Issues · Glasgow Haskell Compiler / GHC

New issue

TypeFamilies painfully slow

#8095 · opened Jul 27, 2013 by MikeIzbicki 9.2.1 7 Phigh Trac import bug compiler perf typechecker
- 1
- 3
- 77
updated Jan 23, 2021
Add fudge-factor for performance tests run on non-validate builds

#8096 · opened Jul 27, 2013 by Edward Z. Yang 5 Pnormal Trac import task
- 2
updated Jul 07, 2019
Alternate syntax for indicating when a function is "fully applied" for purposes of inlining

#8099 · opened Jul 27, 2013 by jberryman 5 Pnormal Trac import feature request
- 19
updated Jul 07, 2019
need types to express constant argument for primop correctness

#8107 · opened Aug 01, 2013 by Carter Schonwald 8.0.1 5 Pnormal Trac import bug feature request
- 12
updated Jul 07, 2019
Type family patterns should support as-patterns.

#8109 · opened Aug 01, 2013 by carlhowells 5 Pnormal Trac import feature request
- 6
updated Jul 07, 2019
<stdout>: commitAndReleaseBuffer: invalid argument (invalid character)

#8118 · opened Aug 08, 2013 by guest 5 Pnormal Trac import bug runtime crash
- 2
- 26
updated Nov 28, 2020
GHCi warns about -eventlog even though it's sometimes necessary

#8123 · opened Aug 12, 2013 by takano-akio 5 GHCi Pnormal Trac import bug error messages eventlog
- 4
updated Jul 07, 2019
iOS patch no 19: Linking

#8127 · opened Aug 13, 2013 by StephenBlackheath 5 Pnormal Trac import broken test bug newcomer
- 18
updated Jul 07, 2019
Interface hashes include time stamp of dependent files (UsageFile mtime)

#8144 · opened Aug 20, 2013 by Niklas Hambüchen 8.0.1 5 Pnormal Trac import bug compiler perf testsuite
- 32
updated Jul 07, 2019
Exponential behavior in instance resolution on fixpoint-of-sum

#8147 · opened Aug 21, 2013 by jkoppel 5 Pnormal Trac import bug compiler perf runtime perf
- 7
updated Jul 07, 2019
Foreign export requires redundant type signature

#8150 · opened Aug 21, 2013 by evincarofautumn 5 Pnormal Trac import bug error messages
- 2
updated Jul 07, 2019
ghc-7.4.2 on OpenIndiana (Solaris) createSubprocess fails

#8151 · opened Aug 21, 2013 by troydm 5 Pnormal Trac import bug runtime perf
- 8
updated Jul 07, 2019
Uses of Binary decode should have a proper error message

#8159 · opened Aug 23, 2013 by Niklas Hambüchen 3 Plow Trac import bug
- 2
updated Jul 07, 2019
Extending ExtendedDefaultRules

#8171 · opened Aug 24, 2013 by Edward Kmett 5 Pnormal Trac import feature request
- 13
updated Jul 07, 2019
GHC uses nub

#8173 · opened Aug 26, 2013 by Niklas Hambüchen 3 Plow Trac import bug compiler perf
- 21
updated Nov 21, 2019
Roles for type families

#8177 · opened Aug 27, 2013 by Simon Peyton Jones ⊥ 5 Pnormal Trac import TypeFamilies bug roles
- 1
- 43
updated Oct 21, 2020
Different floating point results with -msse2 on 32bit Linux

#8195 · opened Aug 29, 2013 by Jan Stolarek 3 NCG backend Plow Trac import bug
- 4
updated Jul 07, 2019
One-shot mode is buggy w.r.t. hs-boot files

#8198 · opened Aug 30, 2013 by parcs 8.0.1 5 Pnormal Trac import bug driver error messages
- 11
updated Jul 07, 2019
Get rid of HEAP_ALLOCED on Windows (and other non-Linux platforms)

#8199 · opened Aug 30, 2013 by Edward Z. Yang 8.0.1 3 Plow Trac import feature request
- 55
updated Jul 07, 2019
Add support for Portable Native Client

