[GHC] #13210: Can't run terminfo code in GHCi on Windows

[GHC]

#13210: Can't run terminfo code in GHCi on Windows
-------------------------------------+-------------------------------------
        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Runtime System    |              Version:  8.0.2
  (Linker)                           |
      Resolution:                    |             Keywords:
Operating System:  Windows           |         Architecture:
 Type of failure:  GHC rejects       |  Unknown/Multiple
  valid program                      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D3154
       Wiki Page:                    |  Phab:D3155
-------------------------------------+-------------------------------------
Changes (by RyanGlScott):

 * owner:  Phyx- => (none)
 * status:  closed => new
 * resolution:  fixed =>


Comment:

 Alas, it seems like this code is once again broken. On GHC 8.2.1 and
 8.2.2-rc3, running:

 {{{
 $ runghc -lncursesw Terminfo.hs
 }}}


 In MSYS2 simply exits early with exit code 127, and in PowerShell, it
 crashes with the following pop-up window:

 {{{
 [Window Title]
 ghc.exe

 [Main Instruction]
 ghc.exe has stopped working

 [Content]
 A problem caused the program to stop working correctly. Windows will close
 the program and notify you if a solution is available.

 [Close program]
 }}}

 Using Phyx-'s modified GHC 8.3 build, running that same command produces a
 stack trace:

 {{{
 $ ..\..\..\Software\ghc-8.3.20171021\bin\runghc -lncursesw .\Terminfo.hs

 Access violation in generated code when reading 0xffffffffffffffff

  Attempting to reconstruct a stack trace...

    Frame        Code address
  * 0x87af500    0x7ffa30adefc4 C:\WINDOWS\System32\msvcrt.dll+0x2efc4
  * 0x87af540    0x7ffa30adf074 C:\WINDOWS\System32\msvcrt.dll+0x2f074
  * 0x87af548    0xa275038
 C:\msys64\mingw64\lib\libncursesw.a(db_iterator.o)+0x68
                  (_nc_tic_dir+0x118)
  * 0x87af550    0x10
  * 0x87af558    0x398
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13210#comment:8>
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