Index: kernel/arch/ia64/include/types.h
===================================================================
--- kernel/arch/ia64/include/types.h	(revision 18ba2e4f567902114e46f652598ce0289af8fe72)
+++ kernel/arch/ia64/include/types.h	(revision 8b6930d5d4a9a2fdd17c45b45770dd51a1d956a6)
@@ -37,4 +37,5 @@
 
 typedef uint64_t size_t;
+typedef int64_t ssize_t;
 
 typedef uint64_t uintptr_t;