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52066eae | 1 | // { dg-do run { target c++11 } } |
2f6ca9d3 RS |
2 | |
3 | // 2014-04-16 Rüdiger Sonderfeld <ruediger@c-plusplus.de> | |
4 | ||
a5544970 | 5 | // Copyright (C) 2014-2019 Free Software Foundation, Inc. |
2f6ca9d3 RS |
6 | // |
7 | // This file is part of the GNU ISO C++ Library. This library is free | |
8 | // software; you can redistribute it and/or modify it under the terms | |
9 | // of the GNU General Public License as published by the Free Software | |
10 | // Foundation; either version 3, or (at your option) any later | |
11 | // version. | |
12 | ||
13 | // This library is distributed in the hope that it will be useful, but | |
14 | // WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | // General Public License for more details. | |
17 | ||
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this library; see the file COPYING3. If not see | |
20 | // <http://www.gnu.org/licenses/>. | |
21 | ||
22 | // C++11 [ptr.align] (20.6.5): std::align | |
23 | ||
facb4d1b JW |
24 | // { dg-require-cstdint "" } |
25 | ||
2f6ca9d3 RS |
26 | #include <memory> |
27 | #include <cstdint> | |
28 | #include <testsuite_hooks.h> | |
29 | ||
30 | void | |
31 | test01() | |
32 | { | |
2f6ca9d3 RS |
33 | size_t space = 100; |
34 | void* ptr = new char[space]; | |
35 | char* const orig_ptr = static_cast<char*>(ptr); | |
36 | char* old_ptr = orig_ptr; | |
37 | const size_t orig_space = space; | |
38 | size_t old_space = space; | |
39 | const size_t alignment = 16; | |
40 | const size_t size = 10; | |
41 | while( void* const r = std::align(alignment, size, ptr, space) ) | |
42 | { | |
43 | VERIFY( r == ptr ); | |
44 | uintptr_t p = reinterpret_cast<uintptr_t>(ptr); | |
45 | VERIFY( p % alignment == 0 ); | |
46 | char* const x = static_cast<char*>(ptr); | |
47 | VERIFY( x - old_ptr == old_space - space ); | |
48 | VERIFY( (void*)x < (void*)(orig_ptr + orig_space) ); | |
49 | VERIFY( (void*)(x + size) < (void*)(orig_ptr + orig_space) ); | |
50 | ptr = x + size; | |
51 | old_ptr = x; | |
52 | old_space = space; | |
53 | space -= size; | |
54 | } | |
55 | delete [] orig_ptr; | |
56 | } | |
57 | ||
58 | int main() | |
59 | { | |
60 | test01(); | |
61 | } |