1// Copyright 2017 Antony Polukhin.
2//
3// Distributed under the Boost Software License, Version 1.0.
4// (See accompanying file LICENSE_1_0.txt
5// or copy at http://www.boost.org/LICENSE_1_0.txt)
6
7#include <boost/stacktrace/detail/void_ptr_cast.hpp>
8
9#include <boost/core/lightweight_test.hpp>
10
11int foo1_func(int) { return 0; }
12void foo2_func(int, int, ...) {}
13
14struct test_struct {
15 int foo1_memb(int) const { return 0; }
16 void foo2_memb(int, int, ...) {}
17};
18
19template <class F1, class F2>
20void test(F1 foo1, F2 foo2) {
21 using boost::stacktrace::detail::void_ptr_cast;
22
23 typedef void(*void_f_ptr)();
24
25 // Function/variable to void(*)()
26 void_f_ptr fp1 = void_ptr_cast<void_f_ptr>(foo1);
27 void_f_ptr fp2 = void_ptr_cast<void_f_ptr>(foo2);
28 BOOST_TEST(fp1);
29 BOOST_TEST(fp2);
30 BOOST_TEST(fp1 != fp2);
31
32 // Function/variable to void*
33 void* vp1 = void_ptr_cast<void*>(foo1);
34 void* vp2 = void_ptr_cast<void*>(foo2);
35 BOOST_TEST(vp1);
36 BOOST_TEST(vp2);
37 BOOST_TEST(vp1 != vp2);
38
39 // void* to void(*)()
40 void_f_ptr fp1_2 = void_ptr_cast<void_f_ptr>(vp1);
41 void_f_ptr fp2_2 = void_ptr_cast<void_f_ptr>(vp2);
42 BOOST_TEST(fp1_2);
43 BOOST_TEST(fp2_2);
44 BOOST_TEST(fp1_2 != fp2_2);
45 BOOST_TEST(fp1 == fp1_2);
46 BOOST_TEST(fp2 == fp2_2);
47
48 // void(*)() to void*
49 BOOST_TEST(void_ptr_cast<void*>(fp1) == vp1);
50 BOOST_TEST(void_ptr_cast<void*>(fp2) == vp2);
51
52 // void(*)() to function/variable
53 BOOST_TEST(void_ptr_cast<F1>(fp1) == foo1);
54 BOOST_TEST(void_ptr_cast<F2>(fp2) == foo2);
55
56 // void* to function/variable
57 BOOST_TEST(void_ptr_cast<F1>(vp1) == foo1);
58 BOOST_TEST(void_ptr_cast<F2>(vp2) == foo2);
59}
60
61int main() {
62 // Testing for functions
63 test(foo1: foo1_func, foo2: foo2_func);
64
65 typedef void(func_t)();
66 test(
67 foo1: boost::stacktrace::detail::void_ptr_cast<func_t* const>(v: foo1_func),
68 foo2: boost::stacktrace::detail::void_ptr_cast<func_t* const>(v: foo2_func)
69 );
70
71 // Testing for variables (just in case...)
72 int i = 0;
73 double j= 1;
74 test(foo1: &i, foo2: &j);
75
76
77
78 return boost::report_errors();
79}
80

source code of boost/libs/stacktrace/test/test_void_ptr_cast.cpp