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Swift 6.3 support#844

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johnfairh wants to merge 2 commits into
jpsim:mainfrom
johnfairh:jf-swift63
Open

Swift 6.3 support#844
johnfairh wants to merge 2 commits into
jpsim:mainfrom
johnfairh:jf-swift63

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@johnfairh

@johnfairh johnfairh commented Jun 23, 2026

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Jumping straight to 6.3 from 6.0; first step on the road to 6.4.

Bazel: never met him before but failed with errors about "missing LC_UUID" in wrapped_clang that are fixed in "apple_support 1.19.0" - leave any other updates to experts.

Take known Swift from 6.0 to 6.3.
CI to macOS 26, Xcode 26.5.
SourceKit / SwiftLang attribute updates.

Minor fixtures changes.
@johnfairh johnfairh requested review from jpsim and removed request for jpsim June 23, 2026 13:07
@johnfairh

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@SimplyDanny could you take a look over these changes please? Standard stuff but I haven't tried to separate out the differences between 6.1/6.2/6.3.

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LGTM!

// Removed in Swift 6.3
expected.subtract([._section, ._used, ._resultDependsOnSelf, .cdecl])
#else
// added in Swift 6.3

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Nit ...

Suggested change
// added in Swift 6.3
// Added in Swift 6.3

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