#8206 · opened Aug 31, 2013 by guest 5 Pnormal Trac import feature request
- 7
updated Jul 07, 2019
ghc -c recompiles TH every time while --make doesn't

#8211 · opened Sep 02, 2013 by Niklas Hambüchen 5 Pnormal TemplateHaskell Trac import bug compiler perf recompilation checking
- 0
updated Jul 07, 2019
Macros / functions for source location

#8220 · opened Sep 03, 2013 by wojteknar 5 Pnormal Trac import feature request
- 7
updated Jul 07, 2019
GHC built under Windows does not generate dyn_hi files

#8228 · opened Sep 05, 2013 by Edward Z. Yang 7 Phigh Trac import Windows bug dynamic-too linking
- 20
updated Oct 13, 2020
Implement unloading of shared libraries

#8238 · opened Sep 06, 2013 by Simon Marlow 8.0.1 5 Pnormal RTS Trac import linking task
- 8
updated Jul 07, 2019
prefetch# isn't as general as it should be (currently the general version isn't type safe)

#8252 · opened Sep 07, 2013 by Carter Schonwald 8.0.1 5 Pnormal Trac import feature request
- 2
updated Jul 07, 2019
getTokenStream fails for source using cpp

#8265 · opened Sep 10, 2013 by Alan Zimmerman 5 GHC API Pnormal Trac import bug compiler crash
- 6
updated Jul 07, 2019
Consider using native stack pointer register for STG stack

#8272 · opened Sep 12, 2013 by Carter Schonwald 5 Pnormal Trac import task
- 23
updated Apr 22, 2020
bad alignment in code gen yields substantial perf issue

#8279 · opened Sep 12, 2013 by Carter Schonwald 8.0.1 5 Pnormal Trac import bug runtime perf
- 29
updated Jul 07, 2019
The impossible happened: primRepToFFIType

#8281 · opened Sep 13, 2013 by tibbe 8.6.1 5 Pnormal Trac import bug compiler crash
- 35
updated Jul 07, 2019
unexpected behavior with encodeFloat on large inputs

#8285 · opened Sep 13, 2013 by Carter Schonwald 8.0.1 5 Pnormal Trac import bug incorrect runtime result
- 7
updated Jul 07, 2019
exploring calling convention changes and related engineering for 7.10

#8287 · opened Sep 13, 2013 by Carter Schonwald ⊥ 5 Pnormal Trac import task
- 17
updated Jul 07, 2019
add idris style EDSL support for deep embedding lambdas

#8288 · opened Sep 13, 2013 by Carter Schonwald 8.0.1 5 Pnormal Trac import feature request
- 9
updated Jul 07, 2019
lookupSymbol API is unsafe

#8290 · opened Sep 14, 2013 by Edward Z. Yang 3 Plow RTS Trac import documentation task
- 3
updated Jul 07, 2019
user001 spuriously fails if getGroupEntryForID correctly fails

#8293 · opened Sep 14, 2013 by Edward Z. Yang 0 Plow Trac import bug core libraries external-unix incorrect runtime result
- 2
updated Jul 07, 2019
Add richer data model address arithmetic: AddrDiff and AddrInt (ie d Int_ptr_diff and Int_ptr_size)

#8299 · opened Sep 14, 2013 by Carter Schonwald 8.2.1 5 Pnormal Trac import feature request
- 9
updated Jul 07, 2019
defer StackOverflow exceptions (rather than dropping them) when exceptions are masked

#8303 · opened Sep 15, 2013 by rwbarton 8.0.1 3 Plow RTS Trac import bug
- 20
updated Jul 07, 2019
more lenient operator sections (RelaxedSections extension)

#8304 · opened Sep 15, 2013 by aavogt 0 Plow Trac import feature request parser
- 3
updated Jul 07, 2019
suboptimal code generated for even :: Int -> Bool by NCG (x86, x86_64)

#8311 · opened Sep 16, 2013 by rwbarton 5 NCG backend Pnormal Trac import feature request
- 6
updated Jul 07, 2019
Poor performance of higher-order functions with unboxing

