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Why you should care

[/vc_column_text][vc_column_text]Switch can contain a default clause for various reasons: to handle unexpected values, to show that all the cases were properly considered.

For code readability purpose, to help a developer to quickly find the default behavior of a switch statement, it is recommended to put the default clause at the end of the switch statement. This rule raises an issue if the default clause is not the last one of the switch’s cases.[/vc_column_text][vc_empty_space][/vc_column_inner][/vc_row_inner][vc_empty_space height=”12px”][vc_empty_space][vc_separator][vc_column_text]

How we detect

[/vc_column_text][vc_column_text]CAST Highlight counts one occurrence each time the default clause of a switch in not in last position.

Bad Code 

switch (param) {
default: // default clause should be the last one
error();
break;
case 0:
doSomething();
break;
case 1:
doSomethingElse();
break;
}

Good Code 

switch (param) {
case 0:
doSomething();
break;
case 1:
doSomethingElse();
break;
default:
error();
break;
}

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References

[/vc_column_text][vc_column_text]MISRA C++:2008, 6-4-6 – The final clause of a switch statement shall be the default-clause
MISRA C:2012, 16.5 – A default label shall appear as either the first or the last switch label of a switch statement[/vc_column_text][vc_empty_space][vc_row_inner][vc_column_inner][vc_single_image image=”5362″ img_size=”full”][vc_column_text]

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