[GHC] #14112: bang patterns on pattern synonyms? (left vs right hand sides)

[GHC]

#14112: bang patterns on pattern synonyms? (left vs right hand sides)
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        Reporter:  carter            |                Owner:  RyanGlScott
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.2.1
      Resolution:                    |             Keywords:
                                     |  PatternSynonyms
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by carter):

 so what i'm sensing is the point that

 normal / "strict" data types are only strict on construction, but lazy on
 matching (except perhaps when dealing with unpacked/unboxed style internal
 tricks eg mapping Int to Int# etc).

 In contrast, we have here a way that can express lazy construction and
 strict matching?

 am i missing something?

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14112#comment:10>
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