extended_errorcheck

Controls the issuing of warning messages for possible unintended logical errors.

#pragma extended_errorcheck on | off | reset

If you enable this pragma, the compiler generates a warning message (not an error) if it encounters some common programming errors:

It also issues a warning message when it encounters a delete operator for a class or structure that has not been defined yet. The listing below shows an example.

#pragma extended_errorcheck on
struct X;
int func(X *xp)
{
     delete xp;    // Warning: deleting incomplete type X
}

• An integer or floating-point value assigned to an enum type. The listing below shows an example.
  Listing 2. Assigning to an Enumerated Type

enum Day { Sunday, Monday, Tuesday, Wednesday, 
           Thursday, Friday, Saturday } d;

d = 5; /* WARNING */
d = Monday; /* OK */
d = (Day)3; /* OK */

• An empty return statement in a function that is not declared void . For example, a non-void function with an empty return statement, listed below, results in a warning message.
  Listing 3. A non-void function with an empty return statement

int MyInit(void)
{
  int err = GetMyResources();
  if (err != -1)
  {
    err = GetMoreResources();
  }
  return; /* WARNING: empty return statement */
}

A non-void function with a proper return statement, listed below, shows how to prevent this warning message.

int MyInit(void)
{
  int err = GetMyResources();
  if (err != -1)
  {
    err = GetMoreResources();
  }
  return err; /* OK */
}

By default, this setting is off .