On Mon, Feb 25, 2019 at 04:07:12PM -0800, Linus Torvalds wrote: > On Mon, Feb 25, 2019 at 4:03 PM Qian Cai <c...@lca.pw> wrote: > > > > > > Of course, that's just gcc. I have no idea what llvm ends up doing. > > > > Clang 7.0: > > > > # clang -O2 -S -Wall /tmp/test.c > > /tmp/test.c:46:6: warning: variable 'ret' is used uninitialized whenever > > 'if' > > condition is false [-Wsometimes-uninitialized] > > Ok, good. > > Do we have any clang builds in any of the zero-day robot > infrastructure or something? Should we? > > And maybe this was how Dan noticed the problem in the first place? Or > is it just because of his eagle-eyes?
He didn't say specifically how he found it, but I would guess he was running smatch...? --D > Linus
