I've done some investigation into the build warnings generated by the Ubuntu and Windows buildbots. I thought I'd highlight some of the "big offenders" so that if anyone has good ideas on how to fix them, it may lead to thinning the forest out enough that we can see trees (and the raw number of warnings wouldn't be that alarming). I don't have counts for the number of errors, but trust me, it's probably at least 100 for the issues noted.
Ubuntu:
1. GPOINTER_TO_UINT (and family).
Windows:
1. C files generated by flex/bison. I know these have always been troublesome for code-analysis tools, so perhaps they should be put in a "don't check these" list.
2. qpixelformat.h (Qt library). VS Code Analysis would prefer to use compiler directives #if instead of "if" when comparing what presume to be #define constants (similar changes have been done in the Wireshark source). Not sure if such a fix is worthy of fixing and pushing upstream, but it would clear a lot out.