Only the case I mentioned above, where we have something like:

<pre>
case BLAH1:
case BLAH2:
     some_code();
     break;
</pre>

In this case it's clear that falling through is intentional. However, it's not clear when it's like this:
<pre>
case BLAH1:
     some_code();
case BLAH2:
     some_code();
     break;
</pre>

See the first part of the Coverity post.