diff -r 0379b618ec46 -r a2e22b1ee4a1 src/hotspot/share/runtime/thread.cpp
--- a/src/hotspot/share/runtime/thread.cpp	Sat Nov 17 18:11:23 2018 +0800
+++ b/src/hotspot/share/runtime/thread.cpp	Sat Nov 17 13:48:50 2018 +0100
@@ -4703,6 +4703,7 @@
       CompileTask* task = ct->task();
       if (task != NULL) {
         thread->print_name_on_error(st, buf, buflen);
+        st->print("  ");
         task->print(st, NULL, true, true);
       }
     }