1 files changed, 29 insertions, 0 deletions
diff --git a/ccan/tal/test/run-free.c b/ccan/tal/test/run-free.c
new file mode 100644
index 0000000..37d03cd
--- /dev/null
+++ b/ccan/tal/test/run-free.c
@@ -0,0 +1,29 @@
+#include <ccan/tal/tal.h>
+#include <ccan/tal/tal.c>
+#include <ccan/tap/tap.h>
+
+static void destroy_errno(char *p UNNEEDED)
+{
+	/* Errno restored for all the destructors. */
+	ok1(errno == EINVAL);
+	errno = ENOENT;
+}
+
+int main(void)
+{
+	char *p;
+
+	plan_tests(5);
+
+	p = tal(NULL, char);
+	ok1(tal_add_destructor(p, destroy_errno));
+	ok1(tal_add_destructor(p, destroy_errno));
+
+	/* Errno save/restored across free. */
+	errno = EINVAL;
+	tal_free(p);
+	ok1(errno == EINVAL);
+
+	tal_cleanup();
+	return exit_status();
+}