VMS Help CC, Messages, MIXVLAALLOCAV  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        Using both __ALLOCA and variable-length arrays in the
                same function is not allowed on this platform.  The
                first call to __ALLOCA is at <where>.

 Description    Because they place different requirements on stack
                allocation on VAX systems, __ALLOCA and
                variable-length arrays cannot be used in the same
                function.

 User Action    Recode the function to use either variable-length
                arrays or __ALLOCA.