Issues · Glasgow Haskell Compiler / GHC

New issue

Type checker cannot deduce type

#10227 · opened Apr 02, 2015 by lennart@augustsson.net 5 Pnormal Trac import bug injective type families
- 3
updated Jul 07, 2019
setThreadAffinity assumes a certain CPU virtual core layout

#10229 · opened Apr 02, 2015 by Niklas Hambüchen 5 Pnormal RTS Trac import bug runtime perf
- 6
updated Jul 07, 2019
Get profiling info without stopping program

#10235 · opened Apr 03, 2015 by mwotton 5 Pnormal Trac import feature request
- 4
updated Jan 22, 2021
GHCi leaky abstraction: error message mentions `ghciStepIO`

#10249 · opened Apr 06, 2015 by Icelandjack 8.2.1 5 GHCi Pnormal Trac import bug error messages feature request
- 11
updated Oct 28, 2019
Split base for Backpack

#10266 · opened Apr 08, 2015 by Edward Z. Yang 3 Plow Trac import backpack core libraries task
- 7
updated Jul 07, 2019
inconsistent semantics of type class instance visibility outside recursive modules

#10270 · opened Apr 08, 2015 by skilpat 5 Pnormal Trac import bug
- 5
updated Jul 07, 2019
Typed Template Haskell splice difficulty when resolving overloading

#10271 · opened Apr 08, 2015 by Simon Peyton Jones 5 Pnormal TemplateHaskell Trac import bug typed TemplateHaskell
- 6
updated Aug 25, 2020
Putting SCC in heavily inlined code results in "error: redefinition of global"

#10295 · opened Apr 13, 2015 by yongqli 5 Pnormal Trac import bug
- 6
updated Jul 07, 2019
Make it easier to print stack traces when debugging GHC itself

#10303 · opened Apr 15, 2015 by Richard Eisenberg 5 Pnormal Trac import task
- 3
updated Jul 07, 2019
package name returned from tyConPackage is garbled

#10311 · opened Apr 16, 2015 by waldmann@imn.htwk-leipzig.de 5 Pnormal Trac import bug
- 10
updated Jul 07, 2019
Eta expand PAPs

#10319 · opened Apr 17, 2015 by Joachim Breitner 5 Arity and eta expansion Pnormal Trac import task
- 2
updated Feb 26, 2020
our rts/ghc-prim/base shared library tricks don't work on Android

#10324 · opened Apr 18, 2015 by rwbarton 3 Plow Trac import feature request
- 1
updated Jul 07, 2019
Devise workaround for how infinite types prevent closed type family reduction

#10327 · opened Apr 20, 2015 by Richard Eisenberg 5 Pnormal Trac import feature request
- 3
updated Jul 07, 2019
Control.Monad exports lead to weird Haddocks

#10328 · opened Apr 20, 2015 by David Feuer 3 Plow Trac import core libraries documentation feature request
- 4
updated Jul 07, 2019
Better Template Haskell error message locations

#10330 · opened Apr 20, 2015 by Simon Peyton Jones 5 Pnormal TemplateHaskell Trac import bug
- 3
updated Jul 07, 2019
Accept HsSyn in splices and generate it in quotes (ghc-api)

#10331 · opened Apr 20, 2015 by Edward Z. Yang 3 Plow TemplateHaskell Trac import feature request
- 4
updated Jul 07, 2019
hs-boot modification doesn't induce recompilation

#10333 · opened Apr 21, 2015 by Edward Z. Yang 5 Pnormal Trac import bug hs-boot
- 3
updated Jul 07, 2019
__ctzdi2/si2/__clzdi2/si2 unknown symbols in ghc-prim on non-shared libs platform

#10334 · opened Apr 21, 2015 by kgardas 5 Pnormal Trac import bug core libraries
- 7
updated Jul 07, 2019
Support qualified self {-# SOURCE #-} import

#10336 · opened Apr 21, 2015 by Edward Z. Yang ⊥ 0 Plow Trac import feature request
- 4
updated Jul 07, 2019
One-shot module loops have hard to understand messages

