RULES pragma broken in the head
This module:
module Foo where
{-# RULES "id" forall x. id x = x #-}
compiles fine with 6.8.3 but the HEAD says (twice):
Foo.hs:2:0: Unrecognised pragma
Adding -frewrite-rules
has no effect. But with -XRank2Types
, it compiles fine for some reason.
Trac metadata
Trac field | Value |
---|---|
Version | 6.9 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | Unknown |
Architecture | Unknown |