Adopt @c.
#1377
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Adopt @c.
#1377
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This PR adopts the new `@c` attribute from [SE-0495](https://github.com/swiftlang/swift-evolution/blob/main/proposals/0495-cdecl.md). I've gated adoption on Swift 6.3.1 to give the compiler team time to finish implementing the feature. Older compilers will continue to use `@_cdecl`.
grynspan
requested review from
briancroom,
stmontgomery and
suzannaratcliff
as code owners
grynspan
added
the
tools integration
jerryjrchen
approved these changes
Oct 24, 2025
stmontgomery
approved these changes
Oct 24, 2025
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Holding onto this until |
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This PR adopts the new
@cattribute from SE-0495. I've gated adoption on Swift 6.3.1 to give the compiler team time to finish implementing the feature. Older compilers will continue to use@_cdecl.Checklist: