talloc: use failtest to test failure paths.

ccan/talloc/_info

@@ -99,6 +99,7 @@ int main(int argc, char *argv[])
 	if (strcmp(argv[1], "depends") == 0) {
 		printf("ccan/compiler\n");
 		printf("ccan/typesafe_cb\n");
+		printf("ccan/failtest\n");
 		return 0;
 	}
 

ccan/talloc/test/run-corruption1.c

+/* failtest with valgrind caught this read-after-free. */
+#include <ccan/talloc/talloc.c>
+#include <stdbool.h>
+#include <ccan/tap/tap.h>
+
+int main(int argc, char *argv[])
+{
+	void *root, *p1;
+
+	plan_tests(2);
+	talloc_enable_null_tracking();
+	root = talloc_new(NULL);
+	p1 = talloc_strdup(root, "foo");
+	talloc_increase_ref_count(p1);
+	talloc_free(root);
+	ok1(strcmp(p1, "foo") == 0);
+	talloc_unlink(NULL, p1);
+
+	/* This closes the leak, but make sure we're not freeing unexpected. */
+	ok1(!talloc_chunk_from_ptr(null_context)->child);
+	talloc_disable_null_tracking();
+
+	return exit_status();
+}

ccan/talloc/test/run-external-alloc.c

@@ -32,7 +32,7 @@ static void ext_unlock(void)
 int main(void)
 {
 	char *p, *p2, *head;
-	plan_tests(13);
+	plan_tests(15);
 
 	expected_parent = NULL;
 	head = talloc_add_external(NULL, ext_realloc, ext_lock, ext_unlock);
@@ -62,6 +62,10 @@ int main(void)
 	talloc_free(p);
 	ok1(ext_free_count == 2);
 
+	expected_parent = NULL;
+	talloc_free(head);
+	ok1(ext_free_count == 3);
+
 	ok1(lock_count == unlock_count);
 
 	return exit_status();

ccan/talloc/test/run-test_autofree.c

+#include <ccan/talloc/talloc.c>
+#include <stdbool.h>
+#include <ccan/tap/tap.h>
+
+static int destroy_int(int *p)
+{
+	ok1(*p == 7);
+	_exit(0);
+}
+
+int main(int argc, char *argv[])
+{
+	int *p;
+
+	/* If autofree context doesn't work, we won't run all tests! */
+	plan_tests(1);
+
+	p = talloc(talloc_autofree_context(), int);
+	*p = 7;
+	talloc_set_destructor(p, destroy_int);
+
+	/* Note!  We fail here, unless destructor called! */
+	exit(1);
+}
+	

ccan/talloc/test/run-test_free_in_destructor.c

+/* 
+   Unix SMB/CIFS implementation.
+
+   local testing of talloc routines.
+
+   Copyright (C) Andrew Tridgell 2004
+   Converted to ccan tests by Rusty Russell 2008
+   
+     ** NOTE! The following LGPL license applies to the talloc
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <ccan/failtest/failtest_override.h>
+#include <ccan/talloc/talloc.c>
+#include <stdbool.h>
+#include <ccan/tap/tap.h>
+#include <ccan/failtest/failtest.h>
+
+#define torture_assert(test, expr, str)					\
+	ok(expr, "%s [\n%s: Expression %s failed: %s\n]\n",		\
+	   test, __location__, #expr, str)
+
+#define torture_assert_str_equal(test, arg1, arg2, desc)	\
+	ok(strcmp(arg1, arg2) == 0,				\
+	   "%s [\n%s: Expected %s, got %s: %s\n]\n",		\
+	   test, __location__, arg1, arg2, desc)
+
+#define CHECK_SIZE(test, ptr, tsize)					\
+	ok(talloc_total_size(ptr) == (tsize),				\
+	   "%s [\nwrong '%s' tree size: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_size(ptr),				\
+	   (unsigned)tsize)
+
+#define CHECK_BLOCKS(test, ptr, tblocks)				\
+	ok(talloc_total_blocks(ptr) == (tblocks),			\
+	   "%s [\nwrong '%s' tree blocks: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_blocks(ptr),			\
+	   (unsigned)tblocks)
+
+#define CHECK_PARENT(test, ptr, parent)					\
+	ok(talloc_parent(ptr) == (parent),				\
+	   "%s [\n'%s' has wrong parent: got %p  expected %p\n]\n",	\
+	   test, #ptr,							\
+	   talloc_parent(ptr),						\
+	   (parent))
+
+struct torture_context;
+
+static bool test_talloc_free_in_destructor_run;
+static int _test_talloc_free_in_destructor(void **ptr)
+{
+	talloc_free(*ptr);
+	test_talloc_free_in_destructor_run = true;
+	return 0;
+}
+
+static bool test_talloc_free_in_destructor(const struct torture_context *ctx)
+{
+	void *level0;
+	void *level1;
+	void *level2;
+	void *level3;
+	void *level4;
+	void **level5;
+	bool ret = false;
+
+	level0 = talloc_new(ctx);
+	if (!level0)
+		goto out;
+	level1 = talloc_new(level0);
+	if (!level1)
+		goto out;
+	level2 = talloc_new(level1);
+	if (!level2)
+		goto out;
+	level3 = talloc_new(level2);
+	if (!level3)
+		goto out;
+	level4 = talloc_new(level3);
+	if (!level4)
+		goto out;
+	level5 = talloc(level4, void *);
+	if (!level5)
+		goto out;
+
+	*level5 = talloc_reference(NULL, level3);
+
+	test_talloc_free_in_destructor_run = false;
+	talloc_set_destructor(level5, _test_talloc_free_in_destructor);
+
+	talloc_free(level1);
+	ret = true;
+out:
+	talloc_free(level0);
+
+	ok1(test_talloc_free_in_destructor_run);
+
+	return ret;
+}
+
+int main(int argc, char *argv[])
+{
+	plan_tests(3);
+	failtest_init(argc, argv);
+
+	talloc_enable_null_tracking();
+	if (null_context) {
+		ok1(test_talloc_free_in_destructor(NULL));
+		/* This closes the leak, but don't free any other leaks! */
+		ok1(!talloc_chunk_from_ptr(null_context)->child);
+		talloc_disable_null_tracking();
+	}
+	failtest_exit(exit_status());
+}
+	

ccan/talloc/test/run-test_free_parent_deny_child.c

+/* 
+   Unix SMB/CIFS implementation.
+
+   local testing of talloc routines.
+
+   Copyright (C) Andrew Tridgell 2004
+   Converted to ccan tests by Rusty Russell 2008
+   
+     ** NOTE! The following LGPL license applies to the talloc
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <ccan/failtest/failtest_override.h>
+#include <ccan/talloc/talloc.c>
+#include <stdbool.h>
+#include <ccan/tap/tap.h>
+#include <ccan/failtest/failtest.h>
+
+#define torture_assert(test, expr, str)					\
+	ok(expr, "%s [\n%s: Expression %s failed: %s\n]\n",		\
+	   test, __location__, #expr, str)
+
+#define torture_assert_str_equal(test, arg1, arg2, desc)	\
+	ok(strcmp(arg1, arg2) == 0,				\
+	   "%s [\n%s: Expected %s, got %s: %s\n]\n",		\
+	   test, __location__, arg1, arg2, desc)
+
+#define CHECK_SIZE(test, ptr, tsize)					\
+	ok(talloc_total_size(ptr) == (tsize),				\
+	   "%s [\nwrong '%s' tree size: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_size(ptr),				\
+	   (unsigned)tsize)
+
+#define CHECK_BLOCKS(test, ptr, tblocks)				\
+	ok(talloc_total_blocks(ptr) == (tblocks),			\
+	   "%s [\nwrong '%s' tree blocks: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_blocks(ptr),				\
+	   (unsigned)tblocks)
+
+#define CHECK_PARENT(test, ptr, parent)					\
+	ok(talloc_parent(ptr) == (parent),				\
+	   "%s [\n'%s' has wrong parent: got %p  expected %p\n]\n",	\
+	   test, #ptr,							\
+	   talloc_parent(ptr),						\
+	   (parent))
+
+struct torture_context;
+
+static int fail_destructor_str(char *ptr)
+{
+	return -1;
+}
+
+static bool test_free_parent_deny_child(const struct torture_context *ctx)
+{
+	void *top = talloc_new(ctx);
+	char *level1;
+	char *level2;
+	char *level3;
+	bool ret = false;
+
+	if (!top)
+		goto out;
+
+	level1 = talloc_strdup(top, "level1");
+	if (!level1)
+		goto out;
+	level2 = talloc_strdup(level1, "level2");
+	if (!level2)
+		goto out;
+	level3 = talloc_strdup(level2, "level3");
+	if (!level3)
+		goto out;
+
+	talloc_set_destructor(level3, fail_destructor_str);
+	talloc_free(level1);
+	talloc_set_destructor(level3, NULL);
+
+	CHECK_PARENT("free_parent_deny_child", level3, top);
+	ret = true;
+
+out:
+	talloc_free(top);
+
+	return ret;
+}
+
+int main(int argc, char *argv[])
+{
+	plan_tests(3);
+	failtest_init(argc, argv);
+
+	talloc_enable_null_tracking();
+	if (null_context) {
+		ok1(test_free_parent_deny_child(NULL));
+		/* This closes the leak, but don't free any other leaks! */
+		ok1(!talloc_chunk_from_ptr(null_context)->child);
+		talloc_disable_null_tracking();
+	}
+	failtest_exit(exit_status());
+}
+	

