[swift-users] Object size on heap

[Joe Groff]

> On Mar 21, 2016, at 9:31 PM, Howard Lovatt <howard.lovatt at gmail.com> wrote:
> 
> How do you call swift_class_getInstanceExtents, it doesn't show in Xcode?

It's not provided as API by default. You can do this as an unsupported hack:

@_silgen_name("swift_class_getInstanceExtents")
func swift_class_getInstanceExtents(theClass: AnyClass)
  -> (negative: UInt, positive: UInt)

-Joe
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