--- old/src/os/solaris/vm/osThread_solaris.cpp	2015-08-12 14:09:09.000000000 +0200
+++ new/src/os/solaris/vm/osThread_solaris.cpp	2015-08-12 14:09:08.000000000 +0200
@@ -51,3 +51,8 @@
 void OSThread::SR_handler(Thread* thread, ucontext_t* uc) {
   os::Solaris::SR_handler(thread, uc);
 }
+
+bool OSThread::is_online() {
+  // TODO: Solaris can do better: find out if a thread is ONPROC.
+  return true;
+}