--- a/src/hotspot/os/aix/os_aix.cpp	Fri Oct 12 10:58:06 2018 +0200
+++ b/src/hotspot/os/aix/os_aix.cpp	Tue Oct 09 16:08:07 2018 +0530
@@ -4259,7 +4259,7 @@
 // or -1 on failure (e.g. can't fork a new process).
 // Unlike system(), this function can be called from signal handler. It
 // doesn't block SIGINT et al.
-int os::fork_and_exec(char* cmd) {
+int os::fork_and_exec(char* cmd, bool use_vfork_if_available) {
   char * argv[4] = {"sh", "-c", cmd, NULL};
 
   pid_t pid = fork();