diff options
Diffstat (limited to 'libstdc++-v3/include/ext/memory')
| -rw-r--r-- | libstdc++-v3/include/ext/memory | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/libstdc++-v3/include/ext/memory b/libstdc++-v3/include/ext/memory index adb15ce2992..dc04657180d 100644 --- a/libstdc++-v3/include/ext/memory +++ b/libstdc++-v3/include/ext/memory @@ -128,6 +128,40 @@ namespace __gnu_cxx { return __uninitialized_copy_n(__first, __count, __result, __iterator_category(__first)); } + + // An alternative version of uninitialized_copy_n that constructs + // and destroys objects with a user-provided allocator. + template<typename _InputIter, typename _Size, typename _ForwardIter, + typename _Allocator> + pair<_InputIter, _ForwardIter> + __uninitialized_copy_n_a(_InputIter __first, _Size __count, + _ForwardIter __result, + _Allocator __alloc) + { + _ForwardIter __cur = __result; + try + { + for (; __count > 0 ; --__count, ++__first, ++__cur) + __alloc.construct(&*__cur, *__first); + return pair<_InputIter, _ForwardIter>(__first, __cur); + } + catch(...) + { + std::_Destroy(__result, __cur, __alloc); + __throw_exception_again; + } + } + + template<typename _InputIter, typename _Size, typename _ForwardIter, + typename _Tp> + inline pair<_InputIter, _ForwardIter> + __uninitialized_copy_n_a(_InputIter __first, _Size __count, + _ForwardIter __result, + std::allocator<_Tp>) + { + return uninitialized_copy_n(__first, __count, __result); + } + /** * This class provides similar behavior and semantics of the standard * functions get_temporary_buffer() and return_temporary_buffer(), but |