Hi, all.
When calling the merge() member function of a boost::heap::d_ary_heap, is the heap passed in not supposed to be emptied?
Here's my test program:
[''
#include
#include
#include
#include
#include
#include
template <typename Heap>
void test_heap_merge_memfun()
{
Heap heap_1, heap_2;
heap_1.push(3);
heap_1.push(5);
heap_1.push(1);
heap_2.push(2);
heap_2.push(4);
heap_2.push(0);
heap_1.merge(heap_2);
std::cout << " heap_2";
if (!heap_2.empty())
{
BOOST_CHECK(4 == heap_2.top());
heap_2.pop();
BOOST_CHECK(2 == heap_2.top());
heap_2.pop();
BOOST_CHECK(0 == heap_2.top());
heap_2.pop();
std::cout << " not";
}
std::cout << " emptied." << std::endl;
BOOST_CHECK(heap_2.empty());
BOOST_CHECK(5 == heap_1.top());
heap_1.pop();
BOOST_CHECK(4 == heap_1.top());
heap_1.pop();
BOOST_CHECK(3 == heap_1.top());
heap_1.pop();
BOOST_CHECK(2 == heap_1.top());
heap_1.pop();
BOOST_CHECK(1 == heap_1.top());
heap_1.pop();
BOOST_CHECK(0 == heap_1.top());
heap_1.pop();
BOOST_CHECK(heap_1.empty());
}
int test_main(int argc, char** argv)
{
test_heap_merge_memfun<
boost::heap::d_ary_heap<
int
, boost::heap::arity<4>
, boost::heap::mutable_<true>
>
>();
test_heap_merge_memfun();
test_heap_merge_memfun();
test_heap_merge_memfun();
test_heap_merge_memfun<
boost::heap::skew_heap
>();
return 0;
}
'']
When I run this program, I see that all the other heap types empty the heap passed in.
I use gcc 4.2.1 with Apple clang version 4.0 on MacOSX 10.8
Cromwell D. Enage
