Issues · Glasgow Haskell Compiler / GHC · GitLab

Data races in itimer_thread_func reported by ThreadSanitizer

#16150 · created Jan 08, 2019 by gnezdo 8.6.4 5 Pnormal RTS Tbug Trac import incorrect runtime result
- CLOSED
- 4
updated Aug 20, 2019
Strictness is not preserved under -O1

#16197 · created Jan 17, 2019 by Alex Lang 8.8.1 5 Pnormal Tbug Trac import incorrect runtime result
- CLOSED
- 13
updated Sep 21, 2021
PPC NCG: C calling convention violated for integers smaller than word size

#16222 · created Jan 23, 2019 by Peter Trommler 8.10.1 5 FFI Pnormal PowerPC Tbug Trac import incorrect runtime result
- CLOSED
- 3
- 2
updated Jul 07, 2019
PowerPC Big-Endian: ArithInt16, ArithInt8, ArithWord16, and ArithWord8 fail

#16258 · created Jan 30, 2019 by Peter Trommler 8.10.1 5 Pnormal Tbug Trac import incorrect runtime result
- CLOSED
- 3
- 5
updated Jul 07, 2019
Fix for #14619 is wrong

#16514 · created Apr 01, 2019 by Duane Ryrag 8.6.5 8 Phigh Tbug Windows code generation incorrect runtime result
- CLOSED
- 6
- 7
updated Feb 25, 2020
KnownNat: result changes depending on optimizations

#16586 · created Apr 17, 2019 by Bodigrim 8.8.1 10 Phighest Tbug incorrect runtime result specialisation
- CLOSED
- 7
- 23
updated Oct 21, 2021
On x86_64, `castFloatToWord32` can generate bad, signed `Word32`s

#16617 · created May 01, 2019 by KevinBuhr Tbug incorrect runtime result
- CLOSED
- 3
- 1
updated May 24, 2019
-fno-omit-yields doesn't work at -O0

#16713 · created May 30, 2019 by roland code generation incorrect runtime result
- 1
updated Jun 05, 2019
Use explicit lazy binding around undefined in inlinable functions

#16810 · created Jun 13, 2019 by kazu-yamamoto 8.9 7 Phigh Strict Tbug incorrect runtime result
- CLOSED
- 1
- 15
updated Oct 04, 2021
Optimizer produces Core with an infinite <<loop>> v2

#17151 · created Sep 04, 2019 by Alexey Kuleshevich 8.10.2 Phigh Tbug incorrect runtime result simplifier
- CLOSED
- 6
updated Apr 07, 2021
Unsound optimization with -O in ghc 8.4 and 8.6 when using unsafeCoerce (produced by Agda)

#17206 · created Sep 18, 2019 by Andreas Abel Tbug incorrect runtime result simplifier
- 5
updated Sep 19, 2019
Program hangs on ppc64el

#17285 · created Oct 01, 2019 by Ilias Tsitsimpis PowerPC Tbug incorrect runtime result info needed
- 8
updated Nov 03, 2019
Rounding always throws an arithmetic underflow exception when used with a ratio of natural numbers

#17303 · created Oct 04, 2019 by taylorfausak 8.10.1 Phigh Tbug core libraries incorrect runtime result
- CLOSED
- 0
updated Dec 06, 2019
Data.Fixed.mod' sometimes produces nonsensical results

#17383 · created Oct 21, 2019 by Roman Cheplyaka 8.10.1 Phigh Tbug core libraries incorrect runtime result
- CLOSED
- 1
updated Oct 31, 2019
surprising SIGQUIT behavior "This build does not support backtraces."

#17451 · created Nov 07, 2019 by joeyh Pnormal RTS Tbug incorrect runtime result
- 3
updated Nov 08, 2019
Runtime loop when using eqT

#17458 · created Nov 09, 2019 by Max Harms Pnormal QuantifiedConstraints Tbug Typeable incorrect runtime result
- CLOSED
- 11
updated Nov 13, 2019
text has different runtime behavior between GHC 8.6.5 and 8.8.1

#17678 · created Jan 13, 2020 by Ryan Scott Tbug incorrect runtime result
- CLOSED
- 4
updated Jan 13, 2020
ParallelListComp semantics differs from the documented one

#17694 · created Jan 16, 2020 by Roman Cheplyaka Pnormal Tbug incorrect runtime result
- 6
updated Jan 17, 2020
OFD locking breaks on 32-bit glibc

#17950 · created Mar 23, 2020 by Ben Gamari 8.10.2 Phigh Tbug core libraries incorrect runtime result
- CLOSED
- 1
- 3
updated May 04, 2021
Global variables in GHC.IO.Encoding have inappropriate inlinings

#17970 · created Mar 28, 2020 by Ben Gamari 8.10.2 Phigh Tbug core libraries incorrect runtime result
- CLOSED
- 5
- 2
updated Mar 31, 2020
DeriveGeneric gets a wrong infix constructor associativity when type is declared in a different module

#18101 · created Apr 26, 2020 by Xia Li-yao Pnormal Tbug deriving generics incorrect runtime result
- 0
updated May 10, 2020
Eta-expansion of a left-section

#18151 · created May 06, 2020 by Richard Eisenberg 9.0.1 Pnormal Tbug incorrect runtime result report impact typechecker
- CLOSED
- 1
- 8
updated Jan 12, 2021
Closure size functions will return incorrect for closures with static links

#18269 · created May 31, 2020 by Ömer Sinan Ağacan Pnormal Tbug incorrect runtime result
- 0
updated Jun 02, 2020
`BlockedIndefinitelyOnMVar` is thrown to non-blocked threads

#18370 · created Jun 21, 2020 by Ole RTS Tbug concurrency incorrect runtime result
- 5
updated Jun 24, 2020
withArgs and withProgName permanently modify argv[0]

#18418 · created Jul 03, 2020 by Andreas Herrmann Tbug incorrect runtime result
- 1
updated Jul 14, 2020
Unboxed types in GHCi on big-endian platforms

#18431 · created Jul 07, 2020 by Stefan Schulze Frielinghaus Tbug incorrect runtime result
- 25
updated Sep 30, 2021
GHC does not respect semantics of bang patterns

#18444 · created Jul 13, 2020 by Richard Eisenberg BangPatterns Pnormal Tbug incorrect runtime result
- 1
- 1
updated Jul 27, 2020
targetByteOrder on s390x

#18445 · created Jul 14, 2020 by Andrew Martin 8.10.6 Pnormal Tbug incorrect runtime result s390x
- CLOSED
- 9
updated Sep 09, 2021
Optimisation removes effectful computation.

#18527 · created Aug 03, 2020 by Tobias Decking Phigh Tbug Windows code generation incorrect runtime result
- CLOSED
- 4
- 13
updated Aug 16, 2020
GHC.HsToCore.Coverage doesn't take expressions in View Patterns into account

#18590 · created Aug 19, 2020 by Zubin HPC Pnormal Tbug incorrect runtime result
- 0
updated Sep 30, 2020
Bignum: natural subtraction sometimes wrong

#18604 · created Aug 24, 2020 by Sylvain Henry Phighest Tbug ghc-bignum incorrect runtime result
- CLOSED
- 1
updated Oct 12, 2020
Data.Bits.shiftL should generate overflow exception for Integer operand

#18619 · created Aug 29, 2020 by Sergei Trofimovich Pnormal Tbug core libraries incorrect runtime result
- 3
updated Jan 24, 2021
Global ImplicitParams technique doesn't work with optimizations enabled

#18627 · created Aug 31, 2020 by Dmitrii Kovanikov ImplicitParams Tbug incorrect runtime result needs triage
- CLOSED
- 5
- 6
updated Oct 13, 2020
Strange behavior when optimization is turned on, with GHC >= 8.2.2

#18829 · created Oct 11, 2020 by Vanessa McHale Phigh Tbug incorrect runtime result
- 8
updated Nov 09, 2020
Reversed profile stack

#18868 · created Oct 20, 2020 by Douglas RAILLARD Pnormal Tbug incorrect runtime result profiling
- 3
updated Oct 20, 2020
Fix Alternative instance for IO

#18871 · created Oct 21, 2020 by Isaac Berger Tbug core libraries incorrect runtime result
- 9
updated Jul 09, 2021
T13330 fails sporatically on Windows

#18876 · created Oct 22, 2020 by Ben Gamari Pnormal Tbug Windows incorrect runtime result
- 0
updated Oct 22, 2020
Segfault on s390x due to missing sign/zero extend

#19023 · created Dec 03, 2020 by Stefan Schulze Frielinghaus LLVM backend Tbug incorrect runtime result s390x
- CLOSED
- 8
- 4
updated Jan 26, 2021
Strange behavior when using -O

#19053 · created Dec 12, 2020 by Arthur Khashaev Pnormal Tbug incorrect runtime result simplifier
- 1
- 2
updated Dec 15, 2020
CPP def name typo: THREADEDED_RTS

#19057 · created Dec 13, 2020 by Csaba Hruska RTS Tbug incorrect runtime result
- CLOSED
- 3
- 2
updated Dec 19, 2020
Restarting event log results in invalid output

#19078 · created Dec 16, 2020 by Ben Gamari RTS Tbug eventlog incorrect runtime result
- CLOSED
- 1
- 0
updated Mar 05, 2021
arithmetic sequence discrepancy

#19080 · created Dec 17, 2020 by DOUGLAS MCILROY Phigh Tbug core libraries incorrect runtime result
- CLOSED
- 6
updated Dec 17, 2020
Error in accounting for GC cpu time in sequential collections

