Issues · Glasgow Haskell Compiler / GHC

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Broken symlinks in lndir build tree

#15257 · opened Jun 11, 2018 by Adam Gundry 5 Pnormal Trac import bug ghc build failure
- 6
updated Jan 23, 2020
Implement CMOV support.

#15258 · opened Jun 11, 2018 by Andreas Klebinger 5 Pnormal Trac import code generation task
- 3
updated Jan 23, 2020
Extend TVar/MVar to N capacity / Add primitive channel type

#15267 · opened Jun 13, 2018 by winter 9.2.1 7 Phigh RTS Trac import feature request
- 4
updated Jan 23, 2021
TH doesn't verify name types during conversion

#15270 · opened Jun 13, 2018 by Ben Gamari 5 Pnormal TemplateHaskell Trac import bug
- 9
updated Jan 23, 2020
Handle implied flags more intuitively

#15272 · opened Jun 14, 2018 by Tobias Dammers 5 Pnormal Trac import feature request
- 5
updated Jan 23, 2020
AArch64 validation fails with many invalid relocations

#15275 · opened Jun 15, 2018 by Ben Gamari 8.6.1 7 Phigh Trac import bug linking
- 21
updated Feb 15, 2021
Locale issue in the testsuite

#15283 · opened Jun 17, 2018 by Sylvain Henry 5 Pnormal Trac import task testsuite
- 4
updated Jul 21, 2020
T11627[ab] fail on some Darwin environments

#15287 · opened Jun 18, 2018 by Ben Gamari 8.6.1 7 Phigh Trac import bug
- 6
updated Jul 07, 2019
Incorrect SCC name parsing according to user manual

#15291 · opened Jun 19, 2018 by Ömer Sinan Ağacan 5 Pnormal Trac import bug
- 6
updated Jan 23, 2020
Haddock options should be concatenated

#15295 · opened Jun 20, 2018 by Simon Jakobi 5 Pnormal Trac import bug haddock
- 3
updated Jan 23, 2020
Add support for insert, extract and broadcast SIMD instructions for native X86 codegen

#15297 · opened Jun 21, 2018 by John Ky 5 Pnormal Trac import feature request
- 2
updated Jan 23, 2020
Support spliced function names in type signatures in TH declaration quotes

#15298 · opened Jun 21, 2018 by Nathan Collins 5 Pnormal Trac import feature request
- 6
updated Jan 23, 2020
Huge increase of compile time and memory use from 8.0.2 to 8.2.2 or 8.4.2

#15304 · opened Jun 23, 2018 by NathanWaivio 8.6.1 7 Phigh Trac import bug compiler perf inlining
- 27
updated Apr 07, 2020
mkLHsOpTy is discarding API Annotations

#15309 · opened Jun 24, 2018 by Alan Zimmerman 5 API annotations Pnormal Trac import bug
- 2
updated Jan 23, 2020
Derive Generic1 instances for types of kind (k -> *) -> * that include applications of the parameter

#15310 · opened Jun 25, 2018 by cedricshock 3 Plow Trac import feature request generics typechecker
- 3
updated Jul 07, 2019
getChanContents exception behavior seems a bit odd

#15312 · opened Jun 26, 2018 by David Feuer 5 Pnormal Trac import bug core libraries incorrect runtime result
- 4
updated Jan 23, 2020
Framework failures on windows with plugins

#15313 · opened Jun 26, 2018 by Simon Peyton Jones 5 Pnormal Trac import bug
- 6
updated Aug 07, 2020
Save the types in the typechecked syntax tree

#15320 · opened Jun 28, 2018 by nboldi 5 Pnormal Trac import feature request hie files
- 11
updated Aug 12, 2020
`KnownNat` does not imply `Typeable` any more when used with plugin

#15322 · opened Jun 29, 2018 by Dmitrii Kovanikov 5 Pnormal Trac import Typeable bug typechecker plugins
- 19
updated Jan 23, 2020
Add option to disable error message expression context (the 'In the expression' things)

#15326 · opened Jun 30, 2018 by dramforever 5 Pnormal Trac import feature request newcomer
- 1
- 7
updated Apr 29, 2020
Optimize remainders by powers of two for Integer and Natural

#15327 · opened Jun 30, 2018 by Bodigrim 5 Pnormal Trac import core libraries feature request
- 3
updated Jan 23, 2020
cpphs: internal error: evacuate(static): strange closure type 8440

