[Win64] "LLVM ERROR: Access past stack top" in std.math unittests

[Trass3r]

Only release std/math-unittest.obj seems to be affected.
Maybe related to recent real type changes.

[kinke]

I've had this one too, but ldc-developers/phobos#3 fixed it. I guess it's inline assembly treating the 64-bit double argument as 80-bit real.