ccan/talloc/test/run-test_loop.c

+/* 
+   Unix SMB/CIFS implementation.
+
+   local testing of talloc routines.
+
+   Copyright (C) Andrew Tridgell 2004
+   Converted to ccan tests by Rusty Russell 2008
+   
+     ** NOTE! The following LGPL license applies to the talloc
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <ccan/failtest/failtest_override.h>
+#include <ccan/talloc/talloc.c>
+#include <stdbool.h>
+#include <ccan/tap/tap.h>
+#include <ccan/failtest/failtest.h>
+
+#define torture_assert(test, expr, str)					\
+	ok(expr, "%s [\n%s: Expression %s failed: %s\n]\n",		\
+	   test, __location__, #expr, str)
+
+#define torture_assert_str_equal(test, arg1, arg2, desc)	\
+	ok(strcmp(arg1, arg2) == 0,				\
+	   "%s [\n%s: Expected %s, got %s: %s\n]\n",		\
+	   test, __location__, arg1, arg2, desc)
+
+#define CHECK_SIZE(test, ptr, tsize)					\
+	ok(talloc_total_size(ptr) == (tsize),				\
+	   "%s [\nwrong '%s' tree size: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_size(ptr),				\
+	   (unsigned)tsize)
+
+#define CHECK_BLOCKS(test, ptr, tblocks)				\
+	ok(talloc_total_blocks(ptr) == (tblocks),			\
+	   "%s [\nwrong '%s' tree blocks: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_blocks(ptr),				\
+	   (unsigned)tblocks)
+
+#define CHECK_PARENT(test, ptr, parent)					\
+	ok(talloc_parent(ptr) == (parent),				\
+	   "%s [\n'%s' has wrong parent: got %p  expected %p\n]\n",	\
+	   test, #ptr,							\
+	   talloc_parent(ptr),						\
+	   (parent))
+
+struct torture_context;
+
+static int loop_destructor_count;
+
+static int test_loop_destructor(char *ptr)
+{
+	loop_destructor_count++;
+	return 0;
+}
+
+static bool test_loop(const struct torture_context *ctx)
+{
+	void *top = talloc_new(ctx);
+	char *parent;
+	struct req1 {
+		char *req2, *req3;
+	} *req1;
+	bool ret = false;
+
+	if (!top)
+		goto out;
+
+	parent = talloc_strdup(top, "parent");
+	if (!parent)
+		goto out;
+
+	req1 = talloc(parent, struct req1);
+	if (!req1)
+		goto out;
+
+	req1->req2 = talloc_strdup(req1, "req2");  
+	if (!req1->req2)
+		goto out;
+
+	talloc_set_destructor(req1->req2, test_loop_destructor);
+	req1->req3 = talloc_strdup(req1, "req3");
+	if (!req1->req3)
+		goto out;
+	(void)talloc_reference(req1->req3, req1);
+	talloc_free(parent);
+
+	torture_assert("loop", loop_destructor_count == 1, 
+				   "FAILED TO FIRE LOOP DESTRUCTOR\n");
+	loop_destructor_count = 0;
+	ret = true;
+out:
+	talloc_free(top);
+
+	return ret;
+}
+
+int main(int argc, char *argv[])
+{
+	plan_tests(3);
+	failtest_init(argc, argv);
+
+	talloc_enable_null_tracking();
+	if (null_context) {
+		ok1(test_loop(NULL));
+		/* This closes the leak, but don't free any other leaks! */
+		ok1(!talloc_chunk_from_ptr(null_context)->child);
+		talloc_disable_null_tracking();
+	}
+	failtest_exit(exit_status());
+}
+	

