Spurious non-exhaustive pattern match warnings are given using GADTs
When using slightly complicated GADTs, GHC gives me erroneous non-exhaustive pattern match warnings. I have attached an example. I have observed this behavior in the four versions of ghc that I tried (6.10.4, and 6.12.{1,2,3}).
Trac metadata
| Trac field | Value |
|---|---|
| Version | 6.12.3 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
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