#19147 · created Jan 01, 2021 by Douglas Wilson Pnormal RTS Tbug incorrect runtime result
- CLOSED
- 1
updated May 04, 2021
ghci's :type still ignores ill-kinded type application with -fdefer-type-errors

#19158 · created Jan 03, 2021 by Jakob Brünker GHCi Pnormal Tbug deferred type errors incorrect runtime result
- CLOSED
- 4
- 2
updated Aug 02, 2021
Natural shiftL 0 65 not equal to 0

#19170 · created Jan 05, 2021 by Christiaan Baaij 9.0.1 Phighest Tbug ghc-bignum incorrect runtime result
- CLOSED
- 5
- 1
updated Jan 29, 2021
Type literals in Reflection of type constructor kinds leads to SafeHaskell violation

#19288 · created Jan 31, 2021 by Kyle Ehrlich 9.0.2 Tbug Typeable incorrect runtime result needs triage
- CLOSED
- 3
- 6
updated Feb 05, 2021
Optimisations cause incorrect runtime result in Integer calculation

#19345 · created Feb 10, 2021 by sheaf 9.0.1 Phighest Tbug backport ghc-bignum incorrect runtime result
- CLOSED
- 9
updated Mar 10, 2021
Data.Complex doesn't consistently distinguish -0.0

#19369 · created Feb 14, 2021 by JKTKops Pnormal Tbug core libraries incorrect runtime result numerics
- 2
updated Feb 21, 2021
fromIntegral (2^64 :: Integer) == (0 :: Natural)

#19411 · created Feb 20, 2021 by Bodigrim 9.0.2 Phighest Tbug ghc-bignum incorrect runtime result
- CLOSED
- 11
updated Mar 04, 2021
unsafePerformIO/NOINLINE tricks no longer work

#19413 · created Feb 21, 2021 by Neil Mitchell Phighest Tbug incorrect runtime result
- CLOSED
- 9
updated Jun 29, 2021
Eventlog flushing in non-threaded is broken

#19436 · created Feb 25, 2021 by Matthew Pickering Pnormal RTS Tbug eventlog incorrect runtime result
- CLOSED
- 2
- 0
updated Mar 01, 2021
PowerPC: IntegerToFloat test failure

#19563 · created Mar 19, 2021 by Peter Trommler NCG backend PowerPC Tbug incorrect runtime result needs triage
- CLOSED
- 2
- 5
updated Mar 23, 2021
Floating Point regression in NoFib's `imaginary/integrate` benchmark

#19569 · created Mar 20, 2021 by Sebastian Graf 9.2.1 Phighest Tbug incorrect runtime result numerics
- 9
updated Nov 07, 2021
case over signum of Integer is incorrect in GHC 9.2

#19680 · created Apr 09, 2021 by Bodigrim 9.2.1 Phighest Tbug ghc-bignum incorrect runtime result
- CLOSED
- 4
- 12
updated May 13, 2021
Non-reproducible failure in RestartEventLogging test in `threaded1` way.

#19724 · created Apr 21, 2021 by vdukhovni RTS Tbug eventlog incorrect runtime result
- 0
updated Apr 22, 2021
TH recompilation check is defeated by packages

#19771 · created Apr 30, 2021 by Matthew Pickering incorrect runtime result recompilation checking
- CLOSED
- 2
- 1
- 5
updated Jun 08, 2021
Debug.Trace.trace optimized away when throwing exceptions, starting with GHC 8.8

#19841 · created May 14, 2021 by Andreas Abel CSE Pnormal Tbug demand analysis exceptions incorrect runtime result simplifier
- 11
updated Nov 09, 2021
PPC NCG: Unsigned compare with 16-bit constants broken

#19852 · created May 16, 2021 by Peter Trommler Phigh PowerPC Tbug incorrect runtime result
- CLOSED
- 7
- 2
updated Oct 11, 2021
Unsound optimization with `error`, introduced in GHC 8.2

#19917 · created May 30, 2021 by Andreas Abel Phigh demand analysis incorrect runtime result simplifier
- 25
updated Nov 24, 2021
getExecutablePath returns ld loader path

#19935 · created Jun 02, 2021 by Daneel S. Yaitskov Pnormal Tbug core libraries incorrect runtime result
- 1
updated Jun 04, 2021
Mysterious issue with bytestring "LazyWord8.fromString literal" test

#19976 · created Jun 10, 2021 by Bodigrim 9.0.2 Phighest Tbug core libraries incorrect runtime result
- CLOSED
- 6
- 3
- 7
updated Sep 21, 2021
Rule "fromIntegral/Int->Natural" is inconsistent

