Issues · Glasgow Haskell Compiler / GHC

New issue

Application (warp) server crashing periodically with "TSO object entered"

#15010 · opened Apr 06, 2018 by ramirez7 5 Phigh RTS Tbug Trac import info needed runtime crash
- 7
updated Jan 23, 2020
Automate update of VersionHistory table

#15011 · opened Apr 07, 2018 by Ben Gamari 5 Pnormal Ttask Trac import infrastructure
- 3
updated Jan 23, 2020
Exhaustivity check should suggest when COMPLETE could be helpful

#15014 · opened Apr 08, 2018 by Edward Z. Yang 8.4.3 5 Pnormal PatternSynonyms Tbug Trac import error messages pattern match warnings typechecker
- 0
updated Jul 07, 2019
Parsing of exp_doc loses section markers

#15015 · opened Apr 09, 2018 by Levent Erkök 8.4.3 5 Pnormal Tbug Trac import parser
- 0
updated Jul 07, 2019
Referencing a do-bound variable in a rec block with ApplicativeDo results in variable not in scope during type checking

#15016 · opened Apr 09, 2018 by rjmk 8.4.3 7 ApplicativeDo Phigh Tbug Trac import
- 7
updated Jul 07, 2019
PatternSynonyms: Problems with quantified constraints / foralls

#15020 · opened Apr 10, 2018 by Icelandjack 5 Pnormal PatternSynonyms QuantifiedConstraints Tbug Trac import
- 4
updated Jan 23, 2020
haddock parsing fails with valid input

#15029 · opened Apr 12, 2018 by Levent Erkök 5 Pnormal Tbug Trac import parser
- 5
updated Oct 29, 2020
Desugaring `mdo` moves a `let` where it shouldn't be

#15034 · opened Apr 14, 2018 by parsonsmatt 5 Pnormal RecursiveDo Tbug Trac import
- 6
updated Jan 23, 2020
A more aggressive version of -fprint-expanded-synonyms that prints all type synonyms

#15043 · opened Apr 16, 2018 by Domen Kožar 5 Pnormal Tfeature request Trac import typechecker
- 13
updated Jan 23, 2020
Option to output instance resolution process

#15044 · opened Apr 16, 2018 by lyxia 5 Pnormal Tfeature request Trac import
- 5
updated Jan 23, 2020
Wrappers inlined too late

#15056 · opened Apr 19, 2018 by Simon Peyton Jones 5 Pnormal Tbug Trac import simplifier
- 5
updated Jan 23, 2020
Missed SpecConstr opportunity

#15069 · opened Apr 20, 2018 by Simon Peyton Jones 5 Pnormal SpecConstr Tbug Trac import
- 2
updated Jan 23, 2020
postInlineUnconditionally is too eager

#15070 · opened Apr 20, 2018 by Simon Peyton Jones 5 Pnormal Tbug Trac import
- 2
updated Jan 23, 2020
Teach the testsuite driver about response files

#15072 · opened Apr 20, 2018 by Ben Gamari 5 CI breakage Pnormal Ttask Trac import
- 11
updated Jan 23, 2020
Possible uninitialised values in ffi64.c

#15074 · opened Apr 20, 2018 by jrp2014 5 FFI Pnormal Tbug Trac import upstream
- 7
updated Jan 23, 2020
Sometimes '-optl-optl' used for linker options instead of just '-optl'

#15075 · opened Apr 21, 2018 by jwhite 5 Pnormal Tbug Trac import
- 3
updated Jan 23, 2020
Suggest NoMonomorphismRestriction or type signature

#15077 · opened Apr 22, 2018 by tomjaguarpaw 5 Pnormal Tfeature request Trac import
- 2
updated Jan 23, 2020
base: Customary type class laws (e.g. for Eq) and non-abiding instances (e.g. Float) should be documented

#15078 · opened Apr 23, 2018 by Simon Jakobi 5 Pnormal Tfeature request Trac import core libraries newcomer
- 21
updated Apr 26, 2020
List Operators Sorted by Precedence in GHCi

#15080 · opened Apr 24, 2018 by Sam Schweigel 5 GHCi Pnormal Tfeature request Trac import newcomer
- 12
updated May 23, 2020
Finite list becomes infinite after maping fractional function for high numbers

