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2955.to_chars /from_chars depend onstd::string

Section: 22.2[utility]Status:ResolvedSubmitter: Jens MaurerOpened: 2017-04-11Last modified: 2017-07-16

Priority:Not Prioritized

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Discussion:

We addedfrom_chars_result andto_chars_result into<utility>, but those containerror_code instances, which come from<system_error>. This creates a circular dependency issue which is somewhat difficult to resolve, aserror_code depends onerror_category which has virtuals that returnstring — it would effectively force putting all of<string> into<utility>.

Since (I believe) nobody has implemented this yet, would there be support for changing the member offrom_chars_result /to_chars_result to anerrc instead of anerror_code (as a fast-track DR against 17)?

[2017-06-27, Jens comments]

The paperP0682R0 "Repairing elementary string conversions" is available in the pre-Toronto mailing and provides wording.

[2017-07 Toronto]

Resolved by the adoption ofP0682R1 in Toronto.

Proposed resolution: