On Fri, Mar 09, 2018 at 01:10:30PM -0800, Linus Torvalds wrote: > On Fri, Mar 9, 2018 at 12:05 PM, Kees Cook <keesc...@chromium.org> wrote: > > When max() is used in stack array size calculations from literal values > > (e.g. "char foo[max(sizeof(struct1), sizeof(struct2))]", the compiler > > thinks this is a dynamic calculation due to the single-eval logic, which > > is not needed in the literal case. This change removes several accidental > > stack VLAs from an x86 allmodconfig build: > > Ok, looks good. > > I just have a couple of questions about applying it. > > In particular, if this will help people working on getting rid of > VLA's in the short term, I can apply it directly. But if people who > are looking at it (anybody else than Kees?) don't much care, then this > might be a 4.17 thing or at least "random -mm queue"?
It's easy enough to work on the other VLA removals without basing on this, no rush. thanks, Tobin.