ccan/talloc/test/run-test_misc.c

+/* 
+   Unix SMB/CIFS implementation.
+
+   local testing of talloc routines.
+
+   Copyright (C) Andrew Tridgell 2004
+   Converted to ccan tests by Rusty Russell 2008
+   
+     ** NOTE! The following LGPL license applies to the talloc
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <ccan/failtest/failtest_override.h>
+#include <ccan/talloc/talloc.c>
+#include <stdbool.h>
+#include <ccan/tap/tap.h>
+#include <ccan/failtest/failtest.h>
+
+#define torture_assert(test, expr, str)					\
+	ok(expr, "%s [\n%s: Expression %s failed: %s\n]\n",		\
+	   test, __location__, #expr, str)
+
+#define torture_assert_str_equal(test, arg1, arg2, desc)	\
+	ok(strcmp(arg1, arg2) == 0,				\
+	   "%s [\n%s: Expected %s, got %s: %s\n]\n",		\
+	   test, __location__, arg1, arg2, desc)
+
+#define CHECK_SIZE(test, ptr, tsize)					\
+	ok(talloc_total_size(ptr) == (tsize),				\
+	   "%s [\nwrong '%s' tree size: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_size(ptr),				\
+	   (unsigned)tsize)
+
+#define CHECK_BLOCKS(test, ptr, tblocks)				\
+	ok(talloc_total_blocks(ptr) == (tblocks),			\
+	   "%s [\nwrong '%s' tree blocks: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_blocks(ptr),			\
+	   (unsigned)tblocks)
+
+#define CHECK_PARENT(test, ptr, parent)					\
+	ok(talloc_parent(ptr) == (parent),				\
+	   "%s [\n'%s' has wrong parent: got %p  expected %p\n]\n",	\
+	   test, #ptr,							\
+	   talloc_parent(ptr),						\
+	   (parent))
+
+struct torture_context;
+
+static int fail_destructor(void *ptr)
+{
+	return -1;
+}
+
+/*
+  miscellaneous tests to try to get a higher test coverage percentage
+*/
+static bool test_misc(const struct torture_context *ctx)
+{
+	void *root, *p1;
+	char *p2;
+	double *d;
+	const char *name;
+	bool ret = false;
+
+	root = talloc_new(ctx);
+	if (!root)
+		goto out;
+
+	p1 = talloc_size(root, 0x7fffffff);
+	torture_assert("misc", !p1, "failed: large talloc allowed\n");
+
+	p1 = talloc_strdup(root, "foo");
+	if (!p1)
+		goto out;
+
+	if (talloc_increase_ref_count(p1) != 0)
+		goto out;
+	if (talloc_increase_ref_count(p1) != 0)
+		goto out;
+	if (talloc_increase_ref_count(p1) != 0)
+		goto out;
+	CHECK_BLOCKS("misc", p1, 1);
+	CHECK_BLOCKS("misc", root, 2);
+	talloc_free(p1);
+	CHECK_BLOCKS("misc", p1, 1);
+	CHECK_BLOCKS("misc", root, 2);
+	talloc_unlink(NULL, p1);
+	CHECK_BLOCKS("misc", p1, 1);
+	CHECK_BLOCKS("misc", root, 2);
+	p2 = talloc_strdup(p1, "foo");
+	if (!p2)
+		goto out;
+	torture_assert("misc", talloc_unlink(root, p2) == -1,
+				   "failed: talloc_unlink() of non-reference context should return -1\n");
+	torture_assert("misc", talloc_unlink(p1, p2) == 0,
+		"failed: talloc_unlink() of parent should succeed\n");
+	talloc_free(p1);
+	CHECK_BLOCKS("misc", p1, 1);
+	CHECK_BLOCKS("misc", root, 2);
+
+	name = talloc_set_name(p1, "my name is %s", "foo");
+	if (!name)
+		goto out;
+	torture_assert_str_equal("misc", talloc_get_name(p1), "my name is foo",
+		"failed: wrong name after talloc_set_name(my name is foo)");
+	CHECK_BLOCKS("misc", p1, 2);
+	CHECK_BLOCKS("misc", root, 3);
+
+	talloc_set_name_const(p1, NULL);
+	torture_assert_str_equal ("misc", talloc_get_name(p1), "UNNAMED",
+		"failed: wrong name after talloc_set_name(NULL)");
+	CHECK_BLOCKS("misc", p1, 2);
+	CHECK_BLOCKS("misc", root, 3);
+
+	torture_assert("misc", talloc_free(NULL) == -1, 
+				   "talloc_free(NULL) should give -1\n");
+
+	talloc_set_destructor(p1, fail_destructor);
+	torture_assert("misc", talloc_free(p1) == -1, 
+		"Failed destructor should cause talloc_free to fail\n");
+	talloc_set_destructor(p1, NULL);
+
+	p2 = (char *)talloc_zero_size(p1, 20);
+	if (!p2)
+		goto out;
+	torture_assert("misc", p2[19] == 0, "Failed to give zero memory\n");
+	talloc_free(p2);
+
+	torture_assert("misc", talloc_strdup(root, NULL) == NULL,
+		"failed: strdup on NULL should give NULL\n");
+
+	p2 = talloc_strndup(p1, "foo", 2);
+	if (!p2)
+		goto out;
+	torture_assert("misc", strcmp("fo", p2) == 0, 
+				   "strndup doesn't work\n");
+	p2 = talloc_asprintf_append(p2, "o%c", 'd');
+	if (!p2)
+		goto out;
+	torture_assert("misc", strcmp("food", p2) == 0, 
+				   "talloc_asprintf_append doesn't work\n");
+	CHECK_BLOCKS("misc", p2, 1);
+	CHECK_BLOCKS("misc", p1, 3);
+
+	p2 = talloc_asprintf_append(NULL, "hello %s", "world");
+	if (!p2)
+		goto out;
+	torture_assert("misc", strcmp("hello world", p2) == 0,
+		"talloc_asprintf_append doesn't work\n");
+	CHECK_BLOCKS("misc", p2, 1);
+	CHECK_BLOCKS("misc", p1, 3);
+	talloc_free(p2);
+
+	d = talloc_array(p1, double, 0x20000000);
+	torture_assert("misc", !d, "failed: integer overflow not detected\n");
+
+	d = talloc_realloc(p1, d, double, 0x20000000);
+	torture_assert("misc", !d, "failed: integer overflow not detected\n");
+
+	talloc_free(p1);
+	CHECK_BLOCKS("misc", root, 1);
+
+	p1 = talloc_named(root, 100, "%d bytes", 100);
+	if (!p1)
+		goto out;
+	CHECK_BLOCKS("misc", p1, 2);
+	CHECK_BLOCKS("misc", root, 3);
+	talloc_unlink(root, p1);
+
+	p1 = talloc_init("%d bytes", 200);
+	if (!p1)
+		goto out;
+	p2 = talloc_asprintf(p1, "my test '%s'", "string");
+	if (!p2)
+		goto out;
+	torture_assert_str_equal("misc", p2, "my test 'string'",
+		"failed: talloc_asprintf(\"my test '%%s'\", \"string\") gave: \"%s\"");
+	CHECK_BLOCKS("misc", p1, 3);
+	CHECK_SIZE("misc", p2, 17);
+	CHECK_BLOCKS("misc", root, 1);
+	talloc_unlink(NULL, p1);
+
+	p1 = talloc_named_const(root, 10, "p1");
+	if (!p1)
+		goto out;
+	p2 = (char *)talloc_named_const(root, 20, "p2");
+	if (!p2)
+		goto out;
+	if (!talloc_reference(p1, p2))
+		goto out;
+	talloc_unlink(root, p2);
+	CHECK_BLOCKS("misc", p2, 1);
+	CHECK_BLOCKS("misc", p1, 2);
+	CHECK_BLOCKS("misc", root, 3);
+	talloc_unlink(p1, p2);
+	talloc_unlink(root, p1);
+
+	p1 = talloc_named_const(root, 10, "p1");
+	if (!p1)
+		goto out;
+	p2 = (char *)talloc_named_const(root, 20, "p2");
+	if (!p2)
+		goto out;
+	if (!talloc_reference(NULL, p2))
+		goto out;
+	talloc_unlink(root, p2);
+	CHECK_BLOCKS("misc", p2, 1);
+	CHECK_BLOCKS("misc", p1, 1);
+	CHECK_BLOCKS("misc", root, 2);
+	talloc_unlink(NULL, p2);
+	talloc_unlink(root, p1);
+
+	/* Test that talloc_unlink is a no-op */
+
+	torture_assert("misc", talloc_unlink(root, NULL) == -1,
+		"failed: talloc_unlink(root, NULL) == -1\n");
+
+	CHECK_SIZE("misc", root, 0);
+
+	talloc_enable_leak_report();
+	talloc_enable_leak_report_full();
+	ret = true;
+out:
+	talloc_free(root);
+	return ret;
+}
+
+int main(int argc, char *argv[])
+{
+	plan_tests(47);
+	failtest_init(argc, argv);
+
+	talloc_enable_null_tracking();
+	if (null_context) {
+		ok1(test_misc(NULL));
+		/* This closes the leak, but don't free any other leaks! */
+		ok1(!talloc_chunk_from_ptr(null_context)->child);
+		talloc_disable_null_tracking();
+	}
+	failtest_exit(exit_status());
+}

ccan/talloc/test/run-test_move.c

+/* 
+   Unix SMB/CIFS implementation.
+
+   local testing of talloc routines.
+
+   Copyright (C) Andrew Tridgell 2004
+   Converted to ccan tests by Rusty Russell 2008
+   
+     ** NOTE! The following LGPL license applies to the talloc
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <ccan/failtest/failtest_override.h>
+#include <ccan/talloc/talloc.c>
+#include <stdbool.h>
+#include <ccan/tap/tap.h>
+#include <ccan/failtest/failtest.h>
+
+#define torture_assert(test, expr, str)					\
+	ok(expr, "%s [\n%s: Expression %s failed: %s\n]\n",		\
+	   test, __location__, #expr, str)
+
+#define torture_assert_str_equal(test, arg1, arg2, desc)	\
+	ok(strcmp(arg1, arg2) == 0,				\
+	   "%s [\n%s: Expected %s, got %s: %s\n]\n",		\
+	   test, __location__, arg1, arg2, desc)
+
+#define CHECK_SIZE(test, ptr, tsize)					\
+	ok(talloc_total_size(ptr) == (tsize),				\
+	   "%s [\nwrong '%s' tree size: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_size(ptr),				\
+	   (unsigned)tsize)
+
+#define CHECK_BLOCKS(test, ptr, tblocks)				\
+	ok(talloc_total_blocks(ptr) == (tblocks),			\
+	   "%s [\nwrong '%s' tree blocks: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_blocks(ptr),				\
+	   (unsigned)tblocks)
+
+#define CHECK_PARENT(test, ptr, parent)					\
+	ok(talloc_parent(ptr) == (parent),				\
+	   "%s [\n'%s' has wrong parent: got %p  expected %p\n]\n",	\
+	   test, #ptr,							\
+	   talloc_parent(ptr),						\
+	   (parent))
+
+struct torture_context;
+
+/*
+  test move
+*/
+static bool test_move(const struct torture_context *ctx)
+{
+	void *root;
+	struct t_move {
+		char *p;
+		int *x;
+	} *t1, *t2;
+	bool ret = false;
+
+	root = talloc_new(ctx);
+	if (!root)
+		goto out;
+
+	t1 = talloc(root, struct t_move);
+	if (!t1)
+		goto out;
+	t2 = talloc(root, struct t_move);
+	if (!t2)
+		goto out;
+	t1->p = talloc_strdup(t1, "foo");
+	if (!t1->p)
+		goto out;
+	t1->x = talloc(t1, int);
+	if (!t1->x)
+		goto out;
+	*t1->x = 42;
+
+	t2->p = talloc_move(t2, &t1->p);
+	t2->x = talloc_move(t2, &t1->x);
+	torture_assert("move", t1->p == NULL && t1->x == NULL &&
+	    strcmp(t2->p, "foo") == 0 && *t2->x == 42,
+		"talloc move failed");
+
+	ret = true;
+out:
+	talloc_free(root);
+
+	return ret;
+}
+
+int main(int argc, char *argv[])
+{
+	plan_tests(3);
+	failtest_init(argc, argv);
+
+	talloc_enable_null_tracking();
+	if (null_context) {
+		ok1(test_move(NULL));
+		/* This closes the leak, but don't free any other leaks! */
+		ok1(!talloc_chunk_from_ptr(null_context)->child);
+		talloc_disable_null_tracking();
+	}
+	failtest_exit(exit_status());
+}
+	

