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

Request our prices
New License
License Renewal
--Select currency--
USD
EUR
GBP
RUB
* By clicking this button you agree to our Privacy Policy statement

Free PVS-Studio license for Microsoft MVP specialists
* By clicking this button you agree to our Privacy Policy statement

To get the licence for your open-source project, please fill out this form
* By clicking this button you agree to our Privacy Policy statement

I am interested to try it on the platforms:
* By clicking this button you agree to our Privacy Policy statement

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.

>
>
>
V793. It is suspicious that the result …
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
OWASP errors (C#)
Additional information
Contents

V793. It is suspicious that the result of the statement is a part of the condition. Perhaps, this statement should have been compared with something else.

Jun 01 2017

The analyzer has detected a possible typo in a logical expression: an arithmetic operation acts as a condition.

Consider the following example:

int a;
int b;
if (a + b) {}

Although the behavior of this code might be clear to its author, it is better to use explicit checks. Its result is the same as that of the expression 'a + b != 0'. Those who will read and maintain it will be wondering if there is a missing comparison of the sum with some value. Perhaps it was to be compared with some constant, say, 42, and then the correct code should look like this:

if (a + b == 42) {}

The next example is taken from a real application:

// verify that time is well formed
if ( ( hh / 24 ) || ( mm / 60 ) ) {
  return false;
}

This code works as intended, but it would have looked much clearer if the author had used comparison operations.

// verify that time is well formed
if ( hh >= 24 || mm >= 60 ) {
  return false;
}

This diagnostic is classified as:

You can look at examples of errors detected by the V793 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