RecordWildCards causes “is not a (visible) field of constructor” in ghci
% ghc -ignore-dot-ghci -e 'data Foo = Bar { baz :: Integer } deriving Show' -e 'Bar 42' -e '(Bar 42){ baz = 43 }' -e 'Bar { baz = 42 }'
Bar {baz = 42}
Bar {baz = 43}
Bar {baz = 42}
% ghc -ignore-dot-ghci -XRecordWildCards -e 'data Foo = Bar { baz :: Integer } deriving Show' -e 'Bar 42' -e '(Bar 42){ baz = 43 }' -e 'Bar { baz = 42 }'
Bar {baz = 42}
Bar {baz = 43}
<interactive>:1:7:
‘baz’ is not a (visible) field of constructor ‘Bar’
% ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.10.1
Trac metadata
Trac field |
Value |
Version |
7.10.1 |
Type |
Bug |
TypeOfFailure |
OtherFailure |
Priority |
normal |
Resolution |
Unresolved |
Component |
GHCi |
Test case |
|
Differential revisions |
|
BlockedBy |
|
Related |
|
Blocking |
|
CC |
hvr |
Operating system |
|
Architecture |
|