Check usage of restricted variable names

Check ID: mathworks.maab.na_0019

Guideline: na_0019: Restricted variable names

• MAB v6.0

Description

Check for use of reserved keywords in MATLAB Function block variable names.

Identifies variable names in MATLAB Function blocks that conflict with reserved C and C++ keywords.

Note

Reserved MATLAB^® words include the following:

• Built-in functions: builtin

• Functions in the MATLAB path: Functions List

• Reserved Keywords (Embedded Coder)

• nil

• nan

• inf

• infinity

Avoid using variable names that conflict with MATLAB Functions, such as conv.

This check is case insensitive. For example, the check flags keywords true, True, TRUE, and tRue.

This check requires a Simulink^® Check™ license.

Check Parameterization

This check does not include sub-checks because the MAB modeling guideline provides only one sub ID.

For reference, the MAB guideline sub ID(s) that are recommended for use by the NA-MAAB modeling standards organizations are:

• NA-MAAB — a

You can use Model Advisor Configuration Editor to configure this check to include files with a .m extension in the analysis. To enable this feature, in the Input Parameters section, select Check external .m files referenced in the model.

Results and Recommended Actions

Condition	Recommended Action
Variable name conflicts with reserved keyword.	Consider using a different variable name that does not conflict with the reserved keywords.

Capabilities and Limitations

• Runs on library models.

• Analyzes content of library-linked blocks. By default, the input parameter Follow links is set to on.

• Analyzes content in masked subsystems. By default, the input parameter Look under masks is set to graphical.