
- 5
updated Jul 07, 2019
IndexError: pop from empty list

#13627 · opened Apr 28, 2017 by Lemming 5 Pnormal Trac import bug infrastructure
- CLOSED
- 2
updated Jul 07, 2019
Confusing error message with TypeApplications already enabled

#13628 · opened Apr 28, 2017 by Niklas Hambüchen 5 Pnormal Trac import bug error messages
- CLOSED
- 1
updated Jul 07, 2019
sqrt should use machine instruction on x86_64

#13629 · opened Apr 28, 2017 by Ben Gamari 5 NCG backend Pnormal Trac import bug runtime perf
- 24
updated Jan 23, 2020
ByteString pinned memory can be leaky

#13630 · opened Apr 30, 2017 by Niklas Hambüchen 5 Pnormal RTS Trac import bug
- 4
updated Jan 05, 2021
In GHCi a result is wrong when -fdefer-typed-holes is used with underscore alone

#13631 · opened Apr 30, 2017 by vanto 5 Pnormal Trac import bug incorrect runtime result
- CLOSED
- 1
updated Jul 07, 2019
Frontend plugin arguments are reversed

#13632 · opened May 01, 2017 by Douglas Wilson 8.2.1 5 GHC API Pnormal Trac import bug
- CLOSED
- 4
updated Jul 07, 2019
testwsdeque failure on POWER8

#13633 · opened May 01, 2017 by Peter Trommler 5 CI breakage Pnormal RTS Trac import bug concurrency runtime crash
- CLOSED
- 2
- 9
updated Feb 07, 2020
num009 fails on POWER8

#13634 · opened May 01, 2017 by Peter Trommler 5 Pnormal Trac import broken test bug core libraries incorrect runtime result
- 0
updated Jul 07, 2019
Incorrect result at runtime with list comprehensions in that case

#13635 · opened May 01, 2017 by vanto 5 Pnormal Trac import bug incorrect runtime result
- CLOSED
- 5
updated Jul 07, 2019
Enable -Wcpp-undef

#13636 · opened May 01, 2017 by Ben Gamari 8.4.1 5 Pnormal Trac import task
- CLOSED
- 2
updated Jul 07, 2019
Printing type operators adds extraneous parenthesis

#13637 · opened May 02, 2017 by darchon 5 Pnormal Trac import bug
- 3
updated Jul 07, 2019
configure error: GHC is required.

#13638 · opened May 02, 2017 by QuRyu 5 Pnormal Trac import bug ghc build failure
- CLOSED
- 3
updated Jul 07, 2019
Skylighting package compilation is glacial

#13639 · opened May 02, 2017 by Ben Gamari 8.6.1 5 Pnormal Trac import bug compiler perf
- CLOSED
- 11
updated Jul 07, 2019
Core lint error with deferred type holes

#13640 · opened May 02, 2017 by Icelandjack 5 Pnormal Trac import bug
- CLOSED
- 8
updated Jul 07, 2019
Compile error while performing stack upgrade

#13641 · opened May 03, 2017 by pisomojado 5 Pnormal Trac import bug compiler crash
- CLOSED
- 1
updated Jul 07, 2019
GHCi 8.2 simply ignores TH splice using datatype with a forall'd kind signature

#13642 · opened May 03, 2017 by Ryan Scott 8.2.1 5 Pnormal TemplateHaskell Trac import bug
- CLOSED
- 6
updated Jul 07, 2019
Core lint error with TypeInType and TypeFamilyDependencies

#13643 · opened May 04, 2017 by Icelandjack 5 Pnormal Trac import TypeInType bug injective type families
- CLOSED
- 6
updated Jul 07, 2019
overloaded name used in record pattern matching leads to panic! (the 'impossible' happened) in ghc

#13644 · opened May 04, 2017 by pjljvdlaar 8.4.1 5 Pnormal Trac import bug compiler crash
- CLOSED
- 19
updated Jul 07, 2019
whoCreated produces an uninformative stack trace when an exception is raised in a CAF

#13645 · opened May 04, 2017 by refold 5 Pnormal Trac import bug
- 1
- 0
updated Jul 07, 2019
strict patterns with no bindings (e.g. `let !() = ...`) trigger -Wunused-pattern-binds

#13646 · opened May 04, 2017 by exphp 5 Pnormal Trac import bug
- CLOSED
- 4
updated Jul 07, 2019
Tidy up TcTypeable

#13647 · opened May 05, 2017 by Simon Peyton Jones 5 Pnormal Trac import Typeable task
- 4
updated Jan 23, 2020
ApplicativeDo selects "GHC.Base.Monad.return" when actions are used without patterns.

#13648 · opened May 05, 2017 by AaronFriel 5 ApplicativeDo Pnormal Trac import bug
- CLOSED
- 4
updated Jul 07, 2019
RebindableSyntax causes type errors when 'fail' is not defined, even if not used.

