VMS Help CC, Messages, RESTRICTEXT1  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        Placement of the __restrict qualifier within the
                array-bound specifier of a formal parameter
                declaration is a language extension.

 Description    The use of the restrict type qualifier within the
                array bound specifier of a formal parameter is a
                language extension supported by Compaq C.  Other C
                compilers might not successfully compile a program
                that uses this extension.

 User Action    Be aware of this if you wish to port the program.