diff --git a/libc-test/test/primitive_types.rs b/libc-test/test/primitive_types.rs
new file mode 100644
index 0000000000000..3db2d0bcf2ed9
--- /dev/null
+++ b/libc-test/test/primitive_types.rs
@@ -0,0 +1,15 @@
+use core::any::TypeId;
+
+macro_rules! ok {
+    ($($t:ident)*) => {$(
+        assert!(TypeId::of::<libc::$t>() == TypeId::of::<raw::$t>(),
+                "{} is wrong", stringify!($t));
+    )*}
+}
+
+#[test]
+fn same() {
+    use core::ffi;
+    ok!(c_char c_schar c_uchar c_short c_ushort c_int c_uint c_long c_ulong
+        c_longlong c_ulonglong c_float c_double);
+}