[6.2][Concurrency] Fix task status and private storage sizes. #80644
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ActiveTaskStatusSize is 2 words, not 4, on most targets. PrivateStorageSize is measured in bytes, not words, so the Storage field needs to be a char[]. (cherry picked from commit d1cb5d9)
Iterating child tasks depends on knowing the size of AsyncTask, and changing the size of the task broke it. Instead of relying on mirroring the full structure in our out-of-process definitions, add a debug variable to libswift_Concurrency that contains the size of AsyncTask. While we're there, add some more validation to child task enumeration. Check each child task's metadata pointer to make sure that it actually points to the AsyncTask metadata, and have the inner loop also increment and check ChildTaskLoopCount to stop runaway iteration in that loop. rdar://148836760 (cherry picked from commit e305703)
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tbkka
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Apr 9, 2025
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ActiveTaskStatusSize is 2 words, not 4, on most targets.
PrivateStorageSize is measured in bytes, not words, so the Storage field needs to be a char[].
rdar://148836760