Informix Error -4055: Overriding the constructor of a base class is not allowed.

Cause and resolution

Overriding the constructor of a base class is not allowed.

This FUNCTION declaration in a CLASS statement specifies a function whose name is the same as the name of a base of this class. In other words, you are trying to override the constructor function of a base class. This action is not permitted. Review the names of members that are inherited by this class, and choose unique names for its member functions.

Oninit® Troubleshooting Guidance

Reasons / Common Causes

-4055 fires when a class declares a FUNCTION whose name matches one of its base classes — per the official guidance, this amounts to trying to override the base class's constructor function, which isn't permitted.

A member function named the same as one of the class's base classes, per the official guidance — the direct, only cause.

Solutions / Resolution

Review the names of members inherited by this class, per the official guidance.
Choose unique names for its member functions, per the official guidance.

Examples

A member function named after a base class

CLASS Order DERIVED FROM Base
  FUNCTION Base()
    -- -4055: this collides with Base's own constructor name
  END FUNCTION
END CLASS

Corrected

CLASS Order DERIVED FROM Base
  FUNCTION initialize()
    ...
  END FUNCTION
END CLASS

Diagnostic Checks

Check every member function's name against all base class names, and rename any that collide.

Related Errors / Related Topics

-4033 — "Base member name "name" cannot be used for class name." A related naming-collision error, about a class's own name colliding with an inherited member, rather than a member function colliding with a base class's name.

A member function is named the same as a base class, effectively trying to override its constructor — rename the function.