Issues · Glasgow Haskell Compiler / GHC · GitLab

surprising error message with bang pattern

#13600 · opened Apr 21, 2017 by Andrew U. Frank 8.8.1 5 BangPatterns Pnormal Trac import bug error messages newcomer
- 15
updated Dec 18, 2020
Erroneous "non-exhaustive pattern match" using nested GADT with strictness annotation

#15305 · opened Jun 23, 2018 by jkoppel 8.8.1 5 Pnormal Trac import bug error messages pattern match warnings typechecker
- CLOSED
- 15
updated Sep 22, 2020
Incorrect redudant imports warning

#13064 · opened Jan 04, 2017 by Oleg Grenrus 8.8.1 7 Phigh Trac import bug error messages
- CLOSED
- 51
updated Jul 07, 2019
Optional "-v" not allowed with :load in GHCi

#13862 · opened Jun 22, 2017 by vanto 8.8.1 5 GHCi Pnormal Trac import bug error messages
- CLOSED
- 9
updated Jul 07, 2019
Gruesome kind mismatch errors for associated data family instances

#14230 · opened Sep 14, 2017 by Ryan Scott 8.8.1 7 Phigh Trac import TypeInType bug error messages typechecker
- CLOSED
- 6
updated Jul 07, 2019
EmptyCase thinks pattern match involving type family is not exhaustive, when it actually is

#14813 · opened Feb 16, 2018 by Ryan Scott 8.8.1 5 Pnormal Trac import bug error messages pattern match warnings
- CLOSED
- 10
updated Jul 07, 2019
Error message prints invisible kind arguments in a visible matter

#15330 · opened Jul 02, 2018 by Ryan Scott 8.8.1 5 Pnormal Trac import TypeInType bug error messages typechecker
- CLOSED
- 7
updated Jul 07, 2019
Bogus "No instance" error when type families appear in kinds

#15515 · opened Aug 13, 2018 by Ryan Scott 8.8.1 5 Pnormal Trac import TypeFamilies TypeInType bug error messages typechecker
- CLOSED
- 7
updated Jul 07, 2019
nonVoid is too conservative w.r.t. strict argument types

#15584 · opened Aug 30, 2018 by Ryan Scott 8.8.1 5 Pnormal Trac import bug error messages pattern match warnings
- CLOSED
- 4
updated Jul 07, 2019
Wacky error message when RULE mentions out-of-scope variable

#15659 · opened Sep 19, 2018 by Ryan Scott 8.8.1 5 Pnormal Trac import bug error messages newcomer
- CLOSED
- 1
updated Jul 07, 2019
"-main-is" flag is broken for recent ghc-head

#15702 · opened Oct 03, 2018 by Cheng Shao 8.8.1 5 Pnormal Trac import bug error messages
- CLOSED
- 6
updated Jul 07, 2019
Type family & typeclass interaction suppresses errors

#15962 · opened Nov 28, 2018 by madgen 8.8.1 5 Pnormal Trac import TypeFamilies bug error messages newcomer typechecker
- CLOSED
- 2
updated Jul 07, 2019
Poor error message source location reporting with unsaturated type family

#15986 · opened Dec 02, 2018 by Ryan Scott 8.8.1 5 Pnormal Trac import TypeFamilies bug error messages
- CLOSED
- 2
updated Jul 07, 2019
GHC internal error while typechecking of instance definition

#16394 · opened Mar 05, 2019 by Day1721 8.8.1 3 Plow Trac import bug error messages typechecker
- CLOSED
- 3
updated Jul 07, 2019
Spurious missing home modules warning in the present of hs-boot files

#16551 · opened Apr 07, 2019 by Mathieu Boespflug 8.8.1 bug error messages
- CLOSED
- 0
updated Jun 10, 2019