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Glasgow Haskell Compiler
GHC
Issues
Open
6
Closed
4
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10
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Blocking
Bottom dictionaries can be derived with QuantifiedConstraints, UndecidableInstances and UndecidableSuperClasses
#19690
· created
Apr 12, 2021
by
aadaa-fgtaa
P
normal
QuantifiedConstraints
T
bug
UndecidableSuperClasses
typechecker
5
updated
Apr 16, 2021
The `solveWanteds` error message is pretty awful.
#19627
· created
Apr 01, 2021
by
Edward Kmett
P
normal
T
bug
UndecidableSuperClasses
error messages
6
updated
Aug 13, 2021
8.10: Overlapping instances claimed where there are none (or crash in 8.8)
#18129
· created
May 02, 2020
by
Serge Kosyrev
GADTs
OverlappingInstances
P
normal
T
bug
TypeFamilies
UndecidableSuperClasses
UndecideableInstances
1
3
updated
Jul 01, 2020
UndecidableSuperClasses - Could not deduce (Category d)
#14010
· created
Jul 22, 2017
by
Vladislav Zavialov
5
P
normal
T
bug
Trac import
UndecidableSuperClasses
5
updated
Jul 07, 2019
Can't solve constraints with UndecidableSuperClasses but can infer kind (+ undesired order of kinds)
#12131
· created
May 29, 2016
by
Icelandjack
5
P
normal
T
bug
Trac import
UndecidableSuperClasses
typechecker
7
updated
Jul 07, 2019
Infinite Loop when mixing UndecidableSuperClasses and the class/instance constraint synonym trick.
#11523
· created
Feb 01, 2016
by
Edward Kmett
8.4.1
7
P
high
T
bug
Trac import
UndecidableSuperClasses
typechecker
30
updated
Jul 07, 2019