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Fix some type punning warnings, avoiding forming a reference to non-constructed objects

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Ion Gaztañaga
2018-09-15 00:52:18 +02:00
parent 73ad892393
commit f28fe5d33e
1 changed files with 12 additions and 12 deletions
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24
include/boost/container/detail/advanced_insert_int.hpp
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@@ -128,11 +128,11 @@ struct insert_value_initialized_n_proxy
void copy_n_and_update(Allocator &a, Iterator p, size_type n) const void copy_n_and_update(Allocator &a, Iterator p, size_type n) const
{ {
for (; 0 < n; --n, ++p){ for (; 0 < n; --n, ++p){
typename aligned_storage<sizeof(value_type), alignment_of<value_type>::value>::type stor; typename aligned_storage<sizeof(value_type), alignment_of<value_type>::value>::type v;
value_type &v = *static_cast<value_type *>(static_cast<void *>(stor.data)); value_type *vp = reinterpret_cast<value_type *>(v.data);
alloc_traits::construct(a, &v); alloc_traits::construct(a, vp);
value_destructor<Allocator> on_exit(a, v); (void)on_exit; value_destructor<Allocator> on_exit(a, *vp); (void)on_exit;
*p = ::boost::move(v); *p = ::boost::move(*vp);
} }
} }
}; };
@@ -151,11 +151,11 @@ struct insert_default_initialized_n_proxy
{ {
if(!is_pod<value_type>::value){ if(!is_pod<value_type>::value){
for (; 0 < n; --n, ++p){ for (; 0 < n; --n, ++p){
typename aligned_storage<sizeof(value_type), alignment_of<value_type>::value>::type stor; typename aligned_storage<sizeof(value_type), alignment_of<value_type>::value>::type v;
value_type &v = *static_cast<value_type *>(static_cast<void *>(stor.data)); value_type *vp = reinterpret_cast<value_type *>(v.data);
alloc_traits::construct(a, &v, default_init); alloc_traits::construct(a, vp, default_init);
value_destructor<Allocator> on_exit(a, v); (void)on_exit; value_destructor<Allocator> on_exit(a, *vp); (void)on_exit;
*p = ::boost::move(v); *p = ::boost::move(*vp);
} }
} }
} }
@@ -289,7 +289,7 @@ struct insert_emplace_proxy
{ {
BOOST_ASSERT(n ==1); (void)n; BOOST_ASSERT(n ==1); (void)n;
typename aligned_storage<sizeof(value_type), alignment_of<value_type>::value>::type v; typename aligned_storage<sizeof(value_type), alignment_of<value_type>::value>::type v;
value_type *vp = static_cast<value_type *>(static_cast<void *>(v.data)); value_type *vp = reinterpret_cast<value_type *>(v.data);
alloc_traits::construct(a, vp, alloc_traits::construct(a, vp,
::boost::forward<Args>(get<IdxPack>(this->args_))...); ::boost::forward<Args>(get<IdxPack>(this->args_))...);
BOOST_TRY{ BOOST_TRY{
@@ -400,7 +400,7 @@ struct insert_emplace_proxy_arg##N\
BOOST_ASSERT(n == 1); (void)n;\ BOOST_ASSERT(n == 1); (void)n;\
typename aligned_storage<sizeof(value_type), alignment_of<value_type>::value>::type v;\ typename aligned_storage<sizeof(value_type), alignment_of<value_type>::value>::type v;\
BOOST_ASSERT((((size_type)(&v)) % alignment_of<value_type>::value) == 0);\ BOOST_ASSERT((((size_type)(&v)) % alignment_of<value_type>::value) == 0);\
value_type *vp = static_cast<value_type *>(static_cast<void *>(v.data));\ value_type *vp = reinterpret_cast<value_type *>(v.data);\
alloc_traits::construct(a, vp BOOST_MOVE_I##N BOOST_MOVE_MFWD##N);\ alloc_traits::construct(a, vp BOOST_MOVE_I##N BOOST_MOVE_MFWD##N);\
BOOST_TRY{\ BOOST_TRY{\
*p = ::boost::move(*vp);\ *p = ::boost::move(*vp);\