pTAL Reference Manual (G06.24+, H06.09+, J06.03+)

previous-identifier

is the identifier of a simple variable, array, substructure, or pointer previously declared in the

same structure. You cannot specify an index with this identifier.

In a redefinition, the new item and the previous (nonpointer) item both must have a byte address

or both must have a word address. If the previous item is a pointer, the data it points to must be

word addressed or byte addressed to match the new item.

Example 94 (page 154) redefines the left byte of int_var as string_var.

Example 94 Simple Variable Redefinition

STRUCT .mystruct;

BEGIN

INT int_var;

STRING string_var = int_var; ! Redefinition

END;

Array

An array redefinition associates a new array with a previous item at the same BEGIN-END level

of a structure.

type

is any data type except UNSIGNED.

identifier

is the identifier of the new array.

range

lower-bound

is an INT constant expression (in the range -32,768 through 32,767) that specifies the

index (relative to the zeroth element) of the first array element you want allocated.

upper-bound