[GHC] #12012: Socket operations on Windows check errno instead of calling WSAGetLastError()

[GHC]

#12012: Socket operations on Windows check errno instead of calling
WSAGetLastError()
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        Reporter:  enolan            |                Owner:  Azel
            Type:  bug               |               Status:  patch
        Priority:  normal            |            Milestone:
       Component:  Core Libraries    |              Version:
      Resolution:                    |             Keywords:
Operating System:  Windows           |         Architecture:
 Type of failure:  Incorrect result  |  Unknown/Multiple
  at runtime                         |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D4639
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"01b15b88639443bec12415b6b0d906261bd6c047/ghc"
 01b15b88/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="01b15b88639443bec12415b6b0d906261bd6c047"
 Calling GetLastError() on Windows for socket IO (trac issue #12012)

 For the threaded RTS, putting a private copy of the throwErrno
 series in GHC.IO.FD which gets if the operation was on a socket,
 so that we can call c_maperrno if need be.
 For the non-threaded RTS, if memory serves we call GetLastError()
 in case of an error on socket IO. However, we don't do the translation
 ErrCode ↔ Errno currently (and besides, it's a primop) so we do it if
 needed through c_maperrno_func in the asynchronous read/write
 functions.

 Signed-off-by: ARJANEN Loïc Jean David <arjanen.loic at gmail.com>

 Reviewers: ekmett, hvr, bgamari

 Reviewed By: bgamari

 Subscribers: thomie, carter

 GHC Trac Issues: #12012

 Differential Revision: https://phabricator.haskell.org/D4639
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12012#comment:7>
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