--- a/hotspot/src/share/vm/runtime/os.cpp	Wed Jul 10 09:14:25 2013 -0700
+++ b/hotspot/src/share/vm/runtime/os.cpp	Fri Jul 05 22:17:47 2013 +0200
@@ -1020,7 +1020,7 @@
 // if C stack is walkable beyond current frame. The check for fp() is not
 // necessary on Sparc, but it's harmless.
 bool os::is_first_C_frame(frame* fr) {
-#if defined(IA64) && !defined(_WIN32)
+#if (defined(IA64) && !defined(AIX)) && !defined(_WIN32)
   // On IA64 we have to check if the callers bsp is still valid
   // (i.e. within the register stack bounds).
   // Notice: this only works for threads created by the VM and only if