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  1.  Home
  2. RPG400-L
  3. March 2011

Pointer usage danger?

Given this code:

D Array1 DS Dim( 10 )
D Field1 2a
D Field2 75a

D Array2 DS Dim( %Elem( Array1 ))
D Based( Array1Ptr ) Inz( %Addr( Array1 ))
D Field1a Like( Field1 )
D Field2a Like( Field2 )

D Array1Ptr s *

/Free
Array1Ptr = %Addr( Array1( 10 )) ;
...

At this point, the first element of Array2 should be positioned over the last element (#10) of Array1. Assuming I don't attempt to access element 2 in Array2, is this safe to do or will the shift of Array2, elements 2-10, overlay memory it shouldn't?

-mark

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