Build support for ~Copyable atop @_moveOnly
#65556
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We parse `~Copyable` in an inheritance clause of enum and struct decls as a synonym for the `@_moveOnly` attribute being added to that decl. This completely side-steps the additional infrastructure for generalized suppressed conformances in favor of a minimal solution. One benefit of this minimal solution is that it doesn't risk introducing any back-compat issues with older compilers or stdlibs. The trade-off is that we're more committed to supporting `@_moveOnly` in compiled modules in the future. In fact, this change does not deprecate `@_moveOnly` in any way. resolves rdar://106775103
kavon
requested review from
ahoppen,
bnbarham,
CodaFi,
DougGregor,
rintaro,
hborla,
slavapestov and
xedin
as code owners
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@swift-ci please test |
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@swift-ci please test linux |
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We parse
~Copyablein an inheritance clause of enum and struct decls as a synonym for the@_moveOnlyattribute being added to that decl. This completely side-steps the additional infrastructure for generalized suppressed conformances in favor of a minimal solution. One benefit of this minimal solution is that it doesn't risk introducing any back-compat issues with older compilers or stdlibs.The trade-off is that we're more committed to supporting
@_moveOnlyin compiled modules in the future. In fact, this change does not deprecate@_moveOnlyin any way.This is an alternate implementation of #64699
resolves rdar://106775103