--- /dev/null
+#include <ccan/tal/talloc/talloc.h>
+#include <ccan/tal/talloc/talloc.c>
+#include <ccan/tap/tap.h>
+
+int main(void)
+{
+ char *parent, *c[4];
+ int i, j;
+
+ plan_tests(9);
+
+ /* tal_free(NULL) works. */
+ ok1(tal_free(NULL) == NULL);
+
+ parent = tal(NULL, char);
+ ok1(parent);
+ ok1(tal_parent(parent) == NULL);
+ ok1(tal_parent(NULL) == NULL);
+
+ for (i = 0; i < 4; i++)
+ c[i] = tal(parent, char);
+
+ for (i = 0; i < 4; i++)
+ ok1(tal_parent(c[i]) == parent);
+
+ /* Free parent. */
+ ok1(tal_free(parent) == NULL);
+
+ parent = tal(NULL, char);
+
+ /* Test freeing in every order */
+ for (i = 0; i < 4; i++) {
+ for (j = 0; j < 4; j++)
+ c[j] = tal(parent, char);
+
+ tal_free(c[i]);
+ tal_free(c[(i+1) % 4]);
+ tal_free(c[(i+2) % 4]);
+ tal_free(c[(i+3) % 4]);
+ }
+ tal_free(parent);
+
+ return exit_status();
+}