dev.c : Warning - dereference of null pointer, clang --analyze

[Marek Otahal <markotahal@gmail.com>]

Hi list, 
I was just building util-linux with clang to see how it's static code analysis works. 
Here's what I got so far, I'm not sure about it's correctness, so excuse me if it's stupid. 

 CC       dev.lo
clang: warning: unknown warning option '-Wmissing-parameter-type'; did you mean '-Wmissing-prototypes'?
clang: warning: unknown warning option '-Wunused-but-set-parameter'; did you mean '-Wunused-parameter'?
clang: warning: unknown warning option '-Wunused-but-set-variable'; did you mean '-Wunused-variable'?
dev.c:91:16: warning: Access to field 'next' results in a dereference of a null pointer
      (loaded from variable 'p')
        list_for_each(p, &dev->bid_tags) {
        ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~
../../include/list.h:179:48: note: expanded from macro 'list_for_each'
        for (pos = (head)->next; pos != (head); pos = pos->next)
                                                      ^
1 warning generated.

Best regards, Mark 
-- 

Marek Otahal :o)