On Wed, 2016-09-28 at 05:57 -0700, Eric Dumazet wrote: > Note that some programs could fail to compile with the added union > anyway. > > Some gcc versions are unable to compile a static init with an union > > struct inet_diag_req_v2 foo = { .pad = 0, sdiag_family = AF_INET, }; > > When I cooked my recent fq commit I simply removed a pad and replaced > it : > > git show fefa569a9d4bc4 -- include
This is a bit different of course, since struct tc_fq_qd_stats is only one way : Kernel produces the content and gives it to user space. User space should probably not need to initialize such a structure, but who knows what a programmer can write ;)