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Re:A Better Way to Implement Bit Fields by iainmerrick on Wednesday November 14, 2018 @06:35PM (#18455326)
Word-aligned? No, that's the opposite of packing!

I'd say "packing" is ambiguous and could refer to either bit-aligned or byte-aligned data. But if your fields are less than 8 bits wide, I would assume "packing" means bit-packing.

Re:A Better Way to Implement Bit Fields by loeg on Wednesday November 14, 2018 @07:33PM (#18455736)
E.g., if your packed struct is { bool a; uint32_t b; }, you probably don't want a totally misaligned-by-one-bit 'b'.