Informix Error -4009: Non-shared member "name" cannot be used in default values.

Cause and resolution

Non-shared member "name" cannot be used in default values.

A default value expression in this function declaration refers to the value of a normal member variable of this class. This action is not supported. Default value expressions can refer to variables, but they must be declared at the module level or be shared members of classes.

Oninit® Troubleshooting Guidance

Reasons / Common Causes

-4009 fires when a function's default value expression refers to a normal (non-shared) member variable of its class — per the official guidance, default value expressions can only refer to module-level variables or shared class members.

A default value expression referencing a normal (non-SHARED) member variable, per the official guidance — the direct, only cause.

Solutions / Resolution

Use only module-level variables or shared class members in default value expressions, per the official guidance.

Examples

A default value referencing a normal member

CLASS Order
  DEFINE tax_rate DECIMAL

  FUNCTION compute(rate DECIMAL DEFAULT tax_rate)
    -- -4009: tax_rate is a normal member, not SHARED
  END FUNCTION
END CLASS

Corrected

CLASS Order
  DEFINE SHARED tax_rate DECIMAL

  FUNCTION compute(rate DECIMAL DEFAULT tax_rate)
    ...
  END FUNCTION
END CLASS

Diagnostic Checks

Check any member variable referenced in a default value expression, and confirm it's declared SHARED or is a module-level variable.

Related Errors / Related Topics

No closely related error codes are cross-referenced for -4009 in this set yet.

A default value expression refers to a normal (non-SHARED) member variable — use a module-level variable or a SHARED member instead.