#10337 · opened Apr 21, 2015 by Edward Z. Yang 5 Pnormal Trac import bug typechecker
- 2
updated Jul 07, 2019
GHC Forgets Constraints

#10338 · opened Apr 21, 2015 by Eric Crockett 5 Pnormal Trac import bug
- 8
updated Jul 07, 2019
hs-boot files can have bogus declarations if they're not exported

#10341 · opened Apr 22, 2015 by Edward Z. Yang 3 Plow Trac import bug typechecker
- 1
updated Jul 07, 2019
Make BranchList simpler

#10344 · opened Apr 23, 2015 by Richard Eisenberg 5 Pnormal Trac import task
- 5
updated Jul 07, 2019
Cross-module SpecConstr

#10346 · opened Apr 23, 2015 by Simon Peyton Jones 8.6.1 5 Pnormal Trac import bug newcomer
- 15
updated Feb 07, 2020
Properly link Haskell shared libs on all systems

#10352 · opened Apr 24, 2015 by duncan 5 Pnormal Trac import package system task
- 25
updated Oct 13, 2020
Haddock for Data.List should list instances

#10353 · opened Apr 24, 2015 by Richard Eisenberg 5 Pnormal Trac import bug documentation
- 2
updated Jul 07, 2019
"ghc: panic! (the 'impossible' happened)"

#10367 · opened Apr 30, 2015 by bgwines 5 Pnormal Trac import bug info needed runtime crash
- 3
updated Jul 07, 2019
GHC fails to inline and specialize a function

#10371 · opened May 01, 2015 by MikeIzbicki 5 Pnormal Trac import bug
- 4
updated Jul 07, 2019
Haiku: ghc-stage1 compiler crashes at exit

#10373 · opened May 02, 2015 by jessicah 5 Pnormal Trac import bug ghc build failure
- 1
updated Jul 07, 2019
Can't build GHC with a dynamic only GHC installation

#10374 · opened May 02, 2015 by jessicah 5 Pnormal Trac import bug ghc build failure
- 5
updated Jul 07, 2019
min/max for Double/Float instances are incorrect

#10378 · opened May 04, 2015 by Levent Erkök 5 Pnormal Trac import bug
- 9
updated Jul 07, 2019
Type-checking failure with RankNTypes and RebindableSyntax

#10381 · opened May 04, 2015 by Richard Eisenberg 5 Pnormal Trac import bug
- 2
updated Jul 07, 2019
AArch64: get GHC Calling convention working

#10383 · opened May 05, 2015 by erikd 8.2.1 5 Pnormal Trac import feature request ghc build failure
- 42
updated Dec 09, 2019
Annotation restriction is not respected while generating Annotation via TH

#10385 · opened May 05, 2015 by Simon Peyton Jones 5 Pnormal Trac import bug
- 3
updated Jul 07, 2019
toRational should error out on NaN and Infinity values for Double/Floats

#10387 · opened May 05, 2015 by Levent Erkök 5 Pnormal Trac import bug
- 0
updated Jul 07, 2019
Ability to get export list of TH reified module

#10391 · opened May 07, 2015 by dmcclean 3 Plow TemplateHaskell Trac import feature request
- 10
updated Apr 26, 2020
state hack-related regression

#10401 · opened May 11, 2015 by rwbarton 5 Pnormal Trac import bug runtime perf
- 3
updated Jul 07, 2019
Neighbour let-bindings are not reported as relevant

#10411 · opened May 12, 2015 by Feuerbach 5 Pnormal Trac import bug
- 5
updated Jul 07, 2019
Rule matching not "seeing through" floating and type lambda (and maybe cast)

#10417 · opened May 14, 2015 by duncan 5 Pnormal Trac import bug
- 6
updated Jul 07, 2019
Incorrect RULE warning on constructor, and inablilty to {-# INLINE [0] #-} constrcutor

#10418 · opened May 14, 2015 by duncan 5 Pnormal Trac import bug
- 2
updated Jul 07, 2019
Build path leaks into ABI hashes

#10424 · opened May 17, 2015 by Joachim Breitner 5 Pnormal Trac import bug determinism
- 1
- 9
updated May 19, 2020
EqualityConstraints extension?

