LANG.STRUCT.NOELSE : Missing Final else

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An if statement has one or more else if clauses, but does not have a final else clause.

Class Name

Missing Final else

Significance

style

Mnemonic

LANG.STRUCT.NOELSE

Categories

MisraC2023	MisraC2023:15.7	All if ... else if constructs shall be terminated with an else statement
Misra2012	Misra2012:15.7	All if ... else if constructs shall be terminated with an else statement
Misra2004	Misra2004:14.10	All if . else if constructs shall be terminated with an else clause
AUTOSARC++14	AUTOSARC++14:M6-4-2	All if ... else if constructs shall be terminated with an else clause.
MisraC++2008	MisraC++2008:6-4-2	All if ... else if constructs shall be terminated with an else clause.
MisraC++2023	MisraC++2023:9.4.1	All if ... else if constructs shall be terminated with an else statement
JSF++	JSF++:192	All if, else if constructs will contain either a final else clause or a comment indicating why a final else clause is not necessary.

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="Missing Final else"

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

int lang_struct_noelse(int i, int j){
    if (i==0)
        return 1;
    else if (i < 0) /* 'Missing Final Else' warning issued here */
        return 5;

    if (j==0)
        return 1;               /* ok: no ELSE IF clauses */

    return 6;
}

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

LANG.STRUCT.NOELSE : Missing Final else

Summary

Properties

Example

Relevant Configuration File Parameters