After declaring a MEMPTR variable, you must initialize it before you can use it. In general, to initialize a MEMPTR variable, you use the SET-SIZE statement to allocate a region of memory and associate it with the variable.

Note: You can also allocate the memory region for a MEMPTR variable using a shared library routine. In this case, you must still use the SET-SIZE statement to initialize the size of the returned memory region in ABL.