To get a trial key
fill out the form below
Team License (standard version)
Enterprise License (extended version)
* By clicking this button you agree to our Privacy Policy statement

** This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Request our prices
New License
License Renewal
--Select currency--
USD
EUR
GBP
RUB
* By clicking this button you agree to our Privacy Policy statement

** This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Message submitted.

Your message has been sent. We will email you at


If you haven't received our response, please do the following:
check your Spam/Junk folder and click the "Not Spam" button for our message.
This way, you won't miss messages from our team in the future.

>
>
>
V516. Consider inspecting an odd expres…
Analyzer Diagnostics
General Analysis (C++)
General Analysis (C#)
General Analysis (Java)
Diagnosis of micro-optimizations (C++)
Diagnosis of 64-bit errors (Viva64, C++)
MISRA errors
AUTOSAR errors
Additional information
Contents

V516. Consider inspecting an odd expression. Non-null function pointer is compared to null.

May 30, 2012

Code contains a construct comparing a non-null pointer to a function with null. It is most probably that there is a misprint in code – parentheses are missing.

Consider this example:

int Foo();
void Use()
{
  if (Foo == 0)
  {
    //...
  }
}

The condition "Foo == 0" is meaningless. The address of the 'Foo' function never equals zero, so the comparison result will always be 'false'. In the code we consider, the programmer missed parentheses by accident. This is the correct version of the code:

if (Foo() == 0)
{
  //...
}

If there is an explicit taking of address, the code is considered correct. For example:

int Foo();
void Use()
{
  if (&Foo != NULL)
    //...
}

This diagnostic is classified as:

You can look at examples of errors detected by the V516 diagnostic.

This website uses cookies and other technology to provide you a more personalized experience. By continuing the view of our web-pages you accept the terms of using these files. If you don't want your personal data to be processed, please, leave this site.
Learn More →
Accept