#20066 · created Jul 01, 2021 by Sylvain Henry Phigh incorrect runtime result
- CLOSED
- 4
- 1
updated Sep 21, 2021
Unicode strings are mangled in GHC 9.0.1

#20191 · created Aug 01, 2021 by Bodigrim 9.0.2 Phigh Tbug core libraries incorrect runtime result
- CLOSED
- 1
updated Aug 03, 2021
Odd interaction between unsafePerformIO and threadDelay

#20317 · created Aug 31, 2021 by David Feuer 9.4.1 RTS concurrency exceptions incorrect runtime result
- 4
updated Sep 01, 2021
GHC.ByteOrder is broken

#20338 · created Sep 06, 2021 by Alexey Kuleshevich 8.10.1 Phigh Tbug cpp incorrect runtime result
- CLOSED
- 2
- 11
updated Sep 09, 2021
Serious Data.Data dataTypeName breakage

#20371 · created Sep 14, 2021 by David Feuer Tbug core libraries deriving generics incorrect runtime result
- CLOSED
- 8
- 8
updated Sep 19, 2021
Infinite loop for Alternative instance for Maybe

#20392 · created Sep 20, 2021 by Xwtek Pnormal Tbug core libraries incorrect runtime result
- CLOSED
- 2
updated Sep 23, 2021
real number floating point function errors (Windows only)

#20424 · created Sep 28, 2021 by davjam Phigh Tbug Windows incorrect runtime result numerics upstream
- 1
- 17
updated Nov 05, 2021
complex number function errors (all platforms)

#20425 · created Sep 28, 2021 by davjam 9.4.1 Phigh Tbug incorrect runtime result numerics
- 1
- 17
updated Nov 01, 2021
Ticky's ticker registration is racy

#20451 · created Sep 30, 2021 by Ben Gamari Pnormal Tbug incorrect runtime result ticky ticky
- CLOSED
- 2
- 1
updated Oct 05, 2021
TSAN failures in exitTicker

#20464 · created Oct 03, 2021 by Ben Gamari Phigh RTS Tbug incorrect runtime result
- 2
updated Oct 05, 2021
Instances become invisible across a component boundary

#20529 · created Oct 19, 2021 by parsonsmatt OverlappingInstances Phigh Tbug TemplateHaskell incorrect runtime result program incorrectly accepted
- 9
updated Nov 11, 2021
tf-random's documentation fails to build with GHC 9.2.1's haddock on aarch64-linux

#20594 · created Nov 01, 2021 by sterni NCG backend Phighest Tbug incorrect runtime result
- 3
updated Nov 05, 2021
Sub-word right-arithmetic-shifts appear to be wrong on x86

#20626 · created Nov 05, 2021 by Ben Gamari 9.0.2 NCG backend Phighest Tbug incorrect runtime result
- 3
updated Nov 27, 2021
Inconsistent treatment of signedness of Cmm literals

#20634 · created Nov 07, 2021 by Ben Gamari Phigh Tbug code generation incorrect runtime result
- 3
updated Nov 25, 2021
LLVM backend miscompilation

#20637 · created Nov 07, 2021 by Ben Gamari LLVM backend Phigh Tbug incorrect runtime result
- 6
updated Nov 27, 2021
Miscompilation of signed load by ARMv8 NCG

#20638 · created Nov 08, 2021 by Ben Gamari ARM Phigh Tbug aarch64 incorrect runtime result
- 4
updated Nov 27, 2021
UTF-8 decoding doesn't work correctly on GHC 9.2.1+AArch64 NCG

#20640 · created Nov 08, 2021 by arata, mizuki 9.2.2 NCG backend Phigh Tbug aarch64 incorrect runtime result
- 5
updated Nov 10, 2021
Signed arithmetic miscompiled on AArch64

#20644 · created Nov 08, 2021 by Ben Gamari 9.2.2 NCG backend Phigh Tbug aarch64 incorrect runtime result
- 8
updated Nov 27, 2021
LLVM backend miscompiles pext and pdep

#20645 · created Nov 08, 2021 by Ben Gamari LLVM backend Phigh Tbug incorrect runtime result
- 8
updated Nov 25, 2021
Broken C Calls on Darwin/AArch64

#20646 · created Nov 08, 2021 by Ben Gamari LLVM backend Phigh aarch64 aarch64-darwin incorrect runtime result
- CLOSED
- 4
updated Nov 10, 2021
GHCi 9.2.1 Unicode input broken on macOS Arm64

#20659 · created Nov 10, 2021 by Dakotah Lambert 9.2.2 Phigh Tbug aarch64 incorrect runtime result
- CLOSED
- 1
updated Nov 10, 2021
C backend handles signedness incorrectly

#20745 · created Nov 25, 2021 by Ben Gamari Phigh Tbug incorrect runtime result unregisterised
- 0
updated Nov 27, 2021

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