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Unordered: Remove use of try..catch.

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So that it'll work when exceptions are disabled.

[SVN r79679]
This commit is contained in:
Daniel James
2012-07-22 20:14:20 +00:00
parent 7c968fd38d
commit 61516be1db
1 changed files with 33 additions and 8 deletions
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41
include/boost/unordered/detail/allocate.hpp
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@ -1120,17 +1120,42 @@ namespace boost { namespace unordered { namespace detail {
#else
template <typename AllocTraits, typename T>
struct value_construct
{
typedef BOOST_DEDUCED_TYPENAME AllocTraits::allocator_type allocator;
allocator& alloc;
T* ptr;
value_construct(allocator& a, T* p) : alloc(a), ptr(p)
{
AllocTraits::construct(alloc, ptr, T());
}
void release()
{
ptr = 0;
}
~value_construct()
{
if (ptr) AllocTraits::destroy(alloc, ptr);
}
private:
value_construct(value_construct const&);
value_construct& operator=(value_construct const&);
};
template <typename Alloc, typename T, BOOST_UNORDERED_EMPLACE_TEMPLATE>
inline void construct_node(Alloc& a, T* p, BOOST_UNORDERED_EMPLACE_ARGS)
{
boost::unordered::detail::allocator_traits<Alloc>::construct(a, p, T());
try {
boost::unordered::detail::construct_impl(
p->value_ptr(), BOOST_UNORDERED_EMPLACE_FORWARD);
} catch(...) {
boost::unordered::detail::allocator_traits<Alloc>::destroy(a, p);
throw;
}
value_construct<boost::unordered::detail::allocator_traits<Alloc>, T>
construct_guard(a, p);
boost::unordered::detail::construct_impl(
p->value_ptr(), BOOST_UNORDERED_EMPLACE_FORWARD);
construct_guard.release();
}
template <typename Alloc, typename T>