[GHC] #13075: Top-level bang pattern accepted

[GHC]

#13075: Top-level bang pattern accepted
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        Reporter:  goldfire          |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.6.1
       Component:  Compiler          |              Version:  8.0.1
  (Parser)                           |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
                                     |  typecheck/should_fail/T13075
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by sighingnow):

 This ticket has already been fixed in
 [changeset:"af89d6872da2e00be738e1ac541346cd84e6d141/ghc"]

 {{{
 Reject top-level banged bindings

 Bizarrely, we were not rejecting
   !x = e

 Fix:

 * In the test in DsBinds.dsTopLHsBinds, use isBangedHsBind, not
   isBangedPatBind.  (Indeed the latter dies altogther.)

 * Implement isBangedHsBind in HsUtils;
   be sure to handle AbsBinds

 All this was shown up by Trac #13594
 }}}

 We should mark testcase T13075 as normal and add it's stderr.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13075#comment:13>
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