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Merge branch 'feature/plus_zero' of https://github.com/RobertLeahy/container into RobertLeahy-feature/plus_zero

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Ion Gaztañaga
2020-01-14 16:09:30 +01:00
parent 312f2fddd6 d4a0917821
commit 7db26b7446
2 changed files with 52 additions and 0 deletions
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2
include/boost/container/deque.hpp
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@@ -234,6 +234,8 @@ class deque_iterator
deque_iterator& operator+=(difference_type n) BOOST_NOEXCEPT_OR_NOTHROW
{
if (!n)
return *this;
BOOST_ASSERT(!!m_cur);
difference_type offset = n + (this->m_cur - this->m_first);
const difference_type block_size = this->m_last - this->m_first;

50
test/null_iterators_test.cpp
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@@ -24,6 +24,7 @@
#include <boost/core/lightweight_test.hpp>
#include <boost/static_assert.hpp>
#include <cstring>
#include <iterator>
#include <new>
using namespace boost::container;
@@ -56,6 +57,40 @@ BOOST_INTRUSIVE_INSTANTIATE_DEFAULT_TYPE_TMPLT(const_reverse_iterator)
}}} //namespace boost::container::test {
template<class RandomAccessIterator>
void check_plus_zero_impl(RandomAccessIterator it)
{
RandomAccessIterator cpy(it + 0);
BOOST_TEST(cpy == it);
}
template<class Container, class Category>
void check_plus_zero(const Category&)
{}
template<class Container>
void check_plus_zero(const std::random_access_iterator_tag&)
{
check_plus_zero_impl(typename Container::iterator());
check_plus_zero_impl(typename Container::const_iterator());
check_plus_zero_impl(typename Container::reverse_iterator());
check_plus_zero_impl(typename Container::const_reverse_iterator());
Container c;
check_plus_zero_impl(c.begin());
check_plus_zero_impl(c.cbegin());
check_plus_zero_impl(c.rbegin());
check_plus_zero_impl(c.crbegin());
}
template<class Container>
void check_plus_zero()
{
typedef typename Container::iterator iterator;
typedef typename std::iterator_traits<iterator>::iterator_category category;
category tag;
check_plus_zero<Container>(tag);
}
template<class Container>
void check_null_iterators()
{
@@ -77,20 +112,35 @@ void check_null_iterators()
int main()
{
check_null_iterators< vector<int> >();
check_plus_zero< vector<int> >();
check_null_iterators< deque<int> >();
check_plus_zero< deque<int> >();
check_null_iterators< stable_vector<int> >();
check_plus_zero< stable_vector<int> >();
check_null_iterators< static_vector<int, 1> >();
check_plus_zero< static_vector<int, 1> >();
check_null_iterators< string >();
check_plus_zero< string >();
check_null_iterators< list<int> >();
check_plus_zero< list<int> >();
check_null_iterators< slist<int> >();
check_plus_zero< slist<int> >();
check_null_iterators< map<int, int> >();
check_plus_zero< map<int, int> >();
check_null_iterators< multimap<int, int> >();
check_plus_zero< multimap<int, int> >();
check_null_iterators< set<int> >();
check_plus_zero< set<int> >();
check_null_iterators< multiset<int> >();
check_plus_zero< multiset<int> >();
check_null_iterators< flat_set<int> >();
check_plus_zero< flat_set<int> >();
check_null_iterators< flat_multiset<int> >();
check_plus_zero< flat_multiset<int> >();
check_null_iterators< flat_map<int, int> >();
check_plus_zero< flat_map<int, int> >();
check_null_iterators< flat_multimap<int, int> >();
check_plus_zero< flat_multimap<int, int> >();
return boost::report_errors();
}