[6.2] Change send-never-sendable of isolated partial applies to use SIL level info instead of AST info. #82196
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…el info instead of AST info. The reason I am doing this is that we have gotten reports about certain test cases where we are emitting errors about self being captured in isolated closures where the sourceloc is invalid. The reason why this happened is that the decl returned by getIsolationCrossing did not have a SourceLoc since self was being used implicitly. In this commit I fix that issue by using SIL level information instead of AST level information. This guarantees that we get an appropriate SourceLoc. As an additional benefit, this fixed some extant errors where due to some sort of bug in the AST, we were saying that a value was nonisolated when it was actor isolated in some of the error msgs. rdar://151955519 (cherry picked from commit f312369)
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hborla
approved these changes
Jun 12, 2025
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Explanation: This PR changes how we emit errors when sending values that can never be sent to use SIL level routines instead of AST level routines. Because we were using AST level routines, we attempted to emit an error for the self sourceloc which in a method does not exist. So we were emitting the error at . Now that we are using the SIL level routines, we emit the actual error at the use source loc and use the name of the captured variable.
Scope: Just changes how we emit an error. The actual code that identifies errors is unchanged.
Resolves: rdar://151955519
Main PR: #82149
Risk: Low. This does not impact where we emit errors... it just changes the way the errors look.
Testing: Added compiler tests
Reviewer: @xedin