Pattern synonym signature fails with unlifted type
pattern P2# a b = (# a, b #)works but adding a type signture makes it fail
-- tp0w.hs:130:25-34: error: …
-- • Expecting a lifted type, but ‘(# a, b #)’ is unlifted
-- • In the type ‘(# a, b #)’
-- Compilation failed.
pattern P2# :: a -> b -> (# a, b #)
pattern P2# a b = (# a, b #)Same with these
pattern True :: Int#
pattern True = 1#
pattern False :: Int#
pattern False = 0#Trac metadata
| Trac field | Value |
|---|---|
| Version | 8.0.1 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
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| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |