Add the @exclusivity attribute.
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The `@exclusivity(unchecked)` attribute can be used on variables to selectively disable exclusivity checking. For completeness, also the `@exclusivity(checked)` variant is supported: it turns on exclusivity checking for specific variables if exclusivity enforcement is disabled by the command line option. This new attribute is a missing implementation part of SE-0176 (https://github.com/apple/swift-evolution/blob/main/proposals/0176-enforce-exclusive-access-to-memory.md). rdar://31121356
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The
@exclusivity(unchecked)attribute can be used on variables to selectively disable exclusivity checking.For completeness, also the
@exclusivity(checked)variant is supported: it turns on exclusivity checking for specific variables if exclusivity enforcement is disabled by the command line option.This new attribute is a missing implementation part of SE-0176 (https://github.com/apple/swift-evolution/blob/main/proposals/0176-enforce-exclusive-access-to-memory.md).
rdar://31121356