Unicorn with delicious cookie
Nous utilisons des cookies pour améliorer votre expérience de navigation. En savoir plus
Accepter
to the top
>
>
>
V1020. Function exited without...
menu mobile close menu
Additional information
toggle menu Contents

V1020. Function exited without performing epilogue actions. It is possible that there is an error.

09 Jui 2018

The analyzer has detected a function body that contains a block of code starting and ending with calls to functions with opposite names, while the code between these calls contains a condition causing the function under analysis to return without calling the epilogue function.

Consider the following example:

int pthread_cond_destroy(pthread_cond_t * cond)
{ 
  EnterCriticalSection(&ptw32_cond_list_lock);
  /* ... */  
  if (sem_wait (&(cv->semBlockLock)) != 0)
  {
    return errno; // <= V1020 Warning
  }
  /* ... */
  LeaveCriticalSection(&ptw32_cond_list_lock);
  return 0;
}

There are the calls to 'EnterCriticalSection' and 'LeaveCriticalSection' with the opposite words 'Enter' and 'Leave' at the beginning and end of the function body. The code in between contains a return statement with a missing call to 'LeaveCriticalSection' before it. This is what the fixed code should look like:

int pthread_cond_destroy(pthread_cond_t * cond)
{ 
  EnterCriticalSection(&ptw32_cond_list_lock);
  /* ... */  
  if (sem_wait (&(cv->semBlockLock)) != 0)
  {
    LeaveCriticalSection(&ptw32_cond_list_lock);
    return errno; 
  }
  /* ... */
  LeaveCriticalSection(&ptw32_cond_list_lock);
  return 0;
}

This diagnostic is classified as:

You can look at examples of errors detected by the V1020 diagnostic.