--- old/src/os_cpu/linux_zero/vm/os_linux_zero.hpp	2014-08-29 17:54:31.009311898 +0400
+++ new/src/os_cpu/linux_zero/vm/os_linux_zero.hpp	2014-08-29 17:54:30.881308194 +0400
@@ -53,4 +53,7 @@
 #endif
   }
 
+  // Amount beyond the callee frame size that we bang the stack.
+  static int extra_bang_size_in_bytes();
+
 #endif // OS_CPU_LINUX_ZERO_VM_OS_LINUX_ZERO_HPP