diff --git a/tests/usr.bin/xlint/lint1/d_bltinoffsetof.c b/tests/usr.bin/xlint/lint1/d_bltinoffsetof.c
new file mode 100644
index 000000000000..106b970789bb
--- /dev/null
+++ b/tests/usr.bin/xlint/lint1/d_bltinoffsetof.c
@@ -0,0 +1,12 @@
+
+struct foo {
+	int a;
+	char *b;
+};
+
+
+int
+main(void)
+{
+	return __builtin_offsetof(struct foo, b);
+}