#13649 · opened May 05, 2017 by AaronFriel 8.2.1 5 Pnormal RebindableSyntax Trac import bug
- CLOSED
- 6
updated Jul 07, 2019
Implement KPush in types

#13650 · opened May 05, 2017 by Richard Eisenberg 8.6.1 7 Phigh Trac import TypeInType task
- 3
updated Jul 07, 2019
Invalid redundant pattern matches with -XTypeFamilyDependencies

#13651 · opened May 05, 2017 by Eric Crockett 8.2.1 5 Pnormal Trac import bug error messages injective type families
- CLOSED
- 6
updated Jul 07, 2019
Add integer division to GHC.TypeLits

#13652 · opened May 05, 2017 by Alexey Vagarenko 5 Pnormal Trac import feature request
- CLOSED
- 7
updated Jul 07, 2019
Re-allocate byteArray lead internal error: evacuate: strange closure type 241

#13653 · opened May 06, 2017 by winter 7 Phigh Trac import bug
- CLOSED
- 2
updated Jul 07, 2019
Optimize casMutVar# for single-threaded runtime

#13654 · opened May 06, 2017 by David Feuer 8.4.1 5 Pnormal RTS Trac import feature request runtime perf
- CLOSED
- 4
updated Jul 07, 2019
Spurious untouchable type variable in connection with rank-2 type and constraint family

#13655 · opened May 06, 2017 by Wolfgang Jeltsch 5 Pnormal Trac import bug typechecker
- 13
updated Feb 15, 2021
Consider implementing atomicModifyMutVar# in Haskell

#13656 · opened May 06, 2017 by David Feuer 8.4.1 3 Plow RTS Trac import task
- CLOSED
- 1
updated Jul 07, 2019
Documentation: Functional dependencies by other means

#13657 · opened May 07, 2017 by AntC 5 Pnormal Trac import bug documentation
- 5
updated Jul 07, 2019
Assertion failure on HEAD: "optCoercion changed types!"

#13658 · opened May 07, 2017 by Ben Gamari 8.2.1 7 Phigh Trac import bug
- CLOSED
- 9
updated Jul 07, 2019
Bug report: "AThing evaluated unexpectedly tcTyVar a_alF"

#13659 · opened May 07, 2017 by costaparas 10 Phighest Trac import bug compiler perf
- CLOSED
- 4
updated Jul 07, 2019
Tail after and including `NUL` character in `FilePath`s silently truncated

#13660 · opened May 07, 2017 by Herbert Valerio Riedel 5 Pnormal Trac import bug core libraries
- 0
updated Jul 07, 2019
User manual warnings

#13661 · opened May 08, 2017 by Simon Peyton Jones 8.4.1 5 Pnormal Trac import bug
- CLOSED
- 2
updated Jul 07, 2019
Type inference fails in connection with TypeFamilies, 'let', type equalities ...

#13662 · opened May 08, 2017 by Lemming 8.2.1 5 Pnormal Trac import bug typechecker
- CLOSED
- 4
updated Jul 07, 2019
Option to disable turning recursive let-bindings to recursive functions

#13663 · opened May 08, 2017 by darchon 5 Pnormal Trac import feature request
- 4
updated Jul 07, 2019
Ill formatted warning about tabulators

#13664 · opened May 08, 2017 by Lemming 8.2.1 5 Pnormal Trac import bug
- CLOSED
- 3
updated Jul 07, 2019
Broken Link in GHC Docs for Custom compile-time errors

#13665 · opened May 08, 2017 by atwupack 8.2.1 3 Plow Trac import bug documentation
- CLOSED
- 1
updated Jul 07, 2019
The gcc wrapper can't handle trailing backslashes

#13666 · opened May 08, 2017 by niklasl 3 Plow Trac import bug driver
- CLOSED
- 13
updated Jul 07, 2019
Error while running stack upgrade

#13667 · opened May 08, 2017 by diego.saa 8.0.2 5 Pnormal Trac import bug
- CLOSED
- 1
updated Jul 07, 2019
Space leak re-introduced

#13668 · opened May 09, 2017 by Simon Peyton Jones 5 Pnormal Trac import bug
- CLOSED
- 6
updated Jun 11, 2020
Identifier "Otherwise" in guarded equation can crash a program

#13669 · opened May 09, 2017 by vanto 5 Pnormal Trac import feature request
- CLOSED
- 8
updated Jul 07, 2019
Improving Type Error Messages

#13670 · opened May 09, 2017 by Eric Seidel 5 Pnormal Trac import bug error messages
- 3
updated Jul 07, 2019
Core lint error with PatternSynonyms and undefined

#13671 · opened May 09, 2017 by Icelandjack 5 Pnormal PatternSynonyms Trac import bug
- CLOSED
- 2
updated Jul 07, 2019
Pattern match on LHS of pattern synonym declaration

#13672 · opened May 09, 2017 by Icelandjack 5 Pnormal PatternSynonyms Trac import feature request
- CLOSED
- 1
updated Jul 07, 2019
Core lint error with defer-typed-holes

#13673 · opened May 09, 2017 by Icelandjack 5 Pnormal Trac import bug
- CLOSED
- 3
updated Jul 07, 2019