#8313 · opened Sep 17, 2013 by dolio ⊥ 3 Plow Trac import runtime perf task
- 6
updated Jul 07, 2019
Improve specialized Hoopl module

#8315 · opened Sep 17, 2013 by Jan Stolarek 3 Plow Trac import task
- 0
updated Jul 07, 2019
GHCi debugger panics when trying force a certain variable

#8316 · opened Sep 17, 2013 by guest ⊥ 5 GHCi Pnormal Trac import broken test bug newcomer
- 22
updated Jul 07, 2019
Optimize tagToEnum# at Core level

#8317 · opened Sep 17, 2013 by Jan Stolarek 5 Pnormal Trac import task
- 4
updated May 02, 2020
GHC does not infer type of `tagToEnum#` expression

#8318 · opened Sep 17, 2013 by Jan Stolarek 5 Pnormal Trac import bug
- 3
updated Jul 07, 2019
Simplifier ticks exhausted (need -fsimpl-tick-factor=955)

#8319 · opened Sep 17, 2013 by ruudkoot 5 Pnormal Trac import bug compiler crash
- 5
updated Jul 07, 2019
explore ways to possibly use more tag bits in x86_64 pointers

#8323 · opened Sep 17, 2013 by Carter Schonwald 8.0.1 5 Pnormal Trac import task
- 5
updated Jul 07, 2019
Pattern guards in anonymous functions

#8325 · opened Sep 18, 2013 by mcollis 5 Pnormal Trac import feature request
- 5
updated Jul 07, 2019
Place heap checks common in case alternatives before the case

#8326 · opened Sep 18, 2013 by Jan Stolarek 5 Pnormal Trac import task
- 44
updated May 02, 2020
Cmm sinking does not eliminate dead code in loops

#8327 · opened Sep 18, 2013 by Jan Stolarek 5 Pnormal Trac import bug
- 2
updated Jul 07, 2019
Sinking pass could optimize some assignments better

#8336 · opened Sep 20, 2013 by Jan Stolarek 5 Pnormal Trac import bug runtime perf
- 2
updated Jul 07, 2019
Incoherent instances without -XIncoherentInstances

#8338 · opened Sep 20, 2013 by Richard Eisenberg 5 Pnormal Trac import bug
- 7
updated Jul 07, 2019
Rank 1 type signature still requires RankNTypes

#8346 · opened Sep 23, 2013 by Tinctorius 5 Pnormal RankNTypes Trac import bug
- 4
updated May 05, 2020
Add INLINE (or at least INLINABLE) pragmas for methods of Ord in ghc-prim

#8354 · opened Sep 24, 2013 by guest 5 Pnormal Trac import core libraries feature request
- 6
updated Jul 07, 2019
Filesystem related tests failed on solaris (SmartOS)

#8362 · opened Sep 26, 2013 by leroux 8.0.1 5 Pnormal Trac import bug core libraries incorrect runtime result
- 10
updated Jul 07, 2019
Order matters for unused import warnings when reexporting identifiers

#8363 · opened Sep 26, 2013 by bergmark 5 Pnormal Trac import bug
- 3
updated Aug 13, 2019
equip GHC with an accurate internal model of floating point

#8364 · opened Sep 26, 2013 by Carter Schonwald 8.0.1 5 Pnormal Trac import feature request
- 5
updated Jul 07, 2019
enable -dcmm-lint by default for .cmm input files

#8372 · opened Sep 27, 2013 by rwbarton 5 Pnormal Trac import feature request
- 1
updated Jul 07, 2019
Cross-compiling from x86_64-unknown-linux-gnu to x86_64-sun-solaris2 with mkGmpConstants workaround fails to build objects for integer-gmp

#8378 · opened Sep 28, 2013 by AlainODea 5 Pnormal Trac import bug ghc build failure integer-gmp
- 5
updated Jul 07, 2019
forall on non-* types

#8388 · opened Sep 30, 2013 by Krzysztof Gogolewski 5 Pnormal Trac import bug typechecker
- 3
updated May 13, 2020
reify module list in TH

#8398 · opened Oct 02, 2013 by errge 8.0.1 5 Pnormal Trac import bug
- 8
updated Jul 07, 2019
Of Bird tacks and non-blank blank lines

