Re: [tip:mm/pkeys] mm/pkeys: Fix siginfo ABI breakage caused by new u64 field

[Peter Zijlstra]

On Sat, Mar 05, 2016 at 02:50:06PM +0100, Ingo Molnar wrote:
> A more workable method would be to have a test .c file that includes all UAPI 
> structures in existence and defines a variable out of every single one, and then 
> generates a list of sizeof() values or so. But even that isn't perfect: a 
> structure might shift some fields forward, into a pre-existing hole, without 
> changing the sizeof? We'd need a list of all field offsets in all structures to be 
> really sure, and that's nasty.

pahole has such logic, right?