c-langelem-2nd-pos is a compiled Lisp function in `cc-defs.el'.

(c-langelem-2nd-pos LANGELEM)

Return the secondary position in LANGELEM, or nil if there is none.

LANGELEM is typically a syntactic element on the "new" form as used
in `c-syntactic-element'. It may also be a cons cell as passed in the
first argument to lineup functions, but then the returned value always
will be nil.