[GHC] #9049: Expose srcLoc from the assertion architecture to allow better error messages

[GHC]

#9049: Expose srcLoc from the assertion architecture to allow better error
messages
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        Reporter:  nh2               |                   Owner:  gridaphobe
            Type:  feature request   |                  Status:  patch
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Compiler          |                 Version:  7.8.2
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:                    |                Blocking:
                                     |  Differential Revisions:  Phab:D578
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Comment (by gridaphobe):

 Replying to [comment:21 rodlogic]:
 > Replying to [comment:19 gridaphobe]:
 > > I've sent a patch that implements
 [wiki:ExplicitCallStack/ImplicitLocations] to Phab
 (https://phabricator.haskell.org/D578).
 > This is great. I would have taken me quite a while to get there.
 >
 > In your patch you mention that you didn't change base at this point,
 could we at least change GHC.Base to use it and add a new assertMsg?

 I'd rather keep that patch feature-only, to focus discussion around the
 design/implementation. But I'm happy to put together another patch, once
 D578 is merged, to discuss using it in base.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9049#comment:25>
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