On 25/06/2018 18:47, Nick Desaulniers wrote: > Here's an actual bug this warning caught applied to drivers/input/: > > dae1a432ab1f ("Input: mousedev - fix implicit conversion warning"): > https://patchwork.kernel.org/patch/9753771/ > How does the warning catch a bug there? While I do prefer the code after the patch, wouldn't everything work just fine with "signed char ps2[6]". So it seems to me in that case (unlike KVM) the warning caught some ugly code, but not a bug. (In fact if there was a bug, it should have been mentioned in the commit message, but it wasn't). Paolo