#15328 · opened Jun 30, 2018 by cnmne 5 Pnormal Trac import bug ghc build failure package system
- 8
updated Jan 23, 2020
Warning not showing up when deprecated variable is explicitly imported

#15337 · opened Jul 03, 2018 by alanasp 5 Pnormal Trac import bug error messages
- 3
updated Jan 23, 2020
ghc-pkg misbehaves after possible miscompilation on m68k and sh4

#15338 · opened Jul 04, 2018 by glaubitz 5 Pnormal Trac import bug incorrect runtime result
- 15
updated Jun 12, 2020
Investigate using Ward on RTS

#15340 · opened Jul 04, 2018 by Ben Gamari 5 Pnormal Trac import task
- 3
updated Apr 23, 2020
Duplication between `CoreSubst` and `SimplEnv` is very unfortunate

#15345 · opened Jul 05, 2018 by Matthew Pickering 5 Pnormal Trac import task
- 4
updated Jan 23, 2020
QuantifiedConstraints: Implication constraints with type families don't work

#15347 · opened Jul 05, 2018 by aaronvargo 5 Pnormal QuantifiedConstraints Trac import bug typechecker
- 21
updated Sep 18, 2019
QuantifiedConstraints ignore FunctionalDependencies

#15351 · opened Jul 07, 2018 by aaronvargo 5 FunctionalDependencies Pnormal QuantifiedConstraints Trac import bug typechecker
- 14
updated Dec 03, 2020
Template Haskell should turn off RebindableSyntax in quotes

#15356 · opened Jul 08, 2018 by Richard Eisenberg 5 Pnormal TemplateHaskell Trac import bug
- 4
updated Jan 23, 2020
no way to talk about unpacking sum types / unpacking tuples

#15358 · opened Jul 10, 2018 by chessai 9.2.1 5 Pnormal Trac import UnboxedSums UnboxedTuples feature request
- 3
updated Jan 23, 2021
Replace the atomicModifyMutVar# primop

#15364 · opened Jul 11, 2018 by David Feuer 9.2.1 5 Pnormal RTS Trac import feature request ghc proposal
- 3
updated Jan 23, 2021
GHC.Exts.Heap.getClosureData doesn't return the payload for AP_STACK

#15375 · opened Jul 13, 2018 by Simon Marlow 9.2.1 3 Plow RTS Trac import bug
- 4
updated Jan 23, 2021
GHC determine illegal kind for standalone deriving with Deriving via

#15376 · opened Jul 14, 2018 by mizunashi_mana 9.2.1 5 Pnormal Trac import bug deriving
- 6
updated Jan 23, 2021
Use TcLevels to decide about floating out of implications

#15378 · opened Jul 14, 2018 by Richard Eisenberg 9.2.1 5 Pnormal Trac import task
- 2
updated Jan 25, 2021
heapprof001 segfaults in prof_hc_hb way on i386

#15382 · opened Jul 15, 2018 by Ben Gamari 9.2.1 5 CI breakage Pnormal Trac import bug
- 9
updated Jan 23, 2021
T3171 doesn't terminate with Interrupted message on Darwin

#15383 · opened Jul 15, 2018 by Ben Gamari 7 Phigh Trac import bug
- 6
updated Jan 23, 2020
Every implication should bump the TcLevel exactly once

#15384 · opened Jul 15, 2018 by Richard Eisenberg 9.2.1 5 Pnormal Trac import task
- 10
updated Jan 23, 2021
-Wall-missed-specialisations warnings not fatal with -Werror

#15389 · opened Jul 15, 2018 by ChaiTRex 9.2.1 5 Pnormal Trac import bug
- 4
updated Jan 23, 2021
Maybe ghc-pkg register should unregister packages with "incompatible" signatures

#15391 · opened Jul 16, 2018 by Edward Z. Yang 9.2.1 5 Pnormal Trac import backpack bug ghc-pkg
- 2
updated Jan 23, 2021
Inconsistency in parsing trailing commas inside import section

#15392 · opened Jul 16, 2018 by Dmitrii Kovanikov 9.2.1 5 Pnormal Trac import feature request parser
- 4
updated Jan 23, 2021
GHC doesn't come with dynamic object files/libraries compiled with profiling

