INHERITANCE_CHANGED

Severity: warn

An EXTENDS clause was added, removed, or changed.

Why it matters. A new base brings new methods, possibly with different bodies than expected; removing one orphans super references. The check makes the change loud.

Settings. No check-specific config.

Trigger.

FUNCTION_BLOCK FB_Derived EXTENDS FB_OldBase     (* before *)
FUNCTION_BLOCK FB_Derived EXTENDS FB_NewBase     (* after, fires *)

The bot posts.

🟧 warn  INHERITANCE_CHANGED
FB_Derived EXTENDS clause changed: FB_OldBase → FB_NewBase
Derived behavior may have changed. Verify that the new base provides
the expected methods and that overrides still align.

Fix. Walk every overridden method to make sure it still applies to the new base. Smoke-test on a representative input.