Fix the fadvise handling of large offsets on FreeBSD.#1318
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sunfishcode merged 3 commits intomainfrom Feb 11, 2025
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On FreeBSD, when a large `u64` converts to a negative offset, we add some special-case behavior to hide the fact that this conversion is happening. Clarify the comments, update the code to do a proper no-op in the case of a negative offset, and use the correct length in the case of an overflowing offset+length.
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On FreeBSD, when a large
u64converts to a negative offset, we add some special-case behavior to hide the fact that this conversion is happening. Clarify the comments, update the code to do a proper no-op in the case of a negative offset, and use the correct length in the case of an overflowing offset+length.