--- a/src/hotspot/os/bsd/os_bsd.cpp	Tue Aug 20 10:46:23 2019 +0200
+++ b/src/hotspot/os/bsd/os_bsd.cpp	Tue Aug 20 10:11:53 2019 +0100
@@ -3803,6 +3803,10 @@
   return n;
 }
 
+bool os::supports_map_sync() {
+  return false;
+}
+
 #ifndef PRODUCT
 void TestReserveMemorySpecial_test() {
   // No tests available for this platform