#8399 · opened Oct 02, 2013 by Tinctorius 3 Plow Trac import bug
- 0
updated Jul 07, 2019
Migrate the RTS to use libuv (or libev, or libevent)

#8400 · opened Oct 03, 2013 by schyler 5 Pnormal RTS Trac import feature request
- 29
updated Jul 07, 2019
Default to turning on architecture specific optimizations in the codegen

#8404 · opened Oct 03, 2013 by tibbe 5 Pnormal Trac import bug
- 3
updated Sep 16, 2020
Spurious dynamic library dependencies

#8420 · opened Oct 08, 2013 by AndreasVoellmy 5 Pnormal Trac import bug
- 5
updated Jul 07, 2019
type nats solver is too weak!

#8422 · opened Oct 08, 2013 by Carter Schonwald 8.0.1 5 Pnormal Trac import bug type literals typechecker
- 7
updated Jul 07, 2019
Less conservative compatibility check for closed type families

#8423 · opened Oct 08, 2013 by Carter Schonwald ⊥ 5 Pnormal Trac import bug feature request typechecker
- 16
updated Jul 07, 2019
one-shot compilation + TH doesn't see instances that is seen in batch mode

#8426 · opened Oct 09, 2013 by errge 8.0.1 5 Pnormal TemplateHaskell Trac import bug
- 20
updated Jul 07, 2019
GHC.Base.{breakpoint, breakpointCond} do nothing

#8429 · opened Oct 10, 2013 by refold 8.0.1 5 Pnormal Trac import bug feature request
- 10
updated Jul 07, 2019
Allow family instances in an hs-boot file

#8441 · opened Oct 13, 2013 by Richard Eisenberg 5 Pnormal Trac import feature request hs-boot
- 9
updated Jan 13, 2020
A combination of type-level comparison and subtraction does not work for 0

#8447 · opened Oct 15, 2013 by nushio 3 Plow Trac import bug typechecker
- 4
updated Jul 07, 2019
-ffull-laziness does more harm than good

#8457 · opened Oct 18, 2013 by errge 8.0.1 5 Pnormal Trac import bug float-out
- 15
updated Nov 17, 2020
Annotation reification with types in TH

#8460 · opened Oct 19, 2013 by errge 8.0.1 5 Pnormal Trac import feature request
- 7
updated Jul 07, 2019
Allow inferring ambiguous types

#8477 · opened Oct 25, 2013 by aavogt 5 Pnormal Trac import feature request
- 8
updated Jul 07, 2019
Compile-time panic

#8484 · opened Oct 29, 2013 by Taymon 5 Pnormal Trac import bug compiler crash
- 4
updated Jul 07, 2019
Annotations should not distinguish type and value

#8488 · opened Oct 30, 2013 by Simon Peyton Jones 5 Pnormal Trac import bug
- 4
updated Jul 07, 2019
clean up dependency and usages handling in interface files

#8489 · opened Oct 30, 2013 by errge 8.0.1 5 Pnormal TemplateHaskell Trac import task
- 11
updated Jul 07, 2019
Provide minor GC residency estimates

#8504 · opened Nov 05, 2013 by Edward Z. Yang 0 Plow RTS Trac import feature request newcomer
- 1
updated Jul 07, 2019
Clear up what extensions are needed at a Template Haskell splice site

#8510 · opened Nov 08, 2013 by Simon Peyton Jones 5 Pnormal Trac import bug
- 4
updated Jul 07, 2019
Add (->) representation and the Invariant class to GHC.Generics

#8516 · opened Nov 09, 2013 by nfrisby 3 Plow Trac import feature request typechecker
- 14
updated Jul 07, 2019
blowup in space/time for type checking and object size for high arity tuples

#8523 · opened Nov 12, 2013 by Carter Schonwald 5 Pnormal Trac import bug compiler perf
- 7
updated Jul 07, 2019
GHC is inconsistent with the Haskell Report on which Unicode characters are allowed in string and character literals