#10431 · opened May 18, 2015 by Adam Gundry 5 Pnormal Trac import feature request typechecker
- 13
updated Aug 10, 2020
SPECIALISE instance does not specialize as far as SPECIALISE for type signatures

#10434 · opened May 19, 2015 by andreas.abel 5 Pnormal Trac import bug
- 1
updated Jul 07, 2019
Excessive numbers of packages loaded for TH

#10436 · opened May 20, 2015 by duncan 5 Pnormal Trac import bug compiler crash
- 4
updated Jul 07, 2019
Float out just gets floated in

#10440 · opened May 22, 2015 by Simon Peyton Jones 5 Pnormal Trac import bug
- 0
updated Jul 07, 2019
Wrong stack space size when using -Ksize

#10445 · opened May 25, 2015 by Andrés Sicard-Ramírez 5 Pnormal Trac import bug
- 14
updated Jan 23, 2020
Poor type error message when an argument is insufficently polymorphic

#10450 · opened May 27, 2015 by sjcjoosten 3 Plow RankNTypes Trac import bug error messages typechecker
- 3
updated Jul 07, 2019
Wrong CPP during cross-compilation

#10456 · opened May 27, 2015 by Jakub Zalewski 3 Plow Trac import bug ghc build failure
- 7
updated Jul 07, 2019
Make listArray non-strict in structure of argument list

#10465 · opened May 30, 2015 by atze 5 Pnormal Trac import core libraries feature request runtime crash
- 1
updated Jul 07, 2019
ghc crash on arm with -j2: internal error: scavenge: unimplemented/strange closure type

#10469 · opened May 31, 2015 by joeyhess 5 Pnormal Trac import bug compiler crash
- 6
updated Jul 07, 2019
Allocating StablePtrs leads to GC slowdown even after they're freed

#10470 · opened Jun 01, 2015 by bitonic 5 Pnormal RTS Trac import bug runtime perf
- 4
updated Jul 07, 2019
Shorter import syntax

#10478 · opened Jun 03, 2015 by acowley 5 Pnormal Trac import feature request
- 1
- 24
updated Jul 07, 2019
more specific types in the generated *_stub.h files

#10505 · opened Jun 10, 2015 by imz 5 FFI Pnormal Trac import feature request
- 2
updated Jul 07, 2019
SourceNotes are not applied to all identifiers

#10506 · opened Jun 10, 2015 by Eric Seidel 8.6.1 5 Pnormal Trac import bug
- 26
updated Jul 07, 2019
UnicodeSyntax documentation lists wrong symbols

#10509 · opened Jun 11, 2015 by zardoz 8.0.1 5 Pnormal Trac import bug documentation
- 7
updated Jul 07, 2019
Generic for existential types

#10514 · opened Jun 12, 2015 by andreas.abel 5 Pnormal Trac import core libraries feature request generics
- 17
updated Jan 24, 2021
Overlapping instances, incoherence, and optimisation

#10526 · opened Jun 15, 2015 by Simon Peyton Jones 5 Pnormal Trac import bug
- 2
updated Jul 07, 2019
modules that can be linked successfully when compiled with optimizations, fail to link with: multiple definition of `__stginit_ZCMain'

#10531 · opened Jun 15, 2015 by imz 5 Pnormal Trac import bug
- 11
updated Jul 07, 2019
RULE left-hand side too complicated to desugar

#10555 · opened Jun 21, 2015 by yongqli 3 Plow Trac import bug
- 8
updated Feb 03, 2021
-f and -O options interact in non-obvious, order dependent ways

#10560 · opened Jun 22, 2015 by Ben Gamari 5 Pnormal Trac import bug error messages
- 20
updated Jul 07, 2019
Type signatures are not implicitly quantified over TH type variables

