[5.7] Make the Regex type Sendable
#467
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This change makes `Regex`, `RegexComponent`, and its component types `Sendable`. Regex stores a `Program` instance, which lazily lowers the DSLTree into a compiled program. Without synchronization, this lazy compilation is unsafe under concurrency. This change uses atomic initialization for the compiled program.
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@swift-ci Please test |
stephentyrone
approved these changes
Jun 2, 2022
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This change makes
Regex,RegexComponent, and its component typesSendable.Regex stores a
Programinstance, which lazily lowers the DSLTree into a compiled program. Without synchronization, this lazy compilation is unsafe under concurrency. This change uses atomic initialization for the compiled program.This is a cherry-pick of #457.