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### 2649. [filesys.ts] [PDTS] `path` and `directory_entry` move ctors should not be `noexcept`

Section: 8.4.1 [filesys.ts::path.construct], 12 [filesys.ts::class.directory_entry] Status: TS Submitter: Stephan T. Lavavej Opened: 2014-02-03 Last modified: 2017-07-30

Priority: Not Prioritized

View all other issues in [filesys.ts::path.construct].

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Discussion:

Addresses: filesys.ts

`path`'s move ctor is marked `noexcept`, but it contains a `basic_string`. Similarly, `directory_entry`'s move ctor is marked `noexcept`, but it contains a `path`. This is affected by LWG 2319 "`basic_string`'s move constructor should not be `noexcept`".

[Beman Dawes 2014-02-27]

Issues 2637, 2638, 2641, and 2649 are concerned with signatures which should or should not be `noexcept`. I will provide unified proposed wording for these issues, possibly in a separate paper.

[21 May 2014 Beman Dawes provides wording. See 2319 for rationale. ]

[19 Jun 2014 LWG revises P/R to stay consistent with LWG issues.]

Proposed resolution:

Change 8 Class path [class.path]:

>     path() noexcept;

Change 8.4.1 path constructors [path.construct]:

>     path() noexcept;

Change 12 Class directory_entry [class.directory_entry]:

>     directory_entry() noexcept = default;