#15394 · opened Jul 16, 2018 by mrkkrp 9.2.1 5 Pnormal Trac import feature request
- 4
updated Jan 23, 2021
Make StaticPtr (more) robust to code changes and recompilation

#15395 · opened Jul 16, 2018 by richardw 9.2.1 5 Pnormal StaticPointers Trac import feature request
- 2
updated Jan 23, 2021
Linking Issue on Ubuntu and Fedora with Provided Bindists (GHC-8.4.2)

#15397 · opened Jul 16, 2018 by Ara Adkins 8.4.4 9 Phighest Trac import bug incorrect runtime result
- 2
- 6
updated Jul 07, 2019
The settings and behaviour of idle GC are very confusing

#15402 · opened Jul 16, 2018 by Niklas Hambüchen 9.2.1 5 Pnormal RTS Trac import bug newcomer
- 2
updated Jan 23, 2021
Quantified constraints half-work with equality constraints

#15409 · opened Jul 17, 2018 by AntC 9.2.1 5 Pnormal QuantifiedConstraints Trac import bug
- 3
updated Jan 23, 2021
Why both gen and gen_no in bdescr?

#15414 · opened Jul 18, 2018 by Ben Gamari 9.2.1 5 Pnormal RTS Trac import task
- 6
updated Jan 23, 2021
Higher rank types in pattern synonyms

#15416 · opened Jul 19, 2018 by mniip 9.2.1 5 Pnormal PatternSynonyms Trac import bug typechecker
- 4
updated Jan 23, 2021
Weak pointers to static objects are sometimes not detected as unreachable

#15417 · opened Jul 19, 2018 by Ömer Sinan Ağacan Research needed 5 Pnormal RTS Trac import bug
- 1
updated Jul 07, 2019
Performance drop 60 times on non-profiling binary

#15418 · opened Jul 19, 2018 by Håkan Thörngren 9.2.1 7 RTS Trac import bug info needed
- 21
updated Jan 23, 2021
executable with library and template haskell doesn't compile statically

#15420 · opened Jul 20, 2018 by tiny 9.2.1 5 Pnormal Trac import bug
- 3
updated Jan 23, 2021
There should be a flag for GHCi that tells it to load as many modules as possible

#15424 · opened Jul 20, 2018 by mrkkrp 9.2.1 5 GHCi Pnormal Trac import feature request
- 3
updated Jan 23, 2021
GHC does not warn when two conflicting packages with same name are given via a dependent package and -package-db

#15425 · opened Jul 20, 2018 by Niklas Hambüchen 9.2.1 5 Pnormal Trac import bug
- 3
updated Jan 23, 2021
The docs for Unsafe.Coerce should recommend using Data.Coerce instead

#15429 · opened Jul 21, 2018 by Simon Jakobi 9.2.1 5 Pnormal Trac import core libraries task
- 1
updated Jan 23, 2021
Referring to current module (or aliasing current module)

#15432 · opened Jul 23, 2018 by Andri M ⊥ 5 Pnormal Trac import feature request
- 2
- 1
updated Oct 02, 2020
Internal error with PartialTypeSignatures and TH

#15433 · opened Jul 23, 2018 by Krzysztof Gogolewski 9.2.1 5 Pnormal Trac import bug partial type sigs
- 4
updated Jan 23, 2021
DerivingVia (and perhaps even GND) works badly with DeriveGeneric

#15434 · opened Jul 24, 2018 by Hiromi Ishii 9.2.1 5 Pnormal Trac import bug deriving
- 6
updated Jan 23, 2021
Make nofib-style anaysis for perf/compiler

#15435 · opened Jul 24, 2018 by Simon Peyton Jones 9.2.1 5 Pnormal Trac import bug
- 2
updated Jan 22, 2021
Internal error when applying a scoped type variable inside a typed expression quotation

#15437 · opened Jul 25, 2018 by dminuoso 8.10.2 5 Pnormal TemplateHaskell Trac import broken test bug typed TemplateHaskell
- 10
updated May 26, 2020
Data type with phantoms using TypeInType isn't coercible

#15441 · opened Jul 26, 2018 by glittershark Research needed 5 Pnormal Trac import bug roles
- 5
updated Jul 07, 2019
8.4.3 has an undocumented dependency on libnuma.