#15081 · opened Apr 24, 2018 by Onsed 5 Pnormal Tbug Trac import incorrect runtime result
- 18
updated Jan 30, 2020
Functions in HsUtils don't have the most general type

#15084 · opened Apr 25, 2018 by Matthew Pickering 8.6.1 7 Phigh Tbug Trac import
- 6
updated Jul 07, 2019
Do more coercion optimisation on the fly

#15090 · opened Apr 26, 2018 by Simon Peyton Jones 5 Coercions Pnormal Ttask Trac import compiler perf
- 4
updated Mar 12, 2021
Better occurrence analysis for join points

#15091 · opened Apr 26, 2018 by Simon Peyton Jones 5 Pnormal Ttask Trac import join points
- 4
updated Mar 22, 2021
Optionally bounds-check primops

#15092 · opened Apr 26, 2018 by David Feuer 5 Pnormal Tfeature request Trac import code generation
- 6
updated Jan 23, 2020
GHC fails to execute gcc on Windows when unicode character is in the path

#15096 · opened Apr 28, 2018 by Niklas Hambüchen 5 Pnormal Tbug Trac import Windows upstream
- 5
updated Nov 28, 2020
`ApplicativeDo` needlessly uses `join` too much

#15100 · opened Apr 29, 2018 by Edward Kmett 5 ApplicativeDo Pnormal Tbug Trac import code generation
- 5
updated Jan 23, 2020
Explore using pure unifier instead of monadic one

#15106 · opened Apr 30, 2018 by Richard Eisenberg 5 Pnormal Ttask Trac import
- 3
updated Jan 23, 2020
Do not make CAFs from literal strings

#15113 · opened May 02, 2018 by Simon Peyton Jones 5 CAFs Pnormal Tbug Trac import
- 1
- 21
updated Apr 01, 2020
Add linting checks for DWARF unwind information

#15117 · opened May 03, 2018 by Ben Gamari 5 Pnormal Tbug Trac import debug information
- 5
updated Jan 23, 2020
Opportunity to compress common info table representation.

#15126 · opened May 06, 2018 by Andreas Klebinger 5 Pnormal Ttask Trac import code generation
- 5
updated Jan 23, 2020
Expose ghc-pkg internals as a library

#15129 · opened May 07, 2018 by ryanreich 5 Pnormal Tfeature request Trac import core libraries
- 2
updated Jan 23, 2020
Hadrian doesn't rebuild changed `CoreUtils.hs`

#15130 · opened May 08, 2018 by Tobias Dammers 5 Pnormal Tbug Trac import
- 4
updated Jan 23, 2020
Overlapping typeclass instance selection depends on the optimisation level

#15135 · opened May 09, 2018 by Antoine Leblanc 5 Pnormal Tbug Trac import
- 10
updated Jan 23, 2020
Install the "primitive" package on CI before running tests

#15137 · opened May 10, 2018 by Ömer Sinan Ağacan 5 Pnormal Ttask Trac import
- 2
updated Jul 07, 2019
Type checker plugin receives Wanteds that are not completely unflattened

#15147 · opened May 13, 2018 by nfrisby 5 Pnormal Tbug Trac import plugins typechecker plugins
- 24
updated Jan 23, 2020
Allow setting of custom alignments

#15148 · opened May 14, 2018 by Andreas Klebinger 5 NCG backend Pnormal Ttask Trac import code generation
- 3
updated Jan 23, 2020
Better Interaction Between Specialization and GND

#15151 · opened May 14, 2018 by Andrew Martin Research needed 5 Pnormal Tfeature request Trac import deriving
- 4
updated Jul 07, 2019
GHC uses O_NONBLOCK on regular files, which has no effect, and blocks the runtime

#15153 · opened May 15, 2018 by Niklas Hambüchen 5 Pnormal RTS Tbug Trac import runtime perf
- 8
updated Jun 24, 2020
How untagged pointers sneak into banged fields

#15155 · opened May 15, 2018 by Gabor Greif 5 Pnormal Tbug Trac import code generation pointer tagging
- 22
updated Mar 25, 2021
Show instances for types exported from the ghc package

#15156 · opened May 16, 2018 by Simon Jakobi 5 Pnormal Tfeature request Trac import
- 4
updated Jan 23, 2020
Expand compatibility note for readMVar

#15159 · opened May 17, 2018 by David Feuer 5 Pnormal Tbug Trac import core libraries documentation
- 2
updated Jan 23, 2020
ghci cannot find symbols defined by TH's addForeignFilePath

#15161 · opened May 17, 2018 by Alp Mestanogullari 5 GHCi Pnormal Tbug Trac import broken test
- 0
updated Jul 07, 2019
DerivClause list is not populated for (TyConI (DataD ...))

