diff --git a/objects/pflash/ccan/container_of/test/run.c b/objects/pflash/ccan/container_of/test/run.c
new file mode 100644
index 0000000..bc87789
--- /dev/null
+++ b/objects/pflash/ccan/container_of/test/run.c
@@ -0,0 +1,24 @@
+#include <ccan/container_of/container_of.h>
+#include <ccan/tap/tap.h>
+
+struct foo {
+	int a;
+	char b;
+};
+
+int main(int argc, char *argv[])
+{
+	struct foo foo = { .a = 1, .b = 2 };
+	int *intp = &foo.a;
+	char *charp = &foo.b;
+
+	plan_tests(6);
+	ok1(container_of(intp, struct foo, a) == &foo);
+	ok1(container_of(charp, struct foo, b) == &foo);
+	ok1(container_of_var(intp, &foo, a) == &foo);
+	ok1(container_of_var(charp, &foo, b) == &foo);
+
+	ok1(container_off(struct foo, a) == 0);
+	ok1(container_off(struct foo, b) == offsetof(struct foo, b));
+	return exit_status();
+}