#15444 · opened Jul 27, 2018 by Andreas Klebinger 8.6.4 5 Pnormal Trac import bug
- 7
updated Jul 07, 2019
Allow execution of stage2 compiler to happen later

#15448 · opened Jul 27, 2018 by Ben Gamari 9.2.1 5 Pnormal Trac import feature request
- 3
updated Jan 22, 2021
[GHCi] Add an option to make tab completion case-insensitive

#15452 · opened Jul 28, 2018 by f-a 9.2.1 3 GHCi Plow Trac import feature request
- 3
updated Jan 22, 2021
Memory usage when compiling jsaddle-dom exploded in 8.4.3

#15455 · opened Jul 28, 2018 by eskimor 9.2.1 7 Phigh Trac import bug compiler perf
- 25
updated Jan 22, 2021
Wredundant-constraints does not work when constraint synonym is used

#15459 · opened Jul 30, 2018 by Philippe 9.2.1 5 Pnormal Trac import bug
- 4
updated Jan 22, 2021
Machine accessible interface to GHCi

#15461 · opened Jul 31, 2018 by Ben Gamari 9.2.1 5 GHCi Pnormal Trac import feature request newcomer
- 14
updated Jan 22, 2021
fixST for lazy ST is a bit wrong

#15462 · opened Jul 31, 2018 by David Feuer 9.2.1 5 Pnormal Trac import bug core libraries incorrect runtime result
- 1
updated Jan 22, 2021
Template Haskell creates System names when it shouldn't

#15464 · opened Aug 01, 2018 by Richard Eisenberg 9.2.1 5 Pnormal TemplateHaskell Trac import bug
- 2
updated Jan 22, 2021
unregisterised validation failures

#15467 · opened Aug 02, 2018 by Alp Mestanogullari 5 Pnormal Trac import broken test bug
- 6
updated Jul 23, 2020
add -Wname-shadowing and -Wunused-pattern-binds to the default warnings for ghci

#15468 · opened Aug 02, 2018 by george.colpitts 9.2.1 5 GHCi Pnormal Trac import bug error messages feature request
- 5
updated Jan 22, 2021
Record projections with ambiguous types

#15470 · opened Aug 02, 2018 by sweirich@cis.upenn.edu 9.2.1 5 Pnormal Trac import feature request
- 5
updated Jan 22, 2021
Can't build `prof`-flavour with `-fauto-all`

#15477 · opened Aug 05, 2018 by Moritz Angermann 9.2.1 5 Pnormal Trac import bug
- 3
updated Jan 22, 2021
Return HsType GhcTc from tc_hs_type

#15479 · opened Aug 05, 2018 by Vladislav Zavialov ⊥ 5 Pnormal Trac import task
- 2
updated Jul 07, 2019
ghc -M requires -dep-suffix for no good reason

#15483 · opened Aug 06, 2018 by Artem Pelenitsyn 9.2.1 5 Pnormal Trac import driver feature request newcomer
- 2
updated Jan 22, 2021
GHC uses 300% CPU when calling into blocking C call

#15485 · opened Aug 07, 2018 by oconnore 8.6.1 5 Pnormal RTS Trac import bug
- 3
updated Jul 07, 2019
GHC takes up huge amount of memory when compiling accelerate 1.2.0

#15488 · opened Aug 08, 2018 by noah 9.2.1 7 Phigh Trac import bug compiler perf
- 28
updated Jan 22, 2021
TestCoercion should be a superclass of TestEquality

#15489 · opened Aug 08, 2018 by Zemyla 5 Pnormal Trac import feature request
- 2
updated Jul 07, 2019
Elide empty dictionaries

#15493 · opened Aug 09, 2018 by mnoonan 8.6.1 5 Pnormal Trac import feature request
- 4
updated Feb 10, 2021
Cannot install GHC through stack on NixOS

#15494 · opened Aug 09, 2018 by Stefanov 8.6.1 5 Pnormal Trac import bug upstream
- 6
updated Oct 25, 2019
Handling Source Locations via TTG

#15495 · opened Aug 09, 2018 by Shayan-Najd ⊥ 5 Pnormal TTG Trac import task
- 37
updated Nov 09, 2020
HPC: do notation marks () as non-covered

#15498 · opened Aug 09, 2018 by tom-bop 8.6.1 5 HPC Pnormal Trac import bug error messages
- 1
updated Jul 07, 2019
Fix unknown symbols/addresses in perf output

