[5.9] MoveOnlyChecker: Look through convert_function of nonescaping closures.
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…res. Like a nested partial_apply reabstraction, but without the thunk, these change the representation of the function but can't escape it without breaking the nonescaping closure promotion. rdar://111060678
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@swift-ci Please test |
gottesmm
approved these changes
Jun 21, 2023
DougGregor
approved these changes
Jun 21, 2023
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Issue: rdar://111060678
• Explanation: Certain uses of nonescaping closures that capture noncopyable values as arguments to a generic function call would cause the compiler to incorrectly raise an error about unknown use of the noncopyable value.
• Scope of Issue: Reject-valid bug.
• Origination: Noncopyable types feature work.
• Risk: Low -- Change only affects new code adopting noncopyable types. The fix is a one-liner filling in an unhandled SIL instruction in the move-only checker.
• Reviewed By: @gottesmm
• Automated Testing: Swift CI
• Dependencies: None
• Builder Impact: Not applicable
• Directions for QE: None