http://d.puremagic.com/issues/show_bug.cgi?id=7954

           Summary: x86_64 Windows fibers do not save nonvolatile XMM
                    registers
           Product: D
           Version: D2
          Platform: x86_64
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: druntime
        AssignedTo: nobody@puremagic.com
        ReportedBy: j.patrick.ernst@gmail.com


--- Comment #0 from Jameson Ernst <j.patrick.ernst@gmail.com> 2012-04-20 16:38:15 PDT ---
According to MSDN (http://msdn.microsoft.com/en-us/library/9z1stfyw.aspx), the XMM6-XMM15 registers are nonvolatile on x64 Windows. The current implementation of core.thread.Fiber for this platform does not preserve them.

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http://d.puremagic.com/issues/show_bug.cgi?id=7954


Manu <turkeyman@gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |turkeyman@gmail.com


--- Comment #1 from Manu <turkeyman@gmail.com> 2012-11-14 09:09:52 PST ---
(In reply to comment #0)
> According to MSDN (http://msdn.microsoft.com/en-us/library/9z1stfyw.aspx), the XMM6-XMM15 registers are nonvolatile on x64 Windows. The current implementation of core.thread.Fiber for this platform does not preserve them.

Are you using the unreleased DMD-win64 (2.061)?
I'm finding it just crashes and doesn't work at all.

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