NESTEDCOMMENT

Message        Opening comment delimiter found inside a delimited
               comment; a previous comment may be missing its
               closing delimiter.

Description    C comments delimited by /* */ do not nest.  When /*
               is encountered inside a delimited comment it usually
               means that the previous comment is missing its
               terminating */ or that the user has ill-advisedly
               attempted to "comment out" a section of code that
               contains a delimited comment.

User Action    It is traditional in C to use #if 0 to conditionalize
               out large sections of code.  You may also want to
               consider //-style comments if the compiler modes you
               care about recognize them.