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 |