[GHC] #8870: GHC 7.8.0 RC2 fails when compiling a hello world program on Windows 7 32bits

[GHC]

#8870: GHC 7.8.0 RC2 fails when compiling a hello world program on Windows 7
32bits
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        Reporter:  facundoq            |                Owner:
            Type:  bug                 |               Status:  closed
        Priority:  high                |            Milestone:  7.8.1
       Component:  Compiler            |              Version:  7.8.1-rc2
      Resolution:  fixed               |             Keywords:
Operating System:  Windows             |         Architecture:  x86
 Type of failure:  Compile-time crash  |            Test Case:
      Blocked By:                      |             Blocking:
 Related Tickets:  #12186              |  Differential Rev(s):
       Wiki Page:                      |
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Comment (by Tamar Christina <tamar@…>):

 In [changeset:"1e795a008da8ab2ae88cca04aca01c50967b4397/ghc"
 1e795a00/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="1e795a008da8ab2ae88cca04aca01c50967b4397"
 Use check stacking on Windows.

 Summary:
 #8870 added as a temporary work around a much higher initial reserve
 and committed stack space of 2mb. This is causing problems with other
 windows applications.

 The hack was supposed to be temporary untill we could emit `__chkstk`
 instructions.
 But GCC can emit stack checks automatically for us if `-fstack-check` is
 passed.

 This will then emit calls to `___chkstk_ms` before stack allocations.

 ```
   633de0:       48 83 e0 f0             and    $0xfffffffffffffff0,%rax
   633de4:       e8 07 0c 0d 00          callq  7049f0 <___chkstk_ms>
   633de9:       48 29 c4                sub    %rax,%rsp
 ```

 The hack is now no longer needed.

 Test Plan: ./validate

 Reviewers: austin, erikd, awson, bgamari

 Reviewed By: bgamari

 Subscribers: thomie, #ghc_windows_task_force

 Differential Revision: https://phabricator.haskell.org/D2535

 GHC Trac Issues: #12186
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8870#comment:22>
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