Synopsis

(Required) NULL shall not be thrown explicitly.

Enabled by default

Yes

Severity/Certainty

Medium/Medium

Full description

Throw of NULL integer constant. This check is identical to THROW-null.

Coding standards

This check does not correspond to any coding standard rules.

Code examples

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

#include <stdlib.h>

void example(void)
{
  try {
    throw ( NULL );          // Non-compliant
  }
  catch ( int i ) {      // NULL exception handled here
    // ...
  }
  catch ( const char * ) { // Developer may expect it to be caught here
    // ...
  }
}

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

#include <stdlib.h>

void example(void)
{
  char * p = NULL;
  try {
    throw ( p );             // Compliant
  }
  catch ( int i ) {
    // ...
  }
  catch ( const char * ) { // Exception handled here
    // ...
  }
}