#10572 · opened Jun 26, 2015 by spinda 5 Pnormal TemplateHaskell Trac import bug
- 6
updated Jul 07, 2019
Tiny bug in lexer around lexing banana brackets

#10582 · opened Jun 27, 2015 by Richard Eisenberg 8.4.1 3 Arrows Plow Trac import broken test bug
- 5
updated Jul 07, 2019
Chaos in Lexeme.hs

#10583 · opened Jun 27, 2015 by Richard Eisenberg 5 Pnormal Trac import bug
- 11
updated Jul 07, 2019
Installation of SFML failed

#10584 · opened Jun 27, 2015 by SoleSoul 5 Pnormal Trac import bug
- 8
updated Jul 07, 2019
Suspending and unsuspending ghci kills and spawns threads

#10587 · opened Jun 29, 2015 by niteria 3 GHCi Plow Trac import bug
- 3
updated Jul 07, 2019
BuiltinRules override other rules in some cases.

#10595 · opened Jul 01, 2015 by gjsimms 7 Phigh Trac import bug
- 16
updated Jul 07, 2019
Template Haskell doesn't allow `newName "type"`

#10599 · opened Jul 03, 2015 by meteficha 5 Pnormal TemplateHaskell Trac import bug
- 23
updated Jan 23, 2020
avoid redundant stores to the stack when examining already-tagged data

#10606 · opened Jul 05, 2015 by rwbarton 5 Pnormal Trac import code generation feature request
- 4
updated Jul 07, 2019
Mechanism for checking that we only enter single-entry thunks once

#10613 · opened Jul 08, 2015 by Ben Gamari 5 Pnormal Trac import demand analysis feature request
- 22
updated Nov 23, 2020
Panic in ghci debugger with PolyKinds and PhantomTypes

#10616 · opened Jul 08, 2015 by Ben Price 5 GHCi Pnormal Trac import bug debugger
- 1
- 5
updated Nov 24, 2019
Panic in GHCi debugger with GADTs, PolyKinds and Phantom types

#10617 · opened Jul 08, 2015 by Ben Price 5 GHCi Pnormal Trac import bug debugger
- 1
- 2
updated Nov 24, 2019
Handle annotations in hsig/boot files

#10621 · opened Jul 08, 2015 by spinda 5 GHC API Pnormal Trac import feature request
- 2
updated Jul 07, 2019
Missed opportunity for SpecConstr

#10626 · opened Jul 10, 2015 by Simon Peyton Jones 5 Pnormal Trac import bug
- 10
updated Jul 07, 2019
Report of GHC Panic loading temp shared object

#10631 · opened Jul 12, 2015 by seewalker 3 Plow Trac import bug compiler crash info needed
- 3
updated Jul 07, 2019
Document prim-ops

#10640 · opened Jul 15, 2015 by Ben Gamari 8.6.1 5 Pnormal Trac import documentation task
- 9
updated Oct 29, 2020
GHC cannot import submodules when run from subfolder

#10643 · opened Jul 15, 2015 by FPtje 5 Pnormal Trac import bug
- 15
updated Jul 07, 2019
Some 64-vector SIMD primitives are absolutely useless

#10648 · opened Jul 17, 2015 by mniip 5 Pnormal SIMD Trac import bug
- 5
updated Jul 07, 2019
Better cache performance in Array#

#10652 · opened Jul 17, 2015 by MikeIzbicki 5 Pnormal Trac import feature request
- 16
updated Jul 07, 2019
inplace/bin/ghc-stage1 doesn't respect --with-ld override

#10671 · opened Jul 23, 2015 by mfox 5 Pnormal Trac import bug
- 9
updated Jul 07, 2019
Expose OSThreadID and assorted functions from Haskell

#10674 · opened Jul 23, 2015 by Mateusz Kowalczyk 5 Pnormal Trac import feature request
- 2
updated Jul 07, 2019
GHC does not check the functional dependency consistency condition correctly

