--- old/src/java.desktop/windows/native/libawt/windows/awt.h	2019-05-16 19:16:15.000000000 +0300
+++ new/src/java.desktop/windows/native/libawt/windows/awt.h	2019-05-16 19:16:15.000000000 +0300
@@ -191,7 +191,7 @@
 #define LO_INT(l)           ((int)(short)(l))
 #define HI_INT(l)           ((int)(short)(((DWORD)(l) >> 16) & 0xFFFF))
 
-extern JavaVM *jvm;
+extern "C" JavaVM *jvm;
 
 // Platform encoding is Unicode (UTF-16), re-define JNU_ functions
 // to proper JNI functions.