--- old/src/hotspot/os/bsd/gc/z/zBackingFile_bsd.cpp	2019-12-13 16:42:37.598760211 +0100
+++ new/src/hotspot/os/bsd/gc/z/zBackingFile_bsd.cpp	2019-12-13 16:42:37.050742118 +0100
@@ -89,6 +89,10 @@
   return _initialized;
 }
 
+void ZBackingFile::warn_commit_limits(size_t max) const {
+  // Does nothing
+}
+
 size_t ZBackingFile::size() const {
   return _size;
 }