Undefined labelDRT-W1455

The analyzer produces this diagnostic when it finds a reference to a label that isn't defined in the scope of the break or continue statement that is referencing it.

Example

The following code produces this diagnostic because the label loop isn't defined anywhere:

void f() {
  for (int i = 0; i < 10; i++) {
    for (int j = 0; j < 10; j++) {
      if (j != 0) {
        break loop;
      }
    }
  }
}

Common fixes

If the label should be on the innermost enclosing do, for, switch, or while statement, then remove the label:

void f() {
  for (int i = 0; i < 10; i++) {
    for (int j = 0; j < 10; j++) {
      if (j != 0) {
        break;
      }
    }
  }
}

If the label should be on some other statement, then add the label:

void f() {
  loop: for (int i = 0; i < 10; i++) {
    for (int j = 0; j < 10; j++) {
      if (j != 0) {
        break loop;
      }
    }
  }
}