ccan/talloc/test/run-test_realloc.c

+/* 
+   Unix SMB/CIFS implementation.
+
+   local testing of talloc routines.
+
+   Copyright (C) Andrew Tridgell 2004
+   Converted to ccan tests by Rusty Russell 2008
+   
+     ** NOTE! The following LGPL license applies to the talloc
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <ccan/failtest/failtest_override.h>
+#include <ccan/talloc/talloc.c>
+#include <stdbool.h>
+#include <ccan/tap/tap.h>
+#include <ccan/failtest/failtest.h>
+
+#define torture_assert(test, expr, str)					\
+	ok(expr, "%s [\n%s: Expression %s failed: %s\n]\n",		\
+	   test, __location__, #expr, str)
+
+#define torture_assert_str_equal(test, arg1, arg2, desc)	\
+	ok(strcmp(arg1, arg2) == 0,				\
+	   "%s [\n%s: Expected %s, got %s: %s\n]\n",		\
+	   test, __location__, arg1, arg2, desc)
+
+#define CHECK_SIZE(test, ptr, tsize)					\
+	ok(talloc_total_size(ptr) == (tsize),				\
+	   "%s [\nwrong '%s' tree size: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_size(ptr),				\
+	   (unsigned)tsize)
+
+#define CHECK_BLOCKS(test, ptr, tblocks)				\
+	ok(talloc_total_blocks(ptr) == (tblocks),			\
+	   "%s [\nwrong '%s' tree blocks: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_blocks(ptr),				\
+	   (unsigned)tblocks)
+
+#define CHECK_PARENT(test, ptr, parent)					\
+	ok(talloc_parent(ptr) == (parent),				\
+	   "%s [\n'%s' has wrong parent: got %p  expected %p\n]\n",	\
+	   test, #ptr,							\
+	   talloc_parent(ptr),						\
+	   (parent))
+
+struct torture_context;
+
+/*
+  test realloc
+*/
+static bool test_realloc(const struct torture_context *ctx)
+{
+	void *root, *p1, *p2;
+	bool ret = false;
+
+	root = talloc_new(ctx);
+	if (!root)
+		goto out;
+
+	p1 = talloc_size(root, 10);
+	if (!p1)
+		goto out;
+	CHECK_SIZE("realloc", p1, 10);
+
+	p1 = talloc_realloc_size(NULL, p1, 20);
+	if (!p1)
+		goto out;
+	CHECK_SIZE("realloc", p1, 20);
+
+	if (!talloc_new(p1))
+		goto out;
+
+	p2 = talloc_realloc_size(p1, NULL, 30);
+	if (!p2)
+		goto out;
+
+	if (!talloc_new(p1))
+		goto out;
+
+	p2 = talloc_realloc_size(p1, p2, 40);
+	if (!p2)
+		goto out;
+
+	CHECK_SIZE("realloc", p2, 40);
+	CHECK_SIZE("realloc", root, 60);
+	CHECK_BLOCKS("realloc", p1, 4);
+
+	p1 = talloc_realloc_size(NULL, p1, 20);
+	if (!p1)
+		goto out;
+	CHECK_SIZE("realloc", p1, 60);
+
+	if (talloc_increase_ref_count(p2) != 0)
+		goto out;
+	torture_assert("realloc", talloc_realloc_size(NULL, p2, 5) == NULL,
+		"failed: talloc_realloc() on a referenced pointer should fail\n");
+	CHECK_BLOCKS("realloc", p1, 4);
+
+	ok1(talloc_realloc_size(NULL, p2, 0) == NULL);
+	ok1(talloc_realloc_size(NULL, p2, 0) == NULL);
+	CHECK_BLOCKS("realloc", p1, 3);
+
+	torture_assert("realloc", talloc_realloc_size(NULL, p1, 0x7fffffff) == NULL,
+		"failed: oversize talloc should fail\n");
+
+	ok1(talloc_realloc_size(NULL, p1, 0) == NULL);
+
+	CHECK_BLOCKS("realloc", root, 1);
+	CHECK_SIZE("realloc", root, 0);
+	ret = true;
+	
+out:
+	talloc_free(root);
+
+	return ret;
+}
+
+/*
+  test realloc with a child
+*/
+static bool test_realloc_child(const struct torture_context *ctx)
+{
+	void *root;
+	struct el2 {
+		const char *name;
+	} *el2;	
+	struct el1 {
+		int count;
+		struct el2 **list, **list2, **list3;
+	} *el1;
+	bool ret = false;
+
+	root = talloc_new(ctx);
+	if (!root)
+		goto out;
+
+	el1 = talloc(root, struct el1);
+	if (!el1)
+		goto out;
+	el1->list = talloc(el1, struct el2 *);
+	if (!el1->list)
+		goto out;
+	el1->list[0] = talloc(el1->list, struct el2);
+	if (!el1->list[0])
+		goto out;
+	el1->list[0]->name = talloc_strdup(el1->list[0], "testing");
+	if (!el1->list[0]->name)
+		goto out;
+
+	el1->list2 = talloc(el1, struct el2 *);
+	if (!el1->list2)
+		goto out;
+	el1->list2[0] = talloc(el1->list2, struct el2);
+	if (!el1->list2[0])
+		goto out;
+	el1->list2[0]->name = talloc_strdup(el1->list2[0], "testing2");
+	if (!el1->list2[0]->name)
+		goto out;
+
+	el1->list3 = talloc(el1, struct el2 *);
+	if (!el1->list3)
+		goto out;
+	el1->list3[0] = talloc(el1->list3, struct el2);
+	if (!el1->list3[0])
+		goto out;
+	el1->list3[0]->name = talloc_strdup(el1->list3[0], "testing2");
+	if (!el1->list3[0]->name)
+		goto out;
+	
+	el2 = talloc(el1->list, struct el2);
+	if (!el2)
+		goto out;
+	el2 = talloc(el1->list2, struct el2);
+	if (!el2)
+		goto out;
+	el2 = talloc(el1->list3, struct el2);
+	if (!el2)
+		goto out;
+
+	el1->list = talloc_realloc(el1, el1->list, struct el2 *, 100);
+	if (!el1->list)
+		goto out;
+	el1->list2 = talloc_realloc(el1, el1->list2, struct el2 *, 200);
+	if (!el1->list2)
+		goto out;
+	el1->list3 = talloc_realloc(el1, el1->list3, struct el2 *, 300);
+	if (!el1->list3)
+		goto out;
+
+	ret = true;
+out:
+	talloc_free(root);
+
+	return ret;
+}
+
+int main(int argc, char *argv[])
+{
+	plan_tests(17);
+	failtest_init(argc, argv);
+
+	talloc_enable_null_tracking();
+	if (null_context) {
+		ok1(test_realloc(NULL) && test_realloc_child(NULL));
+		/* This closes the leak, but don't free any other leaks! */
+		ok1(!talloc_chunk_from_ptr(null_context)->child);
+		talloc_disable_null_tracking();
+	}
+	failtest_exit(exit_status());
+}
+	

