Suggest PatternSynonyms
If I try to compile a pattern type signature like
pattern P :: G Int
without having enabled PatternSynonyms
then I get the error
Pat.hs:8:1:
Invalid type signature: pattern P :: G Int
Should be of form <variable> :: <type>
We could easily work out to suggest that the user enable PatternSynonyms
here.
Trac metadata
Trac field | Value |
---|---|
Version | 7.10.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |