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18.11.4.16, after CA 053, get_constructor is not a TransformationTrait in some cases #87

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hubert-reinterpretcast opened this issue Sep 24, 2019 · 2 comments
Open

18.11.4.16, after CA 053, get_constructor is not a TransformationTrait in some cases #87

hubert-reinterpretcast opened this issue Sep 24, 2019 · 2 comments

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@hubert-reinterpretcast
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A TransformationTrait is required to have a type member.
@hubert-reinterpretcast hubert-reinterpretcast changed the title 18.11.4.16, get_constructor is not a TransformationTrait in some cases 18.11.4.16, after CA 053, get_constructor is not a TransformationTrait in some cases Sep 24, 2019
@camio
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camio commented Jan 27, 2020

AN: Yup, just like enable_if, see C++14 [meta.trans] "Each of the templates in this subclause shall be a TransformationTrait" versus [meta.trans.other] "If B is true, the member typedef type shall equal T; otherwise, there shall be no member type."

AN: Shall we leave this to an LWG issue? Do you want to open it or shall I send email to LWGChair?

AN: IMHO this should not be handled by us, here, but addressed by an issue.

@camio
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camio commented Jan 27, 2020

Left open as an issue to handle post-publication.

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