Fix reading files larger than 2GiB on macOS#3

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stuart8c wants to merge 2 commits intobuergmann:mainfrom

Commits on Apr 13, 2026

Fix silent read failure in load(): use perror and exit instead of painting over error message
Stuart Cunningham
committed
Limit read() to 0x7FFF0000 bytes per call to fix >2GiB files on macOS
Stuart Cunningham
committed