ccan/talloc/test/run-test_realloc_fn.c

+/* 
+   Unix SMB/CIFS implementation.
+
+   local testing of talloc routines.
+
+   Copyright (C) Andrew Tridgell 2004
+   Converted to ccan tests by Rusty Russell 2008
+   
+     ** NOTE! The following LGPL license applies to the talloc
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <ccan/failtest/failtest_override.h>
+#include <ccan/talloc/talloc.c>
+#include <stdbool.h>
+#include <ccan/tap/tap.h>
+#include <ccan/failtest/failtest.h>
+
+#define torture_assert(test, expr, str)					\
+	ok(expr, "%s [\n%s: Expression %s failed: %s\n]\n",		\
+	   test, __location__, #expr, str)
+
+#define torture_assert_str_equal(test, arg1, arg2, desc)	\
+	ok(strcmp(arg1, arg2) == 0,				\
+	   "%s [\n%s: Expected %s, got %s: %s\n]\n",		\
+	   test, __location__, arg1, arg2, desc)
+
+#define CHECK_SIZE(test, ptr, tsize)					\
+	ok(talloc_total_size(ptr) == (tsize),				\
+	   "%s [\nwrong '%s' tree size: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_size(ptr),				\
+	   (unsigned)tsize)
+
+#define CHECK_BLOCKS(test, ptr, tblocks)				\
+	ok(talloc_total_blocks(ptr) == (tblocks),			\
+	   "%s [\nwrong '%s' tree blocks: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_blocks(ptr),				\
+	   (unsigned)tblocks)
+
+#define CHECK_PARENT(test, ptr, parent)					\
+	ok(talloc_parent(ptr) == (parent),				\
+	   "%s [\n'%s' has wrong parent: got %p  expected %p\n]\n",	\
+	   test, #ptr,							\
+	   talloc_parent(ptr),						\
+	   (parent))
+
+struct torture_context;
+
+/*
+  test talloc_realloc_fn
+*/
+static bool test_realloc_fn(const struct torture_context *ctx)
+{
+	void *root, *p1;
+	bool ret = false;
+
+	root = talloc_new(ctx);
+	if (!root)
+		goto out;
+
+	p1 = talloc_realloc_fn(root, NULL, 10);
+	if (!p1)
+		goto out;
+	CHECK_BLOCKS("realloc_fn", root, 2);
+	CHECK_SIZE("realloc_fn", root, 10);
+	p1 = talloc_realloc_fn(root, p1, 20);
+	if (!p1)
+		goto out;
+	CHECK_BLOCKS("realloc_fn", root, 2);
+	CHECK_SIZE("realloc_fn", root, 20);
+	p1 = talloc_realloc_fn(root, p1, 0);
+	CHECK_BLOCKS("realloc_fn", root, 1);
+	CHECK_SIZE("realloc_fn", root, 0);
+	ret = true;
+
+out:
+	talloc_free(root);
+	return ret;
+}
+
+int main(int argc, char *argv[])
+{
+	plan_tests(8);
+	failtest_init(argc, argv);
+
+	talloc_enable_null_tracking();
+	if (null_context) {
+		ok1(test_realloc_fn(NULL));
+		/* This closes the leak, but don't free any other leaks! */
+		ok1(!talloc_chunk_from_ptr(null_context)->child);
+		talloc_disable_null_tracking();
+	}
+	failtest_exit(exit_status());
+}
+	

ccan/talloc/test/run-test_ref.c

+/* 
+   Unix SMB/CIFS implementation.
+
+   local testing of talloc routines.
+
+   Copyright (C) Andrew Tridgell 2004
+   Converted to ccan tests by Rusty Russell 2008
+   
+     ** NOTE! The following LGPL license applies to the talloc
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <ccan/failtest/failtest_override.h>
+#include <ccan/talloc/talloc.c>
+#include <stdbool.h>
+#include <ccan/tap/tap.h>
+#include <ccan/failtest/failtest.h>
+
+#define torture_assert(test, expr, str)					\
+	ok(expr, "%s [\n%s: Expression %s failed: %s\n]\n",		\
+	   test, __location__, #expr, str)
+
+#define torture_assert_str_equal(test, arg1, arg2, desc)	\
+	ok(strcmp(arg1, arg2) == 0,				\
+	   "%s [\n%s: Expected %s, got %s: %s\n]\n",		\
+	   test, __location__, arg1, arg2, desc)
+
+#define CHECK_SIZE(test, ptr, tsize)					\
+	ok(talloc_total_size(ptr) == (tsize),				\
+	   "%s [\nwrong '%s' tree size: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_size(ptr),				\
+	   (unsigned)tsize)
+
+#define CHECK_BLOCKS(test, ptr, tblocks)				\
+	ok(talloc_total_blocks(ptr) == (tblocks),			\
+	   "%s [\nwrong '%s' tree blocks: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_blocks(ptr),				\
+	   (unsigned)tblocks)
+
+#define CHECK_PARENT(test, ptr, parent)					\
+	ok(talloc_parent(ptr) == (parent),				\
+	   "%s [\n'%s' has wrong parent: got %p  expected %p\n]\n",	\
+	   test, #ptr,							\
+	   talloc_parent(ptr),						\
+	   (parent))
+
+struct torture_context;
+
+/*
+  test references 
+*/
+static bool test_ref1(const struct torture_context *ctx)
+{
+	void *root, *p1, *p2, *ref, *r1;
+	bool ret = false;
+
+	root = talloc_named_const(ctx, 0, "root");
+	if (!root)
+		goto out;
+	p1 = talloc_named_const(root, 1, "p1");
+	if (!p1)
+		goto out;
+	p2 = talloc_named_const(p1, 1, "p2");
+	if (!p2)
+		goto out;
+	if (!talloc_named_const(p1, 1, "x1"))
+		goto out;
+	if (!talloc_named_const(p1, 2, "x2"))
+		goto out;
+	if (!talloc_named_const(p1, 3, "x3"))
+		goto out;
+
+	r1 = talloc_named_const(root, 1, "r1");	
+	if (!r1)
+		goto out;
+	ref = talloc_reference(r1, p2);
+	if (!ref)
+		goto out;
+
+	CHECK_BLOCKS("ref1", p1, 5);
+	CHECK_BLOCKS("ref1", p2, 1);
+	CHECK_BLOCKS("ref1", r1, 2);
+
+	talloc_free(p2);
+
+	CHECK_BLOCKS("ref1", p1, 5);
+	CHECK_BLOCKS("ref1", p2, 1);
+	CHECK_BLOCKS("ref1", r1, 1);
+
+	talloc_free(p1);
+
+	CHECK_BLOCKS("ref1", r1, 1);
+
+	talloc_free(r1);
+
+	if (talloc_reference(root, NULL)) {
+		return false;
+	}
+
+	CHECK_BLOCKS("ref1", root, 1);
+
+	CHECK_SIZE("ref1", root, 0);
+	ret = true;
+out:
+	talloc_free(root);
+	return ret;
+}
+
+/*
+  test references 
+*/
+static bool test_ref2(const struct torture_context *ctx)
+{
+	void *root, *p1, *p2, *ref, *r1;
+	bool ret = false;
+
+	root = talloc_named_const(ctx, 0, "root");
+	if (!root)
+		goto out;
+	p1 = talloc_named_const(root, 1, "p1");
+	if (!p1)
+		goto out;
+	if (!talloc_named_const(p1, 1, "x1"))
+		goto out;
+	if (!talloc_named_const(p1, 1, "x2"))
+		goto out;
+	if (!talloc_named_const(p1, 1, "x3"))
+		goto out;
+	p2 = talloc_named_const(p1, 1, "p2");
+	if (!p2)
+		goto out;
+
+	r1 = talloc_named_const(root, 1, "r1");	
+	if (!r1)
+		goto out;
+	ref = talloc_reference(r1, p2);
+	if (!ref)
+		goto out;
+
+	CHECK_BLOCKS("ref2", p1, 5);
+	CHECK_BLOCKS("ref2", p2, 1);
+	CHECK_BLOCKS("ref2", r1, 2);
+
+	talloc_free(ref);
+
+	CHECK_BLOCKS("ref2", p1, 5);
+	CHECK_BLOCKS("ref2", p2, 1);
+	CHECK_BLOCKS("ref2", r1, 1);
+
+	talloc_free(p2);
+
+	CHECK_BLOCKS("ref2", p1, 4);
+	CHECK_BLOCKS("ref2", r1, 1);
+
+	talloc_free(p1);
+
+	CHECK_BLOCKS("ref2", r1, 1);
+
+	talloc_free(r1);
+
+	CHECK_SIZE("ref2", root, 0);
+	ret = true;
+
+out:
+	talloc_free(root);
+	return ret;
+}
+
+/*
+  test references 
+*/
+static bool test_ref3(const struct torture_context *ctx)
+{
+	void *root, *p1, *p2, *ref, *r1;
+	bool ret = false;
+
+	root = talloc_named_const(ctx, 0, "root");
+	if (!root)
+		goto out;
+	p1 = talloc_named_const(root, 1, "p1");
+	if (!p1)
+		goto out;
+	p2 = talloc_named_const(root, 1, "p2");
+	if (!p2)
+		goto out;
+	r1 = talloc_named_const(p1, 1, "r1");
+	if (!r1)
+		goto out;
+	ref = talloc_reference(p2, r1);
+	if (!ref)
+		goto out;
+
+	CHECK_BLOCKS("ref3", p1, 2);
+	CHECK_BLOCKS("ref3", p2, 2);
+	CHECK_BLOCKS("ref3", r1, 1);
+
+	talloc_free(p1);
+
+	CHECK_BLOCKS("ref3", p2, 2);
+	CHECK_BLOCKS("ref3", r1, 1);
+
+	talloc_free(p2);
+
+	CHECK_SIZE("ref3", root, 0);
+
+	ret = true;
+out:
+	talloc_free(root);
+
+	return ret;
+}
+
+/*
+  test references 
+*/
+static bool test_ref4(const struct torture_context *ctx)
+{
+	void *root, *p1, *p2, *ref, *r1;
+	bool ret = false;
+
+	root = talloc_named_const(ctx, 0, "root");
+	if (!root)
+		goto out;
+	p1 = talloc_named_const(root, 1, "p1");
+	if (!p1)
+		goto out;
+	if (!talloc_named_const(p1, 1, "x1"))
+		goto out;
+	if (!talloc_named_const(p1, 1, "x2"))
+		goto out;
+	if (!talloc_named_const(p1, 1, "x3"))
+		goto out;
+	p2 = talloc_named_const(p1, 1, "p2");
+	if (!p2)
+		goto out;
+
+	r1 = talloc_named_const(root, 1, "r1");	
+	if (!r1)
+		goto out;
+	ref = talloc_reference(r1, p2);
+	if (!ref)
+		goto out;
+
+	CHECK_BLOCKS("ref4", p1, 5);
+	CHECK_BLOCKS("ref4", p2, 1);
+	CHECK_BLOCKS("ref4", r1, 2);
+
+	talloc_free(r1);
+
+	CHECK_BLOCKS("ref4", p1, 5);
+	CHECK_BLOCKS("ref4", p2, 1);
+
+	talloc_free(p2);
+
+	CHECK_BLOCKS("ref4", p1, 4);
+
+	talloc_free(p1);
+
+	CHECK_SIZE("ref4", root, 0);
+
+	ret = true;
+out:
+	talloc_free(root);
+
+	return ret;
+}
+
+int main(int argc, char *argv[])
+{
+	plan_tests(34);
+	failtest_init(argc, argv);
+
+	talloc_enable_null_tracking();
+	if (null_context) {
+		ok1(test_ref1(NULL)
+		    && test_ref2(NULL)
+		    && test_ref3(NULL)
+		    && test_ref4(NULL));
+		/* This closes the leak, but don't free any other leaks! */
+		ok1(!talloc_chunk_from_ptr(null_context)->child);
+		talloc_disable_null_tracking();
+	}
+	failtest_exit(exit_status());
+}
+	

