LANG.STRUCT.UUTYPE : Unused Type

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A typedef statement defines a type that is not used anywhere in the scope of the typedef.

Class Name

Unused Type

Significance

style

Mnemonic

LANG.STRUCT.UUTYPE

Categories

MisraC2023	MisraC2023:2.3	A project should not contain unused type declarations
Misra2012	Misra2012:2.3	A project should not contain unused type declarations
AUTOSARC++14	AUTOSARC++14:A0-1-6	There should be no unused type declarations.
MisraC++2008	MisraC++2008:0-1-5	A project shall not contain unused type declarations.
MisraC++2023	MisraC++2023:0.2.3	Types with limited visibility should be used at least once
CWE	CWE:561	Dead Code
CERT-C	CERT-C:MSC12-C	Detect and remove code that has no effect or is never executed
DISA-3r10	DISA-3r10:V-6149	The designer will ensure the application does not contain source code that is never invoked during operation, except for software components and libraries from approved third-party products.

Availability

Available for C and C++.

Enabling

Checks for this warning class are disabled by default. To enable them, add the following WARNING_FILTER rule to the project configuration file.

WARNING_FILTER += allow class="Unused Type"

Suppose the analyzed project has a single source file, fileA.c.

typedef int type1;  /* 'Unused Type' warning issued here */   
typedef int type2;                              /* used as return type of f() */  

type2 f(void) {return 5;}

The following configuration file parameters affect checks for this warning class.

LANG.STRUCT.UUTYPE : Unused Type

Summary

Properties

Example

Relevant Configuration File Parameters