-zchar

Specifies that the default alignment attribute for various data types is unaligned.

The Open PL/I default for data type alignment is aligned. -zchar sets the following data types to unaligned:

CHAR
CHAR VAR
GRAPHIC
GRAPHIC VAR
WIDECHAR
WIDECHAR VAR
PICTURE

In addition, -zchar affects storage requirements for CHAR VAR , GRAPHIC VAR, and WIDECHAR VAR. It also affects parameter and descriptor matching at CALL statements.

Example

Open PL/I default:

Dcl c  char;
Dcl sub entry (char unaligned);

    Call sub(c);  /* A dummy argument is created for “c” */

Dcl c  char;
Dcl sub entry (char aligned);

Call sub(c);  /* “c” is passed by reference */

Example (-zchar)

Dcl c  char;
Dcl sub entry (char unaligned);

    Call sub(c);  /* “c” is passed by reference */

Dcl c  char;
Dcl sub entry (char aligned);

Call sub(c);  /* A dummy argument is created for “c”  */