https://issues.dlang.org/show_bug.cgi?id=12800

          Issue ID: 12800
           Summary: Fibers are broken on Win64
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Windows
            Status: NEW
          Severity: blocker
          Priority: P1
         Component: druntime
          Assignee: nobody@puremagic.com
          Reporter: sludwig@outerproduct.org

The following program crashes when entering the fiber. Compiled on Windows with -m64.

---
import std.stdio;
import core.thread;

void main()
{
    auto f = new Fiber({ writeln("Hello, World!"); });
    f.call(false);
}
---

Related comment: http://issues.dlang.org/show_bug.cgi?id=7954

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