--- old/src/java.base/unix/native/libnio/ch/Net.c	2018-03-23 14:24:22.321157985 +0100
+++ new/src/java.base/unix/native/libnio/ch/Net.c	2018-03-23 14:24:22.081157987 +0100
@@ -747,7 +747,7 @@
 
 /* Declared in nio_util.h */
 
-jint
+JNIEXPORT jint JNICALL
 handleSocketError(JNIEnv *env, jint errorValue)
 {
     char *xn;