Hello. Please review the fix for JDK 14. Bug: https://bugs.openjdk.java.net/browse/JDK-8234522 Fix: http://cr.openjdk.java.net/~serb/8234522/webrev.00
This bug is tricky, we have a special mechanism to postpone deallocation of the objects on the Appkit thread. It solves the next problem: the native window pointer is disposed in the inner AppKit loop, while it is still referenced on the stack in the native Cocoa method which caused the mentioned inner loop. When the inner loop is exited Cocoa crashes while dereferencing this window pointer. This mechanism is implemented via posting NSEvent using NSApplicationDefined type and filter out this event in the nested event loop. But for some reason, macOS send us exactly the same event(type+subtype), which we try to use for deallocation and of course, this attempt will crashes. (probably because all constants of NSEvent we use were deprecated?) In the fix I have added additional marks(via data fields) to the event to make it easy to check it was created by us, also I have bump the initial value of subtype to minimize possible collisions. -- Best regards, Sergey.
