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### 1525. Effects of `resize(size())` on a `vector`

Section: 24.3.11.3 [vector.capacity] Status: C++11 Submitter: BSI Opened: 2011-03-24 Last modified: 2016-01-28

Priority: Not Prioritized

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Discussion:

Addresses GB-117

24.3.11.3 [vector.capacity] p. 9 (Same as for 24.3.8.3 [deque.capacity] p. 1 i.e. `deque::resize`). There is no mention of what happens if `sz==size()`. While it obviously does nothing I feel a standard needs to say this explicitely.

Suggested resolution:

Append "If `sz == size()`, does nothing" to the effects.

[2011-03-24 Daniel comments]

During the edit of this issue some non-conflicting overlap with 2033 became obvious. `CopyInsertable` should be `MoveInsertable` and there is missing the `DefaultConstructible` requirements, but this should be fixed by 2033.

Proposed resolution:

Change 24.3.11.3 [vector.capacity] p. 9 as follows:

>     void resize(size_type sz);

> > 9 Effects: If `sz <= size()`, equivalent to `erase(begin() + sz, end());`. If `size() < sz`, appends `sz - size()` value-initialized elements to the sequence.

> > 10 Requires: `T` shall be `CopyInsertable` into `*this`.