A dangling pointer is a pointer to an AREA which no longer contains valid data.

In the unique-id scheme to detect dangling pointers, physical OIDsmay contain a unique identifier which is an integer that distinguishes the OID from the IDENTIFIERS of other objects that happened to be STORED at the same location EARLIER, and were DELETED or moved elsewhere. The unique identifier is also stored with the object, and the identifiers in an OID and the corresponding object should match. If the unique identifier in a physical OID does not match the unique identifier in the object to which that OID points, the system detects that the pointer is a dangling pointer, and signals an error.

A dangling pointer is a pointer to an area which no longer contains valid data.

In the unique-id scheme to detect dangling pointers, physical OIDsmay contain a unique identifier which is an integer that distinguishes the OID from the identifiers of other objects that happened to be stored at the same location earlier, and were deleted or moved elsewhere. The unique identifier is also stored with the object, and the identifiers in an OID and the corresponding object should match. If the unique identifier in a physical OID does not match the unique identifier in the object to which that OID points, the system detects that the pointer is a dangling pointer, and signals an error.