On 20/05/2020 20:17, David Miller wrote: > From: Antonio Quartulli <a...@unstable.cc> > Date: Wed, 20 May 2020 10:39:33 +0200 > >> I don't think it's BUILD_BUG_ON()'s fault, because qcb->data is passed >> to sizeof() first. >> >> My best guess is that gcc is somewhat optimizing the sizeof(gcb->data) >> and thus leaving the gcb variable unused. > > If you remove the argument from the function but leave the BUILD_BUG_ON() > calls the same, the compilation will fail. > > Any such optimization is therefore unreasonable. > > The variable is used otherwise compilation would not fail when you > remove it right?
You're correct. I guess this should be reported to gcc then. Regards, -- Antonio Quartulli