--- old/src/java.base/unix/native/libjava/jni_util_md.c	2018-03-23 14:24:20.513157999 +0100
+++ new/src/java.base/unix/native/libjava/jni_util_md.c	2018-03-23 14:24:20.309158000 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2008, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -59,7 +59,7 @@
     }
 }
 
-size_t
+JNIEXPORT size_t JNICALL
 getLastErrorString(char *buf, size_t len)
 {
     if (errno == 0 || len < 1) return 0;
@@ -67,7 +67,7 @@
     return strlen(buf);
 }
 
-int
+JNIEXPORT int JNICALL
 getErrorString(int err, char *buf, size_t len)
 {
     if (err == 0 || len < 1) return 0;