[GHC] #13372: Attach CallStack to IOError, add CallStack constraints to relevant functions in base

[GHC]

#13372: Attach CallStack to IOError, add CallStack constraints to relevant
functions in base
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        Reporter:  ezyang            |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  libraries/base    |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by mnislaih):

 Both choices are viable, I think Java does (1), whereas C# goes with (2)
 but keeps a list of call stacks to avoid losing the original stack on
 rethrow.

 If we later wanted to add a call stack to SomeException, would (2) become
 the more natural choice ?

 If so, would it be worth adapting the proposal to add the call stack to
 SomeException now, but only surface it in IOError ?

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13372#comment:1>
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