[$] Improvements to GCC's -fanalyzer option

For the second year in a row, the GNU Tools Cauldron (the annual gatheringof GNU toolchain developers) has been held as a dedicated track at theonline Linux PlumbersConference. For the 2021 event, that track started with a talk byDavid Malcolm on his work with the GCC -fanalyzer option, whichprovides access to a number of static-analysis features. Quite a bit hasbeen happening with -fanalyzer and more is on the way with theupcoming GCC 12 release, including, possibly, a set of checks thathave already found at least one vulnerability in the kernel.