[GHC] #7851: Give better diagnostic when arguments are omitted to a function call in do-notation

[GHC]

#7851: Give better diagnostic when arguments are omitted to a function call in do-
notation
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  Reporter:  JohnWiegley                        |          Owner:                
      Type:  feature request                    |         Status:  closed        
  Priority:  normal                             |      Milestone:                
 Component:  Compiler (Parser)                  |        Version:  7.4.2         
Resolution:  fixed                              |       Keywords:                
        Os:  MacOS X                            |   Architecture:  x86_64 (amd64)
   Failure:  Incorrect warning at compile-time  |     Difficulty:  Unknown       
  Testcase:  typecheck/should_fail/T7851        |      Blockedby:                
  Blocking:                                     |        Related:                
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Changes (by simonpj):

  * status:  new => closed
  * testcase:  => typecheck/should_fail/T7851
  * resolution:  => fixed


Comment:

 Good point.  I've improved it a bit, so it does indeed now complain about
 too few args.  This code was there all the time, but wasn't used for
 functions applied to ''no'' arguments; it only sprang to life if the
 function was applied to at least one argument.  Now it works with zero
 arguments too.

 Simon

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7851#comment:4>
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