On 2016.11.03 at 14:47 +0100, Jakub Jelinek wrote: > On Thu, Nov 03, 2016 at 02:35:57PM +0100, Markus Trippelsdorf wrote: > > I don't have gathered detailed statistics. But for example a simple > > /* drop through */ in a package header file will of course cause many > > bogus warnings during the build on level 2. > > For the Linux kernel false positives decrease ~20% when switching from > > level 3 to 1. > > One would have to count only warnings with unique locus (i.e. sort -u them > after grepping them from logs). > But even with 20%, if one spends the energy to analyze the 80%, where > one actually has to analyze the code, just mechanically changing a couple of > common comment kinds into more standardized one isn't going to be > significant.
I should have written: For the Linux kernel the number of warnings dropped by 20% (going from level 3 to 1) and all of them turned out to be false positives. And yes, I have used "sort -u". I'm not sure if I would call 20% insignificant. -- Markus
