diff --git a/src/lib/ctypes.rs b/src/lib/ctypes.rs
new file mode 100644
index 0000000000000000000000000000000000000000..f5d625f1880e486516842e9132acae9226c94936
--- /dev/null
+++ b/src/lib/ctypes.rs
@@ -0,0 +1,4 @@
+// FIXME: This can't be right
+type size_t = uint;
+type ssize_t = int;
+
diff --git a/src/lib/std.rc b/src/lib/std.rc
index c00f7b629faca03b86125598bba1f756f2239ad6..f885f9d0ef7700c545bdf0d0a9775185c44b2343 100644
--- a/src/lib/std.rc
+++ b/src/lib/std.rc
@@ -29,6 +29,7 @@ mod comm;
 mod either;
 mod option;
 mod util;
+mod ctypes;
 
 // Authorize various rule-bendings.