#15167 · opened May 19, 2018 by 0xd34df00d 5 Pnormal Tbug TemplateHaskell Trac import
- 5
updated Jan 23, 2020
Superclass `Monad m =>` makes program run 100 times slower

#15176 · opened May 22, 2018 by danilo2 ⊥ 10 Phigh Tbug Trac import compiler perf
- 26
updated Nov 16, 2019
Faulty instance termination check, with PolyKinds and/or TypeInType

#15177 · opened May 22, 2018 by Simon Peyton Jones 5 Pnormal Tbug Trac import
- 8
updated Mar 10, 2020
Unwinding info for stg_ap_v_info is wrong

#15179 · opened May 22, 2018 by niteria 5 Pnormal Tbug Trac import debug information
- 1
updated Jul 07, 2019
Lazier Semigroup instance for Maybe

#15182 · opened May 24, 2018 by Andrew Martin 5 Pnormal Tfeature request Trac import core libraries
- 9
updated Jun 18, 2020
Expose the SNat type and the natSing method

#15183 · opened May 25, 2018 by David Feuer 5 Pnormal Tfeature request Trac import core libraries
- 10
updated Apr 09, 2021
T4442 fails on i386

#15184 · opened May 25, 2018 by Ömer Sinan Ağacan 8.10.2 5 Pnormal Tbug Trac import broken test
- 7
updated Jan 21, 2020
disable haddock disables building of manuals

#15190 · opened May 28, 2018 by Jens Petersen 5 Pnormal Tbug Trac import
- 5
updated Jan 23, 2020
Deriving via DeriveAnyClass not behaving the same as an emply instance declaration

#15191 · opened May 28, 2018 by Darwin226 5 Pnormal Tbug Trac import
- 4
updated Jan 23, 2020
Refactor of Coercion

#15192 · opened May 28, 2018 by Ningning Xie 8.6.1 5 Pnormal Ttask Trac import
- 25
updated Jul 07, 2019
Consider a QSem variant that can hold back resources

#15194 · opened May 29, 2018 by David Feuer 5 Pnormal Tfeature request Trac import core libraries
- 2
updated Jan 23, 2020
Build fails on Debian armhf (armv7l-unknown-linux-gnueabihf)

#15199 · opened May 30, 2018 by clint 8.4.4 5 Pnormal Tbug Trac import
- 4
updated Jul 07, 2019
RFC: export WordPtr from Data.Word and IntPtr from Data.Int rather than only from Foreign.Ptr

#15200 · opened May 30, 2018 by Carter Schonwald 5 Pnormal Tbug Trac import
- 6
updated Jan 23, 2020
Wrong location reported for kind error

#15203 · opened May 31, 2018 by Richard Eisenberg 5 Pnormal Tbug Trac import
- 3
updated Jan 23, 2020
Unnecessary equality superclass

#15205 · opened May 31, 2018 by Simon Peyton Jones 5 Pnormal Tbug Trac import
- 2
updated Jan 23, 2020
Use ByteStrings for strings that don't use FastString's features

#15210 · opened Jun 01, 2018 by Simon Jakobi 5 Pnormal Ttask Trac import compiler perf faststring strings
- 3
updated Mar 24, 2020
exprFreeVars does not include type variables

#15211 · opened Jun 01, 2018 by Richard Eisenberg 5 Pnormal Tbug Trac import
- 7
updated Jan 23, 2020
ScopedTypeVariables binds a non-existent variable

#15220 · opened Jun 03, 2018 by Richard Eisenberg 5 Pnormal Tbug Trac import
- 15
updated Jan 23, 2020
Validate failures in sanity way

