Index: uspace/lib/c/include/bsearch.h
===================================================================
--- uspace/lib/c/include/bsearch.h	(revision 4805495a910f793f8918c13f029a38a5bb548154)
+++ uspace/lib/c/include/bsearch.h	(revision 3e828ea40985ce126affd5d7faa6ba679802b4db)
@@ -37,7 +37,12 @@
 
 #include <stddef.h>
+#include <_bits/decls.h>
+
+__C_DECLS_BEGIN;
 
 extern void *bsearch(const void *, const void *, size_t, size_t,
     int (*)(const void *, const void *));
+
+__C_DECLS_END;
 
 #endif