Informix Error -4036: Function "name" cannot be redefined in a derived class "class" with different scope of reference.

Reasons / Common Causes

-4036 fires when a derived class redefines an inherited function with a different SHARED status than its base class declared — per the official guidance, either the base class's function is SHARED and the redefinition isn't, or vice versa.

1. A redefined function's SHARED status doesn't match its base-class declaration, per the official guidance — the direct, only cause.

Solutions / Resolution

1. Match the redefined function's SHARED status to its base-class declaration.

Examples

A mismatched SHARED status on override

CLASS Base
  FUNCTION SHARED nextId()
    ...
  END FUNCTION
END CLASS

CLASS Derived DERIVED FROM Base
  FUNCTION nextId()
    -- -4036: Base declares nextId() SHARED, this redefinition isn't
  END FUNCTION
END CLASS

Corrected

CLASS Derived DERIVED FROM Base
  FUNCTION SHARED nextId()
    ...
  END FUNCTION
END CLASS

Diagnostic Checks

1. Check the base class's SHARED status for the function being redefined, and match it in the derived class.

Related Errors / Related Topics

• -4035 — "Function "name" cannot be redefined in a derived class "class" with different access permissions." A related function-redefinition error, about mismatched access permission rather than mismatched SHAREDness.

A redefined function's SHARED status doesn't match its base class's declaration — make them match.