--- old/src/hotspot/os/posix/gc/z/zInitialize_posix.cpp	2019-12-11 12:53:23.693956805 +0100
+++ new/src/hotspot/os/posix/gc/z/zInitialize_posix.cpp	2019-12-11 12:53:23.493953490 +0100
@@ -27,3 +27,7 @@
 void ZInitialize::initialize_os() {
   // Does nothing
 }
+
+bool ZInitialize::is_os_supported() {
+  return true;
+}