#8524 · opened Nov 12, 2013 by oerjan@nvg.ntnu.no 3 Plow Trac import Unicode bug
- 7
updated Jul 07, 2019
The ordering of -I directives should be consistent with the ordering of -package directives

#8527 · opened Nov 13, 2013 by parcs 5 Pnormal Trac import bug package system
- 1
updated Jul 07, 2019
Invalid constructor names are accepted in data declarations

#8556 · opened Nov 22, 2013 by dolio 3 Plow Trac import bug
- 4
updated Jul 07, 2019
Derive some generic representation for GADTs

#8560 · opened Nov 23, 2013 by Carter Schonwald ⊥ 5 GADTs Pnormal Trac import bug
- 11
updated Jul 07, 2019
Building an empty module with profiling requires profiling libraries for integer-gmp

#8572 · opened Nov 28, 2013 by parcs 8.0.1 5 Pnormal Trac import bug integer-gmp typechecker
- 4
updated Jul 07, 2019
"evacuate: strange closure type 0" when creating large array

#8573 · opened Nov 29, 2013 by nad 5 Pnormal Trac import bug runtime crash
- 5
updated Jul 07, 2019
Improvements to SpinLock implementation

#8578 · opened Nov 30, 2013 by parcs 5 Pnormal RTS Trac import task
- 13
updated Jul 06, 2020
Pattern synonym used in an expression context could have different constraints to pattern used in a pattern context

#8581 · opened Dec 01, 2013 by cactus 8.0.1 5 Pnormal Trac import feature request
- 50
updated Jul 07, 2019
Associated pattern synonyms

#8583 · opened Dec 01, 2013 by cactus 5 Pnormal Trac import bug
- 17
updated Aug 24, 2020
Bad choice of loop breaker with INLINABLE/INLINE

#8589 · opened Dec 02, 2013 by NickSmallbone 5 Pnormal Trac import bug runtime perf
- 8
updated Jul 07, 2019
Git Hook script to prevent large binary blobs being checked in

#8597 · opened Dec 06, 2013 by Herbert Valerio Riedel 5 Pnormal Trac import infrastructure newcomer task
- 2
updated Jul 07, 2019
IO hack in demand analyzer gets in the way of CPR

#8598 · opened Dec 06, 2013 by Joachim Breitner 5 CPR analysis Pnormal Trac import task
- 12
updated Jul 07, 2019
Some stack/vmem limits (ulimit) combinations causing GHC to fail

#8604 · opened Dec 09, 2013 by clavin 5 Pnormal Trac import bug runtime crash
- 7
updated Sep 14, 2020
Alternative, guard-like syntax for view patterns

#8605 · opened Dec 10, 2013 by cactus 5 Pnormal Trac import feature request
- 1
updated Jul 07, 2019
Rebuild on a definition-based granularity

#8610 · opened Dec 11, 2013 by EyalLotem ⊥ 5 Pnormal Trac import feature request
- 0
updated Jul 07, 2019
Strange slowness when using async library with FFI callbacks

#8623 · opened Dec 22, 2013 by JohnWiegley 8.0.1 5 Pnormal RTS Trac import bug runtime perf
- 15
updated Jul 07, 2019
mallocForeignPtrBytes documentation unobvious regarding memory alignment

#8627 · opened Dec 24, 2013 by schernichkin 5 Pnormal Trac import bug core libraries documentation
- 4
updated Jul 07, 2019
Relax functional dependency coherence check ("liberal coverage condition")

#8634 · opened Dec 27, 2013 by danilo2 5 FunctionalDependencies Pnormal Trac import bug feature request
- 1
- 83
updated Nov 02, 2020
GHC optimisation flag ignored when importing a local module with derived type classes

#8635 · opened Dec 27, 2013 by Neil Mitchell 5 Pnormal Trac import bug
- 1
- 9
updated Mar 23, 2020
Silent name shadowing

#8643 · opened Dec 31, 2013 by mirpa 5 Pnormal Trac import feature request
- 7
updated Jul 07, 2019
Initialization of C statics broken in threaded runtime

#8648 · opened Jan 04, 2014 by edsko@edsko.net 5 Pnormal RTS Trac import bug
- 7
updated Jul 07, 2019