Missing configuration for template variable

A template variable was left unconfigured.

Erroneous code example:

VAR_CONFIG
    main.foo.bar AT %IX1.0 : BOOL;
END_VAR

PROGRAM main
    VAR
        foo : foo_fb;
    END_VAR
END_PROGRAM

FUNCTION_BLOCK foo_fb
    VAR
        bar AT %I* : BOOL;
        qux AT %I* : BOOL;
    END_VAR
END_FUNCTION_BLOCK

In this example a variable named main.foo.qux is declared as a template, however the VAR_CONFIG-block does not contain an address-configuration for it. Each template variable needs to be configured, otherwise it could lead to segmentation faults at runtime.