Synopsis

(Required) For any iteration statement, there shall be at most one break statement used for loop termination.

Enabled by default

Yes

Severity/Certainty

Low/Medium

Full description

Multiple termination points were found in a loop.

Coding standards

Code examples

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

int test1(int);
int test2(int);

void example(void)
{
	int i = 0;
	for (i = 0; i < 10; i++) {
		if (test1(i)) {
			break;
		} else if (test2(i)) {
			break;
		}
	}
}
void func()
{
  int x = 1;
  for ( int i = 0; i < 10; i++ )
  {
    if ( x )
    {
      break;
    }
    else if ( i )
    {
      break;  // Non-compliant – second jump from loop
    }
    else
    {
      // Code
    }
  }
}

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

void example(void)
{
	int i = 0;
	for (i = 0; i < 10 && i != 9; i++) {
		if (i == 9) {
			break;
		}
	}
}
void func()
{
  int x = 1;
  for ( int i = 0; i < 10; i++ )
  {
    if ( x )
    {
      break;
    }
    else if ( i )
    {
      while ( true )
      {
        if ( x )
        {
          break;
        }
        do
        {
          break;
        }
        while(true);
      }
    }
    else
    {
    }
  }
}