How to get more useful chain of reasoning from scan-build?

Many times when I run scan-build on my code, it reports out something like:

assimp/code/BoostWorkaround/boost/shared_ptr.hpp:135:13: warning: Called C++ object pointer is null
                ctr = ptr?r.ctr->incref():NULL;

You can get that with scan-view. Look at the last few lines of your
build, it should tell you the exact command to use (at least mine
does). I hope I am not overlooking something as I am myself fairly new
to clang ... but really like it.