--- a/src/hotspot/os/aix/os_aix.cpp	Thu Jan 11 11:28:51 2018 +0100
+++ b/src/hotspot/os/aix/os_aix.cpp	Thu Jan 11 18:42:36 2018 -0500
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2012, 2017 SAP SE. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
@@ -1723,7 +1723,7 @@
   local_sem_post();
 }
 
-static int check_pending_signals(bool wait) {
+static int check_pending_signals() {
   Atomic::store(0, &sigint_count);
   for (;;) {
     for (int i = 0; i < NSIG + 1; i++) {
@@ -1732,9 +1732,6 @@
         return i;
       }
     }
-    if (!wait) {
-      return -1;
-    }
     JavaThread *thread = JavaThread::current();
     ThreadBlockInVM tbivm(thread);
 
@@ -1763,12 +1760,8 @@
   }
 }
 
-int os::signal_lookup() {
-  return check_pending_signals(false);
-}
-
 int os::signal_wait() {
-  return check_pending_signals(true);
+  return check_pending_signals();
 }
 
 ////////////////////////////////////////////////////////////////////////////////