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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/29_atomics/atomic/operators/pointer_partial_void.cc
1 // { dg-do run { target c++11 } }
2 // { dg-require-atomic-builtins "" }
4 // Copyright (C) 2012-2016 Free Software Foundation, Inc.
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 3, or (at your option)
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING3. If not see
19 // <http://www.gnu.org/licenses/>.
22 #include <cstdlib> //std::abs
23 #include <testsuite_hooks.h>
25 // pointer arithimetic vs. atomic<void*>.
26 // atomic<void*> vs. explicitly specialized w/o operators, like atomic_bool?
31 typedef int value_type
;
33 value_type value
= 42;
34 value_type
* p
= &value
;
36 ptrdiff_t __attribute__((unused
)) dist(0);
44 dist
= reinterpret_cast<char*>(vp2
) - reinterpret_cast<char*>(vp3
);
45 VERIFY ( std::abs(dist
) == 1 );
51 dist
= reinterpret_cast<char*>(vp4
) - reinterpret_cast<char*>(vp5
);
52 VERIFY ( std::abs(dist
) == 1 );
58 dist
= reinterpret_cast<char*>(vp6
) - reinterpret_cast<char*>(vp7
);
59 VERIFY ( std::abs(dist
) == n
);
65 dist
= reinterpret_cast<char*>(vp8
) - reinterpret_cast<char*>(vp9
);
66 VERIFY ( std::abs(dist
) == n
);