Confusing parse error when forgetting "deriving"
This code:
module Main where
data Foo
= Foo
{ f_x :: Int
, f_y :: Int
} (Eq, Show)
Produces this error message:
foo.hs:5:7: Not in scope: `f_x'
foo.hs:6:7: Not in scope: `f_y'
I'm not sure how easy it is to improve the error message; but a "Not in scope" seems very confusing to me...
Trac metadata
Trac field | Value |
---|---|
Version | 7.6.3 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |