how accurate or helpful is scan-build-16 in clang-16 in identifying bugs / issues in code at build time ?

Folks, 

Im just wondering what other porters experience of  scan-build  for the projects that you are maintaining ?  

has it been useful in identifying bugs?... or is the analysis engine too basic  or shallow to properly analyse code ? 

are there particular types of bugs it is good at identifying without false positives ? 

are there particular types of bugs  that it identifies that are probably a waste of time ?

any advice on using scan-build-16 with ports would be appreciated...

Thanks 

Tom Smyth 

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Kindest regards,
Tom Smyth.