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Vendor import of libc++ trunk r290819:
[FreeBSD/FreeBSD.git] / test / std / language.support / support.dynamic / new.delete / new.delete.array / sized_delete_array_calls_unsized_delete_array.pass.cpp
1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // test sized operator [] delete calls the unsized operator [] delete.
11 // When sized operator delete [] is not available (ex C++11) then the unsized
12 // operator delete [] is called directly.
13
14 // UNSUPPORTED: sanitizer-new-delete
15
16 #include <new>
17 #include <cstddef>
18 #include <cstdlib>
19 #include <cassert>
20
21 #include "test_macros.h"
22
23 int delete_called = 0;
24 int delete_nothrow_called = 0;
25
26 void operator delete[](void* p) TEST_NOEXCEPT
27 {
28     ++delete_called;
29     std::free(p);
30 }
31
32 void operator delete[](void* p, const std::nothrow_t&) TEST_NOEXCEPT
33 {
34     ++delete_nothrow_called;
35     std::free(p);
36 }
37
38 // NOTE: Use a class with a non-trivial destructor as the test type in order
39 // to ensure the correct overload is called.
40 // C++14 5.3.5 [expr.delete]p10
41 // - If the type is complete and if, for the second alternative (delete array)
42 //   only, the operand is a pointer to a class type with a non-trivial
43 //   destructor or a (possibly multi-dimensional) array thereof, the function
44 //   with two parameters is selected.
45 // - Otherwise, it is unspecified which of the two deallocation functions is
46 //   selected.
47 struct A { ~A() {} };
48
49 int main()
50 {
51     A* x = new A[3];
52     assert(0 == delete_called);
53     assert(0 == delete_nothrow_called);
54
55     delete [] x;
56     assert(1 == delete_called);
57     assert(0 == delete_nothrow_called);
58 }