ccan/talloc/test/run-test_steal.c

+/* 
+   Unix SMB/CIFS implementation.
+
+   local testing of talloc routines.
+
+   Copyright (C) Andrew Tridgell 2004
+   Converted to ccan tests by Rusty Russell 2008
+   
+     ** NOTE! The following LGPL license applies to the talloc
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <ccan/failtest/failtest_override.h>
+#include <ccan/talloc/talloc.c>
+#include <stdbool.h>
+#include <ccan/tap/tap.h>
+#include <ccan/failtest/failtest.h>
+
+#define torture_assert(test, expr, str)					\
+	ok(expr, "%s [\n%s: Expression %s failed: %s\n]\n",		\
+	   test, __location__, #expr, str)
+
+#define torture_assert_str_equal(test, arg1, arg2, desc)	\
+	ok(strcmp(arg1, arg2) == 0,				\
+	   "%s [\n%s: Expected %s, got %s: %s\n]\n",		\
+	   test, __location__, arg1, arg2, desc)
+
+#define CHECK_SIZE(test, ptr, tsize)					\
+	ok(talloc_total_size(ptr) == (tsize),				\
+	   "%s [\nwrong '%s' tree size: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_size(ptr),				\
+	   (unsigned)tsize)
+
+#define CHECK_BLOCKS(test, ptr, tblocks)				\
+	ok(talloc_total_blocks(ptr) == (tblocks),			\
+	   "%s [\nwrong '%s' tree blocks: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_blocks(ptr),				\
+	   (unsigned)tblocks)
+
+#define CHECK_PARENT(test, ptr, parent)					\
+	ok(talloc_parent(ptr) == (parent),				\
+	   "%s [\n'%s' has wrong parent: got %p  expected %p\n]\n",	\
+	   test, #ptr,							\
+	   talloc_parent(ptr),						\
+	   (parent))
+
+struct torture_context;
+
+/*
+  test steal
+*/
+static bool test_steal(const struct torture_context *ctx)
+{
+	void *root, *p1, *p2;
+	bool ret = false;
+
+	root = talloc_new(ctx);
+	if (!root)
+		goto out;
+
+	p1 = talloc_array(root, char, 10);
+	if (!p1)
+		goto out;
+	CHECK_SIZE("steal", p1, 10);
+
+	p2 = talloc_realloc(root, NULL, char, 20);
+	if (!p2)
+		goto out;
+	CHECK_SIZE("steal", p1, 10);
+	CHECK_SIZE("steal", root, 30);
+
+	torture_assert("steal", talloc_steal(p1, NULL) == NULL,
+		"failed: stealing NULL should give NULL\n");
+
+	torture_assert("steal", talloc_steal(p1, p1) == p1,
+		"failed: stealing to ourselves is a nop\n");
+	CHECK_BLOCKS("steal", root, 3);
+	CHECK_SIZE("steal", root, 30);
+
+	talloc_steal(NULL, p1);
+	talloc_steal(NULL, p2);
+	CHECK_BLOCKS("steal", root, 1);
+	CHECK_SIZE("steal", root, 0);
+
+	talloc_free(p1);
+	talloc_steal(root, p2);
+	CHECK_BLOCKS("steal", root, 2);
+	CHECK_SIZE("steal", root, 20);
+	
+	talloc_free(p2);
+
+	CHECK_BLOCKS("steal", root, 1);
+	CHECK_SIZE("steal", root, 0);
+
+	talloc_free(root);
+	root = NULL;
+
+	p1 = talloc_size(NULL, 3);
+	if (!p1)
+		goto out;
+	CHECK_SIZE("steal", NULL, 3);
+	talloc_free(p1);
+	ret = true;
+
+out:
+	talloc_free(root);
+	return ret;
+}
+
+int main(int argc, char *argv[])
+{
+	plan_tests(16);
+	failtest_init(argc, argv);
+
+	talloc_enable_null_tracking();
+	if (null_context) {
+		ok1(test_steal(NULL));
+		/* This closes the leak, but don't free any other leaks! */
+		ok1(!talloc_chunk_from_ptr(null_context)->child);
+		talloc_disable_null_tracking();
+	}
+	failtest_exit(exit_status());
+}
+	

