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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libstdc++-v3/] [testsuite/] [29_atomics/] [atomic/] [operators/] [pointer_partial_void.cc] - Rev 749
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// { dg-require-atomic-builtins "" } // { dg-options "-std=gnu++0x" } // Copyright (C) 2012 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING3. If not see // <http://www.gnu.org/licenses/>. #include <atomic> #include <cstdlib> //std::abs #include <testsuite_hooks.h> // pointer arithimetic vs. atomic<void*>. // atomic<void*> vs. explicitly specialized w/o operators, like atomic_bool? int main(void) { // bool test __attribute__((unused)) = true; using namespace std; typedef int value_type; const size_t n = 2; value_type value = 42; value_type* p = &value; void* vp = p; ptrdiff_t dist(0); atomic<void*> a(vp); // operator++ void* vp2(a); a++; void* vp3(a); dist = reinterpret_cast<char*>(vp2) - reinterpret_cast<char*>(vp3); // VERIFY ( std::abs(dist) == sizeof(void*)); // operator-- void* vp4(a); a--; void* vp5(a); dist = reinterpret_cast<char*>(vp4) - reinterpret_cast<char*>(vp5); // VERIFY ( std::abs(dist) == sizeof(void*)); // operator+= void* vp6(a); a+=n; void* vp7(a); dist = reinterpret_cast<char*>(vp6) - reinterpret_cast<char*>(vp7); // VERIFY ( std::abs(dist) == sizeof(void*) * n); // operator-= void* vp8(a); a-=n; void* vp9(a); dist = reinterpret_cast<char*>(vp8) - reinterpret_cast<char*>(vp9); //VERIFY ( std::abs(dist) == sizeof(void*) * n); return 0; }
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