<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Mar 21, 2016, at 9:31 PM, Howard Lovatt <<a href="mailto:howard.lovatt@gmail.com" class="">howard.lovatt@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">How do you call <span style="font-size:12.8px" class="">swift_class_getInstanceExtents, it doesn't show in Xcode?</span></div></div></blockquote></div><br class=""><div class="">It's not provided as API by default. You can do this as an unsupported hack:</div><div class=""><br class=""></div><div class="">@_silgen_name("swift_class_getInstanceExtents")<br class="">func swift_class_getInstanceExtents(theClass: AnyClass)<br class=""> -> (negative: UInt, positive: UInt)<br class=""><br class=""></div><div class="">-Joe</div></body></html>