[GHC] #7633: Checkable "minimal complete definitions"

[GHC]

#7633: Checkable "minimal complete definitions"
-------------------------------------+------------------------------------
        Reporter:  shachaf           |            Owner:
            Type:  feature request   |           Status:  patch
        Priority:  normal            |        Milestone:  7.8.1
       Component:  Compiler          |          Version:  7.6.1
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:  #6028
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Comment (by Herbert Valerio Riedel <hvr@…>):

 In [changeset:d72a4dc5d90ac4c32834a3bb00084252cbd042a3/testsuite]:
 {{{
 #!CommitTicketReference repository="testsuite"
 revision="d72a4dc5d90ac4c32834a3bb00084252cbd042a3"
 Update to new missing-method-decl warning style

 As a side-effect, the new `{-# MINIMAL #-}` facility (see #7633) changes
 the existing separate warnings for each missing method declaration:

 {{{
 No explicit method or default declaration for ‛+’
 In the instance declaration for ‛Num T’
 }}}

 to a single warning per class of the following form:

 {{{
 No explicit implementation for
   ‛+’, ‛*’, ‛abs’, ‛signum’, and ‛fromInteger’
 In the instance declaration for ‛Num T’
 }}}

 This commit adapts the reference output files in the testsuite to follow
 this change in GHC's warnings messages.

 Signed-off-by: Herbert Valerio Riedel <hvr at gnu.org>
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7633#comment:29>
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