TH Names can't be used in patterns
Here's an example where I try to use a Name
(with double ticks) as a pattern:
{-# LANGUAGE TemplateHaskell #-}
foo :: Name -> ()
foo ''Int = ()
It fails with this error:
test.hs:4:5-9: Parse error in pattern: ''Int
Seems like a bug to me (if we can compare Name
s, why can't we pattern-match on them?).
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 |