#15501 · opened Aug 10, 2018 by Last G Research needed 5 Pnormal Trac import bug code generation debug information
- 1
updated Jul 07, 2019
interpreter: sequence_ (replicate 100000000 (return ())) gobbles up memory

#15503 · opened Aug 10, 2018 by Bertram Felgenhauer 9.2.1 7 GHCi Phigh Trac import bug runtime perf
- 18
updated Jan 22, 2021
-XStrict doesn't prevent warnings from -Wunbanged-strict-patterns

#15504 · opened Aug 10, 2018 by ChaiTRex 8.6.1 5 Pnormal Trac import bug
- 1
updated Jul 07, 2019
CI setup should build and run nofib

#15506 · opened Aug 11, 2018 by Joachim Breitner 5 Pnormal Trac import task
- 2
updated Jul 07, 2019
Qualified Holes

#15510 · opened Aug 12, 2018 by Andrew Martin 9.2.1 3 Plow Trac import feature request
- 5
updated Jan 22, 2021
Rewrite rules should be able to produce custom compiler errors

#15512 · opened Aug 13, 2018 by ChaiTRex 8.6.1 5 Pnormal Trac import feature request
- 4
updated Jul 07, 2019
How to pass "-hide-all-packages" to the GHC API?

#15513 · opened Aug 13, 2018 by lspitzner 8.6.1 5 Pnormal Trac import documentation feature request
- 2
updated Jul 07, 2019
ghci: dynamic linking fails on osx

#15516 · opened Aug 13, 2018 by kfiz 8.6.1 5 GHCi Pnormal Trac import bug compiler crash
- 1
updated Jul 07, 2019
Provide a strict version of sum

#15521 · opened Aug 14, 2018 by dnadales 8.6.1 5 Pnormal Trac import core libraries feature request
- 8
updated Jul 07, 2019
Cannot bind symbolic names in a rule

#15522 · opened Aug 15, 2018 by Richard Eisenberg 8.6.1 5 Pnormal Trac import bug documentation
- 1
updated Jul 07, 2019
Performance regression when using the GHC API to evaluate code compared to 8.4

#15524 · opened Aug 15, 2018 by Vaibhav Sagar 9.2.1 7 Phigh Trac import bug runtime perf upstream
- 36
updated Jan 22, 2021
CApiFFI generates bad prototypes for pointers of `Foreign.C` types

#15531 · opened Aug 17, 2018 by Herbert Valerio Riedel 8.6.1 5 Pnormal Trac import bug
- 1
- 1
updated Jul 07, 2019
Relaxing Levity-Polymorphic Binder Check for Lifted vs Unlifted pointers

#15532 · opened Aug 17, 2018 by Andrew Martin 8.6.1 5 Pnormal Trac import feature request levity polymorphism
- 19
updated Mar 19, 2020
Access the number of bits in the target machine's Int type at compile time

#15533 · opened Aug 17, 2018 by ChaiTRex 8.6.1 5 Pnormal Trac import feature request
- 2
updated Jul 07, 2019
Allow associated types in Minimal pragmas

#15534 · opened Aug 17, 2018 by David Feuer 9.2.1 5 Pnormal Trac import feature request
- 3
updated Jan 22, 2021
Unify unlifted pointer equality primitives

#15536 · opened Aug 17, 2018 by David Feuer 9.2.1 5 Pnormal Trac import feature request
- 3
updated Jan 22, 2021
GHCi does not follow the XDG Base Directory Specification

#15540 · opened Aug 19, 2018 by Richard Szibele 8.6.1 5 GHCi Pnormal Trac import bug newcomer
- 2
- 7
updated Jan 07, 2021
package environment files and the GHC API

#15541 · opened Aug 19, 2018 by lspitzner 8.6.1 10 GHC API Phighest Trac import bug documentation
- 10
updated May 14, 2020
DuplicateRecordFields not honored within a data family?

#15542 · opened Aug 19, 2018 by michalrus 8.6.1 5 OverloadedRecordFields Pnormal Trac import bug
- 1
updated Jul 07, 2019
Binary crashes under dtrace

#15543 · opened Aug 20, 2018 by Last G Research needed 5 Pnormal Trac import bug runtime crash
- 2
updated Dec 25, 2019