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/* Copyright (c) 2001-2004, Roger Dingledine.
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
* Copyright (c) 2007-2020, The Tor Project, Inc. */
/* See LICENSE for licensing information */
#include "orconfig.h"
#include "core/or/or.h"
#include "test/test.h"
#include "test/ptr_helpers.h"
#include <stdint.h>
#include <limits.h>
/** Assert that <b>a</b> can be cast to void * and back. */
static void
assert_int_voidptr_roundtrip(int a)
{
intptr_t ap = (intptr_t)a;
void *b = cast_intptr_to_voidstar(ap);
intptr_t c = cast_voidstar_to_intptr(b);
void *d = cast_intptr_to_voidstar(c);
tt_assert(ap == c);
tt_assert(b == d);
done:
return;
}
/** Test for possibility of casting `int` to `void *` and back. */
static void
test_int_voidstar_interop(void *arg)
{
int a;
(void)arg;
for (a = -1024; a <= 1024; a++) {
assert_int_voidptr_roundtrip(a);
}
for (a = INT_MIN; a <= INT_MIN+1024; a++) {
assert_int_voidptr_roundtrip(a);
}
for (a = INT_MAX-1024; a < INT_MAX; a++) {
assert_int_voidptr_roundtrip(a);
}
a = 1;
for (unsigned long i = 0; i < sizeof(int) * 8; i++) {
assert_int_voidptr_roundtrip(a);
a = (a << 1);
}
}
/** Assert that <b>a</b> can be cast to void * and back. */
static void
assert_uint_voidptr_roundtrip(unsigned int a)
{
uintptr_t ap = (uintptr_t)a;
void *b = cast_uintptr_to_voidstar(ap);
uintptr_t c = cast_voidstar_to_uintptr(b);
void *d = cast_uintptr_to_voidstar(c);
tt_assert(ap == c);
tt_assert(b == d);
done:
return;
}
/** Test for possibility of casting `int` to `void *` and back. */
static void
test_uint_voidstar_interop(void *arg)
{
unsigned int a;
(void)arg;
for (a = 0; a <= 1024; a++) {
assert_uint_voidptr_roundtrip(a);
}
for (a = UINT_MAX-1024; a < UINT_MAX; a++) {
assert_uint_voidptr_roundtrip(a);
}
a = 1;
for (unsigned long i = 0; i < sizeof(int) * 8; i++) {
assert_uint_voidptr_roundtrip(a);
a = (a << 1);
}
}
struct testcase_t slow_ptr_tests[] = {
{ .name = "int_voidstar_interop",
.fn = test_int_voidstar_interop,
.flags = 0,
.setup = NULL,
.setup_data = NULL },
{ .name = "uint_voidstar_interop",
.fn = test_uint_voidstar_interop,
.flags = 0,
.setup = NULL,
.setup_data = NULL },
END_OF_TESTCASES
};
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