PARSE.UNDECLPARAM : Undeclared Parameter

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CodeSonar^® 9.2p0

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CodeSecure Inc

C and C++

PARSE.UNDECLPARAM : Undeclared Parameter

Summary

A defining function declaration does not specify the type for one or more of the function parameters.

This class is a strict subset of Incomplete Function Prototype.

For a nondefining function declaration that does not specify types for all parameters, see Parameter Identifier List Needs Function Definition.

This warning class is derived from a C/C++ parser warning.

Properties

Class Name

Undeclared Parameter

Significance

style

Mnemonic

PARSE.UNDECLPARAM

Categories

MisraC2025	MisraC2025:8.1	Types shall be explicitly specified
MisraC2023	MisraC2023:8.1	Types shall be explicitly specified
Misra2012	Misra2012:8.1	Types shall be explicitly specified
Misra2004	Misra2004:8.2	Whenever an object or function is declared or defined, its type shall be explicitly stated
CERT-C	CERT-C:DCL07-C	Include the appropriate type information in function declarators

Availability

Available for C and C++.

Enabling

Checks for this warning class are enabled by default. However, warning instances of this class that are issued as parser errors (rather than parser warnings) will be discarded when using factory configuration settings. To prevent these instances from being discarded, add the following WARNING_FILTER rule to the project configuration file.

WARNING_FILTER += allow class="Undeclared Parameter"

To disable checks for this warning class, add the following WARNING_FILTER rule to the project configuration file.

WARNING_FILTER += discard class="Undeclared Parameter"

Example

void f(x) int x; {}                       /* Types specified for all parameters
                                           * ('Incomplete Function Prototype' warning issued here,
                                           *  because non-prototype function declarator is used)
                                           */

void g(x,y) int x; {}  /* 'Undeclared Parameter' warning issued here
                        * - type for parameter y is not specified
                        * ('Incomplete Function Prototype' warning also issued)
                        */

void h(int x){}                           /* Types specified for all parameters. */

void i(x);                                /* Nondefining function declaration.
                                           * ('Parameter Identifier List Needs Function Definition'
                                           *  and 'Incomplete Function Prototype' warnings issued here)
                                           */

Relevant Configuration File Parameters

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

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