[GHC] #12903: SIGINT is not handled in forked process

[GHC]

#12903: SIGINT is not handled in forked process
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        Reporter:  qnikst            |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Runtime System    |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D2770
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"895a131f6e56847d9ebca2e9bfe19a3189e49d72/ghc"
 895a131f/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="895a131f6e56847d9ebca2e9bfe19a3189e49d72"
 Install toplevel handler inside fork.

 When rts is forked it doesn't update toplevel handler, so UserInterrupt
 exception is sent to Thread1 that doesn't exist in forked process.

 We install toplevel handler when fork so signal will be delivered to the
 new main thread.

 Fixes #12903

 Reviewers: simonmar, austin, erikd, bgamari

 Reviewed By: bgamari

 Subscribers: thomie

 Differential Revision: https://phabricator.haskell.org/D2770

 GHC Trac Issues: #12903
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12903#comment:4>
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