#15241 · opened Jun 07, 2018 by Ömer Sinan Ağacan 5 Pnormal RTS Tbug Trac import
- 16
updated Jan 23, 2020
Coercions from plugins cannot be stopped from floating out

#15248 · opened Jun 08, 2018 by Richard Eisenberg 5 Pnormal Tbug Trac import plugins typechecker plugins
- 6
updated Jun 15, 2020
Add support for cmpeq and cmpgt MMX intrinsics

#15249 · opened Jun 09, 2018 by John Ky 5 Pnormal SIMD Tfeature request Ttask Trac import
- 6
updated Jan 23, 2020
Add support for _mm512_shuffle_epi8 intrinsic

#15250 · opened Jun 09, 2018 by John Ky 5 Pnormal SIMD Tfeature request Trac import
- 5
updated Jan 23, 2020
Add support for _mm_shuffle_pi8 intrinsic

#15251 · opened Jun 09, 2018 by John Ky 5 Pnormal SIMD Tfeature request Trac import
- 2
updated Jan 23, 2020
syn_arg_wraps and syn_res_wrap are only populated after typechecking

#15252 · opened Jun 09, 2018 by Matthew Pickering 5 Pnormal Tbug TTG Trac import newcomer
- 5
updated Jan 23, 2020
Add support for type-level integers

#15253 · opened Jun 10, 2018 by chessai 5 Pnormal Tfeature request Trac import core libraries
- 3
updated Jan 23, 2020
GHCi check .ghci permission on WSL(Linux on Windows)

#15256 · opened Jun 11, 2018 by yongjoon 8.4.4 5 GHCi Pnormal Tbug Trac import
- 0
updated Jul 07, 2019
Broken symlinks in lndir build tree

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

#15258 · opened Jun 11, 2018 by Andreas Klebinger 5 Pnormal Ttask Trac import code generation
- 4
updated Feb 26, 2021
Extend TVar/MVar to N capacity / Add primitive channel type

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

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

#15272 · opened Jun 14, 2018 by Tobias Dammers 5 Pnormal Tfeature request Trac import
- 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 Tbug Trac import linking
- 21
updated Feb 15, 2021
Locale issue in the testsuite

#15283 · opened Jun 17, 2018 by Sylvain Henry 5 Pnormal Ttask Trac import 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 Tbug Trac import
- 6
updated Jul 07, 2019
Incorrect SCC name parsing according to user manual

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

#15295 · opened Jun 20, 2018 by Simon Jakobi 5 Pnormal Tbug Trac import 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 Tfeature request Trac import
- 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 Tfeature request Trac import
- 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 Tbug Trac import compiler perf inlining
- 29
updated Apr 09, 2021
mkLHsOpTy is discarding API Annotations

#15309 · opened Jun 24, 2018 by Alan Zimmerman 5 API annotations Pnormal Tbug Trac import
- 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 Tfeature request Trac import generics typechecker
- 3
updated Jul 07, 2019
getChanContents exception behavior seems a bit odd

#15312 · opened Jun 26, 2018 by David Feuer 5 Pnormal Tbug Trac import 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 Tbug Trac import
- 6
updated Aug 07, 2020
Save the types in the typechecked syntax tree

#15320 · opened Jun 28, 2018 by nboldi 5 Pnormal Tfeature request Trac import 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 Tbug Trac import Typeable 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 Tfeature request Trac import 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 Tfeature request Trac import core libraries
- 3
updated Jan 23, 2020
cpphs: internal error: evacuate(static): strange closure type 8440

#15328 · opened Jun 30, 2018 by cnmne 5 Pnormal Tbug Trac import 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 Tbug Trac import 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 Tbug Trac import incorrect runtime result
- 15
updated Jun 12, 2020
Investigate using Ward on RTS

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

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

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

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

#15356 · opened Jul 08, 2018 by Richard Eisenberg 5 Pnormal Tbug TemplateHaskell Trac import
- 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 Tfeature request Trac import UnboxedSums UnboxedTuples
- 3
updated Jan 23, 2021
Replace the atomicModifyMutVar# primop

#15364 · opened Jul 11, 2018 by David Feuer 9.2.1 5 Pnormal RTS Tfeature request Trac import 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 Tbug Trac import
- 4
updated Jan 23, 2021