[GHC] #1820: Windows segfault-catching only works for the main thread

[GHC]

#1820: Windows segfault-catching only works for the main thread
-------------------------------+--------------------------------------------
    Reporter:  simonmar        |       Owner:                                  
        Type:  bug             |      Status:  new                             
    Priority:  normal          |   Milestone:  6.8 branch                      
   Component:  Runtime System  |     Version:  6.8.1                           
    Severity:  normal          |    Keywords:                                  
  Difficulty:  Unknown         |    Testcase:  derefnull(ghci), divbyzero(ghci)
Architecture:  Unknown         |          Os:  Windows                         
-------------------------------+--------------------------------------------
 On Windows, the RTS tries to catch segmentation faults and divide-by-zero
 exceptions using structured exception handling in `rts/Main.c`.
 Unfortunately this only works for the main thread, so if the exception
 occurs in another thread it won't be caught.  GHCi runs all its
 computations in a separate thread, hence `derefnull(ghci)` and
 `divbyzero(ghci)` are failing.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1820>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler