diff -r a5c7cfdd44e4 -r 4085295dcf51 hotspot/src/os/aix/vm/os_aix.cpp
--- a/hotspot/src/os/aix/vm/os_aix.cpp	Thu Mar 23 17:45:13 2017 +0100
+++ b/hotspot/src/os/aix/vm/os_aix.cpp	Thu Mar 23 11:10:55 2017 -0700
@@ -877,7 +877,8 @@
 
   // Calculate stack size if it's not specified by caller.
   size_t stack_size = os::Posix::get_initial_stack_size(thr_type, req_stack_size);
-  pthread_attr_setstacksize(&attr, stack_size);
+  int status = pthread_attr_setstacksize(&attr, stack_size);
+  assert_status(status == 0, status, "pthread_attr_setstacksize");
 
   // Configure libc guard page.
   pthread_attr_setguardsize(&attr, os::Aix::default_guard_size(thr_type));