LANG.STRUCT.UUPARAM : Unused Parameter

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A function parameter is not used in the body of the function.

Class Name

Unused Parameter

Significance

style

Mnemonic

LANG.STRUCT.UUPARAM

Categories

MisraC2023	MisraC2023:2.7	A function should not contain unused parameters
Misra2012	Misra2012:2.7	A function should not contain unused parameters
AUTOSARC++14	AUTOSARC++14:M0-1-2	A project shall not contain infeasible paths.
	AUTOSARC++14:A0-1-4	There shall be no unused named parameters in non-virtual functions.
	AUTOSARC++14:A0-1-5	There shall be no unused named parameters in the set of parameters for a virtual function and all the functions that override it.
MisraC++2008	MisraC++2008:0-1-2	A project shall not contain infeasible paths.
	MisraC++2008:0-1-11	There shall be no unused parameters (named or unnamed) in non-virtual functions.
	MisraC++2008:0-1-12	There shall be no unused parameters (named or unnamed) in the set of parameters for a virtual function and all the functions that override it.
MisraC++2023	MisraC++2023:0.2.2	Any named function parameter shall 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 Parameter"

int lang_struct_uuparam(
        int param1,                            /* used in body */
        int param2,                            /* used in body (though use is unreachable) */
        int param3)   /* 'Unused Parameter' warning issued here */
{
    int loc1 = param1;
    if (0) {
      loc1 += param2;              /* ('Unreachable Computation' warning issued here) */
    }
    return loc1;
}

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

LANG.STRUCT.UUPARAM : Unused Parameter

Summary

Properties

Example

Relevant Configuration File Parameters