[Concurrency] Look through caller-side default arguments for #isolation when computing the isolated actor expression for a call.
#72082
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…ble is from a `@preconcurrency` import.
…ion` when computing the isolated actor expression for a call.
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@swift-ci please smoke test |
…d as a default argument for a regular (not isolated) parameter.
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@swift-ci please smoke test |
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Resolves an issue where the actor isolation checker did not compute the correct isolation for a call when the callee used
#isolationas a default argument, which sometimes as missingawaiterrors whenawaitwas not written on the call, and manifested as a SILGen crash otherwise due to the underlying actor ofCurrentContextIsoaltionExprbeingnullptr.Note that this PR contains the commit from #72079
Resolves: rdar://123771114, rdar://123868148, rdar://123793070