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

OVERFLOW_TRAPS
enables overflow traps for a subprocedure.
NOOVERFLOW_TRAPS
disables overflow traps for a subprocedure.
parameter-spec
specifies the parameter type of a formal parameter and whether it is a value or reference
parameter, as described in Formal Parameter Specification (page 251).
subproc-body
is a BEGIN-END block that contains sublocal declarations and statements—see Subprocedure
Body (page 259).
FORWARD
means the subprocedure body is declared later in this procedure.
Subprocedure Body
A subprocedure body can contain sublocal declarations and statements.
sublocal-decl
is a declaration for one of:
• simple variable
• array (direct or read-only)
• structure (direct only)
• simple pointer
• structure pointer
• equivalenced variable
• LITERAL
• DEFINE
• label
• entry point
statement
is any statement described in Chapter 12 (page 199).
In subprocedures, declare pointers and directly addressed variables only. Here are examples:
ExampleSublocal Variable
INT var;Simple variable (always direct)
INT array[0:5];Direct array
INT ro_array = 'P' := [0,1,2,3,4,5];Read-only array
INT var;Simple variable (always direct)
Subprocedure Body 259