This page is a snapshot from the LWG issues list, see the Library Active Issues List for more information and the meaning of New status.
Section: 22.214.171.124.2 [util.smartptr.shared.const] Status: New Submitter: United States Opened: 2017-02-03 Last modified: 2017-07-15
View all other issues in [util.smartptr.shared.const].
View all issues with New status.
Discussion:Addresses US 130
There is no ability to supply an allocator for the control block when constructing a shared_ptr from a unique_ptr. Note that no further shared_ptr constructors need an allocator, as they all have pre-existing control blocks that are shared, or already have the allocator overload.
Proposed change: Add an additional shared_ptr constructor, template <class Y, class D, class A> shared_ptr(unique_ptr<Y, D>&& r, A alloc), with the same semantics as the existing constructor taking a unique_ptr, but using the alloc argument to supply memory as required.
[2017-07 Toronto Thurs Issue Prioritization]
Priority 3; Alisdair to provide wording