Synopsis

(Required) A function shall have a single point of exit at the end of the function.

Enabled by default

Yes

Severity/Certainty

Low/Medium

Full description

One or more functions have multiple exit points or an exit point that is not at the end of the function. This check is identical to MISRAC2004-14.7, MISRAC2012-Rule-15.5.

Coding standards

Code examples

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

extern int errno;

void example(void) {
	if (errno) {
		return;
	}
	return;
}

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

extern int errno;

void example(void) {
	if (errno) {
		goto end;
	}
end:
	{
		return;
	}
}