Jumbled error message from type family operator
The attached file produces this error message:
Testcase.hs:82:0:
Couldn't match expected type `True'
against inferred type `Main.R::<=:GHC6'10GHC6'8 Minor1 minor'
When generalising the type(s) for `testcase'
That should say
[...] against inferred type `GHC6'10 Minor1 :<=: GHC6'8 minor'
Apologies for the complexity of the testcase; simpler testcases seem to not reproduce the problem.
Trac metadata
Trac field | Value |
---|---|
Version | 6.12.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler (Type checker) |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |