LANG.STRUCT.DECL.FNEST : Nested Function Declaration

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CodeSonar^® 9.2p0

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C and C++

LANG.STRUCT.DECL.FNEST : Nested Function Declaration

Summary

A function declaration occurs inside a function definition.

Properties

Class Name

Nested Function Declaration

Significance

style

Mnemonic

LANG.STRUCT.DECL.FNEST

Categories

Misra2004	Misra2004:8.6	Functions shall be declared at file scope
AUTOSARC++14	AUTOSARC++14:M3-1-2	Functions shall not be declared at block scope.
MisraC++2008	MisraC++2008:3-1-2	Functions shall not be declared at block scope.
MisraC++2023	MisraC++2023:6.0.1	Block scope declarations shall not be visually ambiguous
CWE	CWE:710	Improper Adherence to Coding Standards
CERT-CPP	CERT-CPP:DCL53-CPP	Do not write syntactically ambiguous declarations
JSF++	JSF++:107	Functions shall always be declared at file scope.

Availability

Available for C and C++.

Enabling

Checks for this warning class are disabled by default, and require the unnormalized C ASTs for the project. To enable them, add the following WARNING_FILTER rule and RETAIN_UNNORMALIZED_C_AST specification to the project configuration file.

RETAIN_UNNORMALIZED_C_AST = Yes
WARNING_FILTER += allow class="Nested Function Declaration"

Note that retaining the unnormalized ASTs will increase the disk space used to store the project representation, and may make the analysis take longer.

Example

int lang_struct_decl_fnest(int i){
    int g(int x); /* 'Nested Function Declaration' warning issued here */
    return g(i);
}

Relevant Configuration File Parameters

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

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