ccan/talloc/test/run-test_talloc_ptrtype.c

+/* 
+   Unix SMB/CIFS implementation.
+
+   local testing of talloc routines.
+
+   Copyright (C) Andrew Tridgell 2004
+   Converted to ccan tests by Rusty Russell 2008
+   
+     ** NOTE! The following LGPL license applies to the talloc
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <ccan/failtest/failtest_override.h>
+#include <ccan/talloc/talloc.c>
+#include <stdbool.h>
+#include <ccan/tap/tap.h>
+#include <ccan/failtest/failtest.h>
+
+#define torture_assert(test, expr, str)					\
+	ok(expr, "%s [\n%s: Expression %s failed: %s\n]\n",		\
+	   test, __location__, #expr, str)
+
+#define torture_assert_str_equal(test, arg1, arg2, desc)	\
+	ok(strcmp(arg1, arg2) == 0,				\
+	   "%s [\n%s: Expected %s, got %s: %s\n]\n",		\
+	   test, __location__, arg1, arg2, desc)
+
+#define CHECK_SIZE(test, ptr, tsize)					\
+	ok(talloc_total_size(ptr) == (tsize),				\
+	   "%s [\nwrong '%s' tree size: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_size(ptr),				\
+	   (unsigned)tsize)
+
+#define CHECK_BLOCKS(test, ptr, tblocks)				\
+	ok(talloc_total_blocks(ptr) == (tblocks),			\
+	   "%s [\nwrong '%s' tree blocks: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_blocks(ptr),				\
+	   (unsigned)tblocks)
+
+#define CHECK_PARENT(test, ptr, parent)					\
+	ok(talloc_parent(ptr) == (parent),				\
+	   "%s [\n'%s' has wrong parent: got %p  expected %p\n]\n",	\
+	   test, #ptr,							\
+	   talloc_parent(ptr),						\
+	   (parent))
+
+struct torture_context;
+
+static bool test_talloc_ptrtype(const struct torture_context *ctx)
+{
+	void *top = talloc_new(ctx);
+	struct struct1 {
+		int foo;
+		int bar;
+	} *s1, *s2, **s3, ***s4;
+	const char *location1;
+	const char *location2;
+	const char *location3;
+	const char *location4;
+	bool ret = false;
+
+	if (!top)
+		goto out;
+
+	s1 = talloc_ptrtype(top, s1);location1 = __location__;
+	if (!s1)
+		goto out;
+
+	ok1(talloc_get_size(s1) == sizeof(struct struct1));
+
+	ok1(strcmp(location1, talloc_get_name(s1)) == 0);
+
+	s2 = talloc_array_ptrtype(top, s2, 10);location2 = __location__;
+	if (!s2)
+		goto out;
+
+	ok1(talloc_get_size(s2) == (sizeof(struct struct1) * 10));
+
+	ok1(strcmp(location2, talloc_get_name(s2)) == 0);
+
+	s3 = talloc_array_ptrtype(top, s3, 10);location3 = __location__;
+	if (!s3)
+		goto out;
+
+	ok1(talloc_get_size(s3) == (sizeof(struct struct1 *) * 10));
+
+	torture_assert_str_equal("ptrtype", location3, talloc_get_name(s3),
+		"talloc_array_ptrtype() sets the wrong name");
+
+	s4 = talloc_array_ptrtype(top, s4, 10);location4 = __location__;
+	if (!s4)
+		goto out;
+
+	ok1(talloc_get_size(s4) == (sizeof(struct struct1 **) * 10));
+
+	torture_assert_str_equal("ptrtype", location4, talloc_get_name(s4),
+		"talloc_array_ptrtype() sets the wrong name");
+	ret = true;
+
+out:
+	talloc_free(top);
+
+	return ret;
+}
+
+int main(int argc, char *argv[])
+{
+	plan_tests(10);
+	failtest_init(argc, argv);
+
+	talloc_enable_null_tracking();
+	if (null_context) {
+		ok1(test_talloc_ptrtype(NULL));
+		/* This closes the leak, but don't free any other leaks! */
+		ok1(!talloc_chunk_from_ptr(null_context)->child);
+		talloc_disable_null_tracking();
+	}
+	failtest_exit(exit_status());
+}
+	

ccan/talloc/test/run-test_type.c

+/* 
+   Unix SMB/CIFS implementation.
+
+   local testing of talloc routines.
+
+   Copyright (C) Andrew Tridgell 2004
+   Converted to ccan tests by Rusty Russell 2008
+   
+     ** NOTE! The following LGPL license applies to the talloc
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <ccan/failtest/failtest_override.h>
+#include <ccan/talloc/talloc.c>
+#include <stdbool.h>
+#include <ccan/tap/tap.h>
+#include <ccan/failtest/failtest.h>
+
+#define torture_assert(test, expr, str)					\
+	ok(expr, "%s [\n%s: Expression %s failed: %s\n]\n",		\
+	   test, __location__, #expr, str)
+
+#define torture_assert_str_equal(test, arg1, arg2, desc)	\
+	ok(strcmp(arg1, arg2) == 0,				\
+	   "%s [\n%s: Expected %s, got %s: %s\n]\n",		\
+	   test, __location__, arg1, arg2, desc)
+
+#define CHECK_SIZE(test, ptr, tsize)					\
+	ok(talloc_total_size(ptr) == (tsize),				\
+	   "%s [\nwrong '%s' tree size: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_size(ptr),				\
+	   (unsigned)tsize)
+
+#define CHECK_BLOCKS(test, ptr, tblocks)				\
+	ok(talloc_total_blocks(ptr) == (tblocks),			\
+	   "%s [\nwrong '%s' tree blocks: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_blocks(ptr),				\
+	   (unsigned)tblocks)
+
+#define CHECK_PARENT(test, ptr, parent)					\
+	ok(talloc_parent(ptr) == (parent),				\
+	   "%s [\n'%s' has wrong parent: got %p  expected %p\n]\n",	\
+	   test, #ptr,							\
+	   talloc_parent(ptr),						\
+	   (parent))
+
+struct torture_context;
+
+/*
+  test type checking
+*/
+static bool test_type(const struct torture_context *ctx)
+{
+	void *root;
+	struct el1 {
+		int count;
+	};
+	struct el2 {
+		int count;
+	};
+	struct el1 *el1;
+	bool ret = false;
+
+	root = talloc_new(ctx);
+
+	el1 = talloc(root, struct el1);
+	if (!el1)
+		goto out;
+
+	el1->count = 1;
+
+	torture_assert("type", talloc_get_type(el1, struct el1) == el1,
+		"type check failed on el1\n");
+	torture_assert("type", talloc_get_type(el1, struct el2) == NULL,
+		"type check failed on el1 with el2\n");
+	talloc_set_type(el1, struct el2);
+	torture_assert("type", talloc_get_type(el1, struct el2) == (struct el2 *)el1,
+		"type set failed on el1 with el2\n");
+	ret = true;
+out:
+	talloc_free(root);
+
+	return ret;
+}
+
+int main(int argc, char *argv[])
+{
+	plan_tests(5);
+	failtest_init(argc, argv);
+
+	talloc_enable_null_tracking();
+	if (null_context) {
+		ok1(test_type(NULL));
+		/* This closes the leak, but don't free any other leaks! */
+		ok1(!talloc_chunk_from_ptr(null_context)->child);
+		talloc_disable_null_tracking();
+	}
+	failtest_exit(exit_status());
+}

