Index: uspace/lib/c/arch/amd64/include/types.h
===================================================================
--- uspace/lib/c/arch/amd64/include/types.h	(revision 5baf2091c9d0ccfd0e7f817add7719093b215010)
+++ uspace/lib/c/arch/amd64/include/types.h	(revision e898296dccf506e7ddbab26d669ed48d920be059)
@@ -51,4 +51,5 @@
 typedef uint64_t size_t;
 
+typedef int64_t intptr_t;
 typedef uint64_t uintptr_t;
 typedef uint64_t atomic_count_t;