ADDRCONSTEXT

Message        <Context> "<name>" does not have a constant address,
               but occurs in a context that requires an address
               constant.  This is an extension of the language.

Description    The C89 standard requires that an initializer for a
               pointer-type member of an automatic aggregate or
               union-type object have an initializer that is an
               address constant.  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.