Index: libcfa/src/concurrency/iofwd.hfa
===================================================================
--- libcfa/src/concurrency/iofwd.hfa	(revision 32a8b6112aaacaabf9763757476a3e132a4b3ac8)
+++ libcfa/src/concurrency/iofwd.hfa	(revision 63ec5fab9d9049b9bc5df584d22f9637a079a611)
@@ -38,4 +38,11 @@
 	#define CFA_IO_ASYNC IOSQE_ASYNC
 #endif
+
+#if __OFF_T_MATCHES_OFF64_T
+	typedef __off64_t off_t;
+#else
+	typedef __off_t off_t;
+#endif
+typedef __off64_t off64_t;
 
 struct cluster;
Index: libcfa/src/concurrency/kernel.hfa
===================================================================
--- libcfa/src/concurrency/kernel.hfa	(revision 32a8b6112aaacaabf9763757476a3e132a4b3ac8)
+++ libcfa/src/concurrency/kernel.hfa	(revision 63ec5fab9d9049b9bc5df584d22f9637a079a611)
@@ -159,5 +159,5 @@
 
 static inline void  ?{}(io_cancellation & this) { this.target = -1u; }
-static inline void ^?{}(io_cancellation & this) {}
+static inline void ^?{}(io_cancellation &) {}
 bool cancel(io_cancellation & this);