64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
/*
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* Copyright (c) 2004 Michael Stevens
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* Use, modification and distribution are subject to the
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* Boost Software License, Version 1.0. (See accompanying file
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* LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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/*
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* Test placement new and array placement new for uBLAS
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* See if base pointer is effected by array count cookie
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*/
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#include <boost/numeric/ublas/storage.hpp>
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#include <iostream>
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#include <new>
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// User defined type to capture base pointer on construction
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class udt {
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public:
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udt () {
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base_pointer = this;
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}
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~udt () {} // required for GCC prior to 3.4 to generate cookie
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static udt* base_pointer;
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};
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udt* udt::base_pointer;
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int main ()
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{
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udt a;
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udt* ap = &a;
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// Capture placement new offsets for a udt
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new (ap) udt;
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int new_offset = int (udt::base_pointer - ap);
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new (ap) udt [1];
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int array_new_offset = int (udt::base_pointer - ap);
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// Print offsets - we expect 0,0 or 0,sizeof(std::size_t)
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std::cout << new_offset <<','<< array_new_offset << std::endl;
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// Return status
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if (new_offset != 0)
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return -1; // Very bad if new has an offset
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#ifdef BOOST_UBLAS_USEFUL_ARRAY_PLACEMENT_NEW
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bool expect_array_offset = false;
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#else
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bool expect_array_offset = true;
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#endif
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// Check match between config and array
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if (!expect_array_offset && array_new_offset != 0) {
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return -2; // Bad config should not enable array new
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}
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if (expect_array_offset && array_new_offset == 0) {
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return -3; // Config could enable array new
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}
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return 0;
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}
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