[GHC] #13330: forkIO has inconsistent behavior under optimization

[GHC]

#13330: forkIO has inconsistent behavior under optimization
-------------------------------------+-------------------------------------
        Reporter:  dfeuer            |                Owner:  dfeuer
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Core Libraries    |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Other             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3189
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by simonpj):

 Strange. The definition of `catch` is just
 {{{
 catch act = catchException (lazy act)
 }}}
 for reasons extensively documented in #11555.  So `catchException` has
 different, less desirable, and undocumented behaviour.

 Should move the `lazy` into `catchException`?  So then `catch =
 catchException`.  Do we actually want the distinction?

 Incidentally, the use of 'lazy' in `catch` is entirely un-documented.  No
 `Note` no nothing.  While fixing this ticket it would be good to fix that
 too.  At every least a reference to #11555!

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13330#comment:4>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler