Synopsis

(Required) The operand of the sizeof operator shall not contain any expression which has potential side effects

Enabled by default

Yes

Severity/Certainty

High/Medium

Full description

The operand of the sizeof operator contains an expression that has potential side effects.

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++;
}