The C standard allows for arbitrary padding for alignment reasons but in practice how structs are padded is pretty consistent among most C compilers.

Also, most good structs are laid out such that no padding is required.

So you can use pack quite portably in most cases. But, yes, there are exceptions.

- tye        

In reply to Re^2: Using ioctl() by tye
in thread Using ioctl() by chriswalsh

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