Multiple pattern type signatures accepted
This hogwash is accepted:
pattern P :: a -> b -> Maybe (a,b)
pattern P :: foo => bar => blah -> urgh
pattern P x y = Just (x, y)
A little experimentation shows that only the first pattern signature is examined. Others are accepted and ignored.
Trac metadata
Trac field | Value |
---|---|
Version | 8.0.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |