Synopsis

(Required) Evaluation of the operand to the sizeof operator shall not contain side effects.

Enabled by default

Yes

Severity/Certainty

Medium/Medium

Full description

There are sizeof expressions that contain side effects. This check is identical to SIZEOF-side-effect, MISRAC2004-12.3.

Coding standards

Code examples

The following code example fails the check and will give a warning:

void example(void) {
	int i;
	int size = sizeof(i++);
}

The following code example passes the check and will not give a warning about this issue:

void example(void) {
	int i;
	int size = sizeof(i);
	i++;
}