unification error with ghc head
Ben Gamari is reporting unification errors when he tries to build llvm-general using current GHC HEAD (7.7) llvm-general currently builds with 7.4 and 7.6, so unless theres substantial changes to how higher rank types are checked, this sounds like it may be a type checker bug in HEAD.
https://github.com/bscarlet/llvm-general/issues/54 is relevant bug report, i'll include a copy of the information in a comment on this ticket
Trac metadata
Trac field | Value |
---|---|
Version | 7.7 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler (Type checker) |
Test case | |
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