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A comment on Cross-platform Rust rewrite of the GNU coreutils. Parent comment

Re:Cross-platform Rust rewrite of the GNU coreutils by _kst_ on Tuesday March 22, 2016 @02:54PM (#11338985)
The number of bits in a byte is specified by the CHAR_BIT macro, which is required to be at least 8. It's commonly larger than 8 on C compilers for some DSPs, but almost universally 8 for hosted implementations.

POSIX specifically requires it to be exactly 8.

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