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### 1426. `multiset` constructor accepting an allocator as a single parameter should be explicit

Section: 22.4.7 [multiset] Status: C++11 Submitter: Japan Opened: 2010-08-25 Last modified: 2016-01-28

Priority: Not Prioritized

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Discussion:

Addresses JP-9

Constructor accepting an allocator as a single parameter should be qualified as explicit.

[ Resolved in Rapperswil by a motion to directly apply the words from the ballot comment in N3102. ]

Proposed resolution:

Add explicit.

    namespace std {
    template <class Key, class Compare = less<Key>,
    class Allocator = allocator<Key> >
    class multiset {
    public:
    ...
    explicit multiset(const Allocator&);