[GHC] #10752: Print which warning-flag controls/enabled an emitted warning

[GHC]

#10752: Print which warning-flag controls/enabled an emitted warning
-------------------------------------+-------------------------------------
        Reporter:  hvr               |                Owner:  barrucadu
            Type:  feature request   |               Status:  closed
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Incorrect         |  Unknown/Multiple
  warning at compile-time            |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D1943
       Wiki Page:  Design/Warnings   |
-------------------------------------+-------------------------------------
Changes (by hvr):

 * status:  new => closed
 * resolution:   => fixed
 * milestone:  8.2.1 => 8.0.1


Comment:

 Let's call it a day and declare this ticket's scope done... at least I
 didn't notice any other warning-flags not being annotated in warnings (but
 there could still be!).

 There'll likely be follow-up tickets for evolving this feature in the
 future.

 -----

 Merged to ghc-8.0 via

 - 975353bfdfab375cb5c47dc2460792190abac277
 - 966cc28ffe1707685cb908753bb6f8fb78fc86c9
 - 2ffd9b167a107a82fff42adb22d15b185d8b8757
 - 94b2681507db793359b101b945c710e504971556
 - 02e91accf082967cd28ad0d081f774117ee3386b
 - 209143945233726a8cf5c4eb2605a4f8084e5fa0
 - 4f5b7ad8fe567bc520e5c1b185beadda9007afea

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10752#comment:22>
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