#10675 · opened Jul 23, 2015 by Simon Peyton Jones 5 FunctionalDependencies Pnormal Trac import bug
- 21
updated Dec 30, 2020
Teach GHC to interpret all hs files as two levels of hs-boot files (abstract types only/full types + values)

#10681 · opened Jul 24, 2015 by Edward Z. Yang 3 Plow Trac import backpack feature request
- 7
updated Jul 07, 2019
Process stops responding to sigINT

#10686 · opened Jul 25, 2015 by hamish 5 Pnormal Trac import bug
- 2
updated Jul 07, 2019
Forall'd variable ‘$rcobox’ is not bound in RULE lhs

#10698 · opened Jul 28, 2015 by Joachim Breitner 5 Pnormal Trac import broken test bug
- 2
updated Jul 07, 2019
-fth-dec-file uses qualified names from hidden modules

#10701 · opened Jul 28, 2015 by Fabian 8.0.1 5 Pnormal TemplateHaskell Trac import bug compiler crash
- 7
updated Jul 07, 2019
-fth-dec-file uses qualified names in binding positions

#10702 · opened Jul 28, 2015 by Fabian 8.0.1 5 Pnormal Trac import bug
- 6
updated Jul 07, 2019
-fth-dec-file outputs invalid case clauses

#10707 · opened Jul 29, 2015 by Fabian 8.0.1 5 Pnormal TemplateHaskell Trac import bug newcomer
- 10
updated Jul 07, 2019
Rejection of constant functions defined using conditional pattern matching

#10708 · opened Jul 29, 2015 by HubertGaravel 5 Pnormal Trac import bug feature request
- 6
updated Jul 07, 2019
More self-explanatory pragmas for inlining phase control

#10710 · opened Jul 30, 2015 by Joachim Breitner 5 Pnormal Trac import parser task
- 1
updated Jul 07, 2019
Spectral norm allocations increased 17% between 7.6 and 7.8

#10730 · opened Aug 03, 2015 by Ben Gamari 3 Plow Trac import bug runtime perf
- 1
updated Jul 07, 2019
Legal Bang Patterns cannot parse

#10732 · opened Aug 03, 2015 by rem 5 Pnormal Trac import bug parser
- 3
updated Jul 07, 2019
Smooth out the differences between `compiler/utils/Pretty.hs` and `libraries/pretty`

#10735 · opened Aug 04, 2015 by thomie 8.0.1 5 Pnormal Trac import task
- 13
updated Jul 07, 2019
Resuscitate the humble ticky-ticky profiler

#10739 · opened Aug 05, 2015 by Ben Gamari 5 Pnormal Trac import task
- 9
updated Feb 02, 2021
Ensure that ticky, profiler, and GC allocation numbers agree

#10740 · opened Aug 05, 2015 by Ben Gamari 5 Pnormal Trac import task
- 0
updated Jul 07, 2019
add flag to dump module and package dependencies

#10741 · opened Aug 05, 2015 by elaforge 5 Pnormal Trac import feature request
- 1
updated Jul 07, 2019
Boot file instances should imply superclasses

#10749 · opened Aug 07, 2015 by Edward Z. Yang 5 Pnormal Trac import backpack bug
- 3
updated Jul 07, 2019
Allow users to indicate inaccessible patterns

#10756 · opened Aug 07, 2015 by edsko@edsko.net 5 Pnormal Trac import feature request
- 15
updated Jul 07, 2019
GHC panic when compiling vimus: failed to map segment from shared object

#10761 · opened Aug 08, 2015 by haasn 5 Pnormal Trac import bug compiler crash
- 8
updated Jul 07, 2019
user manual: INLINE's interaction with optimization levels is not clear

#10766 · opened Aug 11, 2015 by Ömer Sinan Ağacan 5 Pnormal Trac import documentation task
- 2
updated Jul 07, 2019
Location information of LHsModule is incorrect

#10768 · opened Aug 12, 2015 by Ben Gamari 3 Plow Trac import bug error messages
- 2
updated Jul 07, 2019