ccan/talloc/test/run-test_unlink.c

+/* 
+   Unix SMB/CIFS implementation.
+
+   local testing of talloc routines.
+
+   Copyright (C) Andrew Tridgell 2004
+   Converted to ccan tests by Rusty Russell 2008
+   
+     ** NOTE! The following LGPL license applies to the talloc
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <ccan/failtest/failtest_override.h>
+#include <ccan/talloc/talloc.c>
+#include <stdbool.h>
+#include <ccan/tap/tap.h>
+#include <ccan/failtest/failtest.h>
+
+#define torture_assert(test, expr, str)					\
+	ok(expr, "%s [\n%s: Expression %s failed: %s\n]\n",		\
+	   test, __location__, #expr, str)
+
+#define torture_assert_str_equal(test, arg1, arg2, desc)	\
+	ok(strcmp(arg1, arg2) == 0,				\
+	   "%s [\n%s: Expected %s, got %s: %s\n]\n",		\
+	   test, __location__, arg1, arg2, desc)
+
+#define CHECK_SIZE(test, ptr, tsize)					\
+	ok(talloc_total_size(ptr) == (tsize),				\
+	   "%s [\nwrong '%s' tree size: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_size(ptr),				\
+	   (unsigned)tsize)
+
+#define CHECK_BLOCKS(test, ptr, tblocks)				\
+	ok(talloc_total_blocks(ptr) == (tblocks),			\
+	   "%s [\nwrong '%s' tree blocks: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_blocks(ptr),				\
+	   (unsigned)tblocks)
+
+#define CHECK_PARENT(test, ptr, parent)					\
+	ok(talloc_parent(ptr) == (parent),				\
+	   "%s [\n'%s' has wrong parent: got %p  expected %p\n]\n",	\
+	   test, #ptr,							\
+	   talloc_parent(ptr),						\
+	   (parent))
+
+struct torture_context;
+
+/*
+  test references 
+*/
+static bool test_unlink1(const struct torture_context *ctx)
+{
+	void *root, *p1, *p2, *ref, *r1;
+	bool ret = false;
+
+	root = talloc_named_const(ctx, 0, "root");
+	if (!root)
+		goto out;
+	
+	p1 = talloc_named_const(root, 1, "p1");
+	if (!p1)
+		goto out;
+	talloc_named_const(p1, 1, "x1");
+	talloc_named_const(p1, 1, "x2");
+	talloc_named_const(p1, 1, "x3");
+	p2 = talloc_named_const(p1, 1, "p2");
+	if (!p2)
+		goto out;
+
+	r1 = talloc_named_const(p1, 1, "r1");	
+	if (!r1)
+		goto out;
+	ref = talloc_reference(r1, p2);
+	if (!ref)
+		goto out;
+
+	CHECK_BLOCKS("unlink", p1, 7);
+	CHECK_BLOCKS("unlink", p2, 1);
+	CHECK_BLOCKS("unlink", r1, 2);
+
+	talloc_unlink(r1, p2);
+
+	CHECK_BLOCKS("unlink", p1, 6);
+	CHECK_BLOCKS("unlink", p2, 1);
+	CHECK_BLOCKS("unlink", r1, 1);
+
+	talloc_free(p1);
+
+	CHECK_SIZE("unlink", root, 0);
+	ret = true;
+out:
+	talloc_free(root);
+
+	return ret;
+}
+
+int main(int argc, char *argv[])
+{
+	plan_tests(9);
+	failtest_init(argc, argv);
+
+	talloc_enable_null_tracking();
+	if (null_context) {
+		ok1(test_unlink1(NULL));
+		/* This closes the leak, but don't free any other leaks! */
+		ok1(!talloc_chunk_from_ptr(null_context)->child);
+		talloc_disable_null_tracking();
+	}
+	failtest_exit(exit_status());
+}
+	

ccan/talloc/test/run-test_unref_reparent.c

+/* 
+   Unix SMB/CIFS implementation.
+
+   local testing of talloc routines.
+
+   Copyright (C) Andrew Tridgell 2004
+   Converted to ccan tests by Rusty Russell 2008
+   
+     ** NOTE! The following LGPL license applies to the talloc
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+   
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#include <ccan/failtest/failtest_override.h>
+#include <ccan/talloc/talloc.c>
+#include <stdbool.h>
+#include <ccan/tap/tap.h>
+#include <ccan/failtest/failtest.h>
+
+#define torture_assert(test, expr, str)					\
+	ok(expr, "%s [\n%s: Expression %s failed: %s\n]\n",		\
+	   test, __location__, #expr, str)
+
+#define torture_assert_str_equal(test, arg1, arg2, desc)	\
+	ok(strcmp(arg1, arg2) == 0,				\
+	   "%s [\n%s: Expected %s, got %s: %s\n]\n",		\
+	   test, __location__, arg1, arg2, desc)
+
+#define CHECK_SIZE(test, ptr, tsize)					\
+	ok(talloc_total_size(ptr) == (tsize),				\
+	   "%s [\nwrong '%s' tree size: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_size(ptr),				\
+	   (unsigned)tsize)
+
+#define CHECK_BLOCKS(test, ptr, tblocks)				\
+	ok(talloc_total_blocks(ptr) == (tblocks),			\
+	   "%s [\nwrong '%s' tree blocks: got %u  expected %u\n]\n",	\
+	   test, #ptr,							\
+	   (unsigned)talloc_total_blocks(ptr),				\
+	   (unsigned)tblocks)
+
+#define CHECK_PARENT(test, ptr, parent)					\
+	ok(talloc_parent(ptr) == (parent),				\
+	   "%s [\n'%s' has wrong parent: got %p  expected %p\n]\n",	\
+	   test, #ptr,							\
+	   talloc_parent(ptr),						\
+	   (parent))
+
+struct torture_context;
+
+static bool test_unref_reparent(const struct torture_context *ctx)
+{
+	void *root, *p1, *p2, *c1;
+	bool ret = false;
+
+	root = talloc_named_const(ctx, 0, "root");
+	if (!root)
+		goto out;
+	p1 = talloc_named_const(root, 1, "orig parent");
+	if (!p1)
+		goto out;
+	p2 = talloc_named_const(root, 1, "parent by reference");
+	if (!p2)
+		goto out;
+
+	c1 = talloc_named_const(p1, 1, "child");
+	if (!c1)
+		goto out;
+
+	if (!talloc_reference(p2, c1))
+		goto out;
+
+	CHECK_PARENT("unref_reparent", c1, p1);
+
+	talloc_free(p1);
+
+	CHECK_PARENT("unref_reparent", c1, p2);
+
+	talloc_unlink(p2, c1);
+
+	CHECK_SIZE("unref_reparent", root, 1);
+
+	talloc_free(p2);
+	ret = true;
+out:
+ 	talloc_free(root);
+
+	return ret;
+}
+
+static bool test_lifeless(const struct torture_context *ctx)
+{
+	void *top = talloc_new(ctx);
+	char *parent, *child; 
+	void *child_owner = talloc_new(ctx);
+
+	parent = talloc_strdup(top, "parent");
+	if (!parent)
+		return false;
+	child = talloc_strdup(parent, "child");  
+	if (!child) {
+		talloc_free(parent);
+		return false;
+	}
+	if (!talloc_reference(child, parent)) {
+		talloc_free(parent);
+		return false;
+	}
+
+	if (!talloc_reference(child_owner, child)) {
+		talloc_unlink(child, parent);
+		talloc_free(parent);
+		return false;
+	}
+
+	talloc_unlink(top, parent);
+	talloc_free(child);
+	talloc_free(top);
+	talloc_free(child_owner);
+	talloc_free(child);
+
+	return true;
+}
+
+int main(int argc, char *argv[])
+{
+	plan_tests(5);
+	failtest_init(argc, argv);
+
+	talloc_enable_null_tracking();
+	if (null_context) {
+		ok1(test_unref_reparent(NULL) && test_lifeless(NULL));
+		/* This closes the leak, but don't free any other leaks! */
+		ok1(!talloc_chunk_from_ptr(null_context)->child);
+		talloc_disable_null_tracking();
+	}
+	failtest_exit(exit_status());
+}

ccan/talloc/test/run.c

@@ -948,7 +948,7 @@ int main(void)
 {
 	struct torture_context *ctx;
 
-	plan_tests(288);
+	plan_tests(289);
 	ctx = talloc_add_external(NULL, normal_realloc, test_lock, test_unlock);
 
 	torture_local_talloc(NULL);
@@ -979,6 +979,10 @@ int main(void)
 	ok(allocations_used() == 0, "%u allocations still used?",
 	   allocations_used());
 
+	/* This closes the leak, but make sure we're not freeing unexpected. */
+	ok1(!talloc_chunk_from_ptr(null_context)->child);
+	talloc_disable_null_tracking();
+	
 	return exit_status();
 }