From 1b8fbbd843ddeb5fc81c9303db9c590a436d499b Mon Sep 17 00:00:00 2001
From: William Casarin <jb55@jb55.com>
Date: Mon, 9 Jul 2018 12:10:32 -0700
Subject: progress

---
 ccan/tal/test/run-test-backend.c | 80 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 ccan/tal/test/run-test-backend.c

(limited to 'ccan/tal/test/run-test-backend.c')

diff --git a/ccan/tal/test/run-test-backend.c b/ccan/tal/test/run-test-backend.c
new file mode 100644
index 0000000..ebcd811
--- /dev/null
+++ b/ccan/tal/test/run-test-backend.c
@@ -0,0 +1,80 @@
+#include <stdlib.h>
+#include <stdbool.h>
+
+/* Make sure it always uses our allocation/resize/free fns! */
+static bool my_alloc_called;
+
+static void *my_alloc(size_t len)
+{
+	my_alloc_called = true;
+	return (char *)malloc(len + 16) + 16;
+}
+
+static void my_free(void *p)
+{
+	if (p)
+		free((char *)p - 16);
+}
+
+static void *my_realloc(void *old, size_t new_size)
+{
+	return (char *)realloc((char *)old - 16, new_size + 16) + 16;
+}
+
+#define free ((void (*)(void *))abort)
+#define malloc ((void *(*)(size_t))abort)
+#define realloc ((void *(*)(void *, size_t))abort)
+
+#include <ccan/tal/tal.h>
+#include <ccan/tal/tal.c>
+#include <ccan/tap/tap.h>
+
+#define NUM_ALLOCS 1000
+
+static void destroy_p(void *p UNNEEDED)
+{
+}
+
+int main(void)
+{
+	void *p, *c[NUM_ALLOCS];
+	int i;
+	char *name;
+
+	/* Mostly we rely on the allocator (or valgrind) crashing. */
+	plan_tests(1);
+
+	tal_set_backend(my_alloc, my_realloc, my_free, NULL);
+
+	p = tal(NULL, char);
+	ok1(my_alloc_called);
+
+	/* Adding properties makes us allocated. */
+	tal_add_destructor(p, destroy_p);
+
+	tal_set_name(p, "test");
+	name = tal_arr(NULL, char, 6);
+	strcpy(name, "test2");
+	tal_set_name(p, name);
+	/* makes us free old name */
+	tal_set_name(p, name);
+	tal_free(name);
+
+	/* Add lots of children. */
+	for (i = 0; i < NUM_ALLOCS; i++)
+		c[i] = tal(p, char);
+
+	/* Now steal a few. */
+	for (i = 1; i < NUM_ALLOCS / 2; i++)
+		tal_steal(c[0], c[i]);
+
+	/* Now free individual ones.. */
+	for (i = NUM_ALLOCS / 2; i < NUM_ALLOCS; i++)
+		tal_free(c[i]);
+
+	/* Finally, free the parent. */
+	tal_free(p);
+
+	tal_cleanup();
+	return exit_status();
+}
-- 
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