[GHC] #8022: Outdated documentation for the -fwarn-lazy-unlifted-bindings warning

[GHC]

#8022: Outdated documentation for the -fwarn-lazy-unlifted-bindings warning
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        Reporter:  asr               |            Owner:  thoughtpolice
            Type:  bug               |           Status:  new
        Priority:  highest           |        Milestone:  7.8.1
       Component:  Documentation     |          Version:  7.6.3
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by simonpj):

 No, the warning looks right to me.  As I understand it, we have
 {{{
 data Happy_IntList = HappyCons Int# Happy_IntList
 ...
 f x = ...blah...
     where
       HappyCons p q = ...blah...
 }}}
 The warning is about the unlifted `(p::Int#)` in a pattern binding for a
 lifted type `Happy_IntList`.  It's exactly like the third of your examples
 above
 {{{
     I# x = blah  -- Warning
 }}}
 So it looks to me as if GHC is generating a warning as advertised, and
 Happy is generating code that trips that warning. No?

 Simon

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8022#comment:11>
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