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 | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |