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Re: [PATCH 2/2] Change ptype/o to print bit offset
On 4/29/19 11:31 AM, Tom Tromey wrote:
> This is better, IMO, because now the "offset" of a bitfield is
> consistent with the offset of an ordinary member, referring to its
> offset from the start of the structure.
I agree with this. This is what I use ptype /o for (to get starting
offsets). pahole's format may make sense if the bits were numbered
N -> 0 instead of 0 -> N, or if bitfields used "high" bits instead of
"low" bits, but the convention I always see is to use 0 for LSB and
N for MSB. I'm also assuming that compilers start with the LSB